! File: 4529C.PROP ! Database: PEPDB ! Date: 22-FEB-1994:16:21:35 coverpage: title_1: IMAGING OF NEAR-NUCLEAR PLASMA IN COMETS -CYC3 MEDIUM sci_cat: SOLAR SYSTEM sci_subcat: COMETS proposal_for: GO targ_of_opp: Y pi_fname: JOHN pi_mi: C. pi_lname: BRANDT pi_inst: UNIVERSITY OF COLORADO pi_country: USA hours_pri: 0.10 num_pri: 1 wf_pc: Y realtime: N time_crit: Y funds_length: 12 off_fname: LAURENCE off_mi: D. off_lname: NELSON off_title: DIRECTOR/OCG off_inst: UNIVERSITY OF COLORADO off_addr_1: OFFICE OF CONTRACTS AND GRANTS off_addr_2: 1511 UNIVERSITY AVENUE, ARMORY off_addr_3: CB 19, UNIVERSITY OF COLORADO off_city: BOULDER off_state: CO off_zip: 80309 off_country: USA off_phone: 303-492-2695 ! end of coverpage abstract: line_1: We propose to carry out high-resolution imagery of the near-nuclear line_2: regions of a comet for the purpose of determining the structure and line_3: evolution of the plasma. These images will determine the nature of line_4: the comet's interaction with the solar wind, show the morphology of line_5: the comet's magnetic field, provide a critical test of mechanisms for line_6: disconnection events (DE's), and assist in determining the important line_7: mechanism for ionizing molecules in comets. The interaction of the line_8: solar wind with comets -- capture of solar magnetic field lines, line_9: formation of the plasma tail, formation of rays, activity including line_10: disconnection events, ionization of molecules -- is widely believed line_11: to follow a standard paradigm. None of the features of the paradigm line_12: have been verified for nuclear distances less than 300 km or with line_13: spatial resolutions comparable to the expected dimension of fine line_14: structure. This dimension is the Larmor radius of water ions, for line_15: this case ~15 km. For a comet at 0.5 AU, the WF/PC image would be line_16: approximately 50,000 km on a side with a resolution of 37 km. Such line_17: an image would provide, by far, the most stringent test of our line_18: physical view of the comet/solar wind interaction. ! ! end of abstract general_form_proposers: lname: BRANDT fname: JOHN title: PI mi: C. inst: UNIVERSITY OF COLORADO country: USA ! lname: LARSON fname: STEPHEN mi: M. inst: UNIVERSITY OF ARIZONA country: USA ! lname: NIEDNER fname: MALCOLM mi: B. inst: GODDARD SPACE FLIGHT CENTER country: USA ! lname: RANDALL fname: CORA mi: E. inst: UNIVERSITY OF COLORADO country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: Paper copy only. ! question: 3 section: 1 line_1: We will acquire WFC images of a new comet using different filters. line_2: Our goal is to obtain temporal derivatives of the images in each line_3: of the filters. We will thus obtain multiple exposures with the line_4: same filter/exposure time combination, scheduling observations line_5: such that the time elapsed between identical exposures is on the line_6: order of 15 minutes. The exposure times and thus the scheduling line_7: strategy depend heavily on the predicted magnitude of the comet. line_8: Below we have outlined strategies for predicted magnitudes of 4,5, line_9: 6,7,8,9 with typical gas/dust ratios. These strategies should line_10: suffice for uncertainties of about 1.5 mag. If the comet line_11: has an atypical dust/gas ratio, we must change the observing line_12: strategy. In any case, we require that the comet be brighter than line_13: magnitude 10. The time derivatives will be obtained from images line_14: using the F413M, F622W, F785LP and F368M WFC filters. These line_15: derivatives will enable us to study the structure in CO+, H2O+, line_16: Continuum, and CO2+, respectively. line_17: ------------------------------------------------------------------ line_18: With the 3.0 hours awarded to us, we will be able to utilize line_19: somewhat more than 3 HST orbits (assuming 52 minutes line_20: of unocculted observing time per orbit). Because the amount line_21: of time which elapses between WFC exposures is critical to line_22: the science which we have proposed, we have structured the line_23: current proposal according to HST orbit. The time elapsed ! question: 3 section: 2 line_1: between orbits should be such that all 4 orbits will be executed line_2: within 1 day. The time elapsed between separate exposures WITHIN an line_3: orbit is critical. If schedulers find it impossible to schedule line_4: this proposal as specified below, it will be necessary for us to line_5: revise our strategy. We emphasize that any deviation from the line_6: sequences of exposures defined below requires our input. With that line_7: intro, the exposure sequences are as follows (times in minutes): line_8: =================================================================== line_9: STRATEGY FOR PREDICTED MAGNITUDE 4 line_10: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_11: ------------------------------------------------------------------- line_12: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 line_13: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_14: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_15: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_16: 413M/7s 1 622W/1s 1 785LP/2s 1 413M/18s 1 line_17: Readout 1 Readout 1 Readout 1 Readout 1 line_18: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_19: 413M/40s 2 622W/4s 1 785LP/8s 1 785LP/4s 1 line_20: Readout 1 Readout 1 Readout 1 Readout 1 line_21: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_22: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_23: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 ! question: 3 section: 3 line_1: Strategy for magnitude 4 continued... line_2: 413M/7s 1 622W/1s 1 785LP/2s 1 413M/18s 1 line_3: Readout 1 Readout 1 Readout 1 Readout 1 line_4: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_5: 413M/40s 2 622W/4s 1 785LP/8s 1 785LP/4s 1 line_6: Readout 1 Readout 1 Readout 1 Readout 1 line_7: ----------------------------------PreFlash 3 PreFlash 3 line_8: ----------------------------------785LP/2s 1 413M/18s 1 line_9: ----------------------------------Readout 1 Readout 1 line_10: ----------------------------------------------------------------- line_11: TOTALS: 43.5 41.5 46.5 46.5 line_12: TOTAL for all orbits for magnitude 4 = 178 minutes line_13: ================================================================== line_14: STRATEGY FOR PREDICTED MAGNITUDE 5 line_15: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_16: ------------------------------------------------------------------- line_17: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 line_18: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_19: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_20: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_21: 413M/18s 1 622W/2s 1 785LP/4s 1 413M/40s 2 line_22: Readout 1 Readout 1 Readout 1 Readout 1 line_23: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 ! question: 3 section: 4 line_1: Strategy for magnitude 5 continued... line_2: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_3: 413M/80s 2 622W/10s 1 785LP/20s 1 785LP/10s 1 line_4: Readout 1 Readout 1 Readout 1 Readout 1 line_5: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_6: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_7: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_8: 413M/18s 1 622W/2s 1 785LP/4s 1 413M/40s 2 line_9: Readout 1 Readout 1 Readout 1 Readout 1 line_10: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_11: 413M/80s 2 622W/10s 1 785LP/20s 1 785LP/10s 1 line_12: Readout 1 Readout 1 Readout 1 Readout 1 line_13: ---------------------------------------------------PreFlash 3 line_14: ---------------------------------------------------413M/40s 2 line_15: ---------------------------------------------------Readout 1 line_16: ----------------------------------------------------------------- line_17: TOTALS: 43.5 41.5 41.5 49.5 line_18: TOTAL for all orbits for magnitude 5 = 176 minutes line_19: ================================================================== line_20: STRATEGY FOR PREDICTED MAGNITUDE 6 line_21: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_22: ------------------------------------------------------------------- line_23: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 ! question: 3 section: 5 line_1: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_2: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_3: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_4: 413M/40s 2 622W/4s 1 785LP/10s 1 413M/120s 2 line_5: Readout 1 Readout 1 Readout 1 Readout 1 line_6: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_7: 413M/230s 4 622W/26s 1 785LP/50s 2 785LP/26s 1 line_8: Readout 1 Readout 1 Readout 1 Readout 1 line_9: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_10: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_11: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_12: 413M/40s 2 622W/4s 1 785LP/10s 1 413M/120s 2 line_13: Readout 1 Readout 1 Readout 1 Readout 1 line_14: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_15: 413M/230s 4 622W/26s 1 785LP/50s 2 785LP/26s 1 line_16: Readout 1 Readout 1 Readout 1 Readout 1 line_17: ----------------------------------------------------------------- line_18: TOTALS: 49.5 41.5 43.5 43.5 line_19: TOTAL for all orbits for magnitude 6 = 178 minutes line_20: ================================================================== line_21: STRATEGY FOR PREDICTED MAGNITUDE 7 line_22: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_23: ------------------------------------------------------------------- ! question: 3 section: 6 line_1: Strategy for magnitude 7 continued... line_2: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 line_3: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_4: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_5: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_6: 622W/12s 1 413M/300s 6 413M/120s 2 622W/26s 1 line_7: Readout 1 Readout 1 Readout 1 Readout 1 line_8: PreFlash 3 ------------------- PreFlash 3 PreFlash 3 line_9: 622W/60s 2 ------------------- 785LP/60s 2 785LP/60s 2 line_10: Readout 1 ------------------- Readout 1 Readout 1 line_11: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_12: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_13: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_14: 622W/12s 1 413M/300s 6 413M/120s 2 622W/26s 1 line_15: Readout 1 Readout 1 Readout 1 Readout 1 line_16: PreFlash 3 ------------------- PreFlash 3 PreFlash 3 line_17: 622W/60s 2 ------------------- 785LP/60s 2 785LP/60s 2 line_18: Readout 1 ------------------- Readout 1 Readout 1 line_19: -------------------------------------------------- PreFlash 3 line_20: -------------------------------------------------- 622W/26s 1 line_21: -------------------------------------------------- Readout 1 line_22: ----------------------------------------------------------------- line_23: TOTALS: 43.5 41.5 45.5 48.5 ! question: 3 section: 7 line_1: TOTAL for all orbits for magnitude 7 = 179 minutes line_2: =================================================================== line_3: STRATEGY FOR PREDICTED MAGNITUDE 8 line_4: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_5: ------------------------------------------------------------------- line_6: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 line_7: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_8: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_9: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_10: 622W/26s 1 413M/500s 11 785LP/60s 2 622W/70s 2 line_11: Readout 1 Readout 1 Readout 1 Readout 1 line_12: PreFlash 3 ------------------- PreFlash 3 PreFlash 3 line_13: 622W/140s 3 ------------------- 785LP/260s 5 622W/70s 2 line_14: Readout 1 ------------------- Readout 1 Readout 1 line_15: Track 51 1.5 Track 51 1.5 Track 51 1.5 --------------- line_16: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 --------------- line_17: PreFlash 3 PreFlash 3 PreFlash 3 --------------- line_18: 622W/26s 1 413M/500s 11 785LP/60s 2 --------------- line_19: Readout 1 Readout 1 Readout 1 --------------- line_20: PreFlash 3 ------------------- PreFlash 3 --------------- line_21: 622W/140s 3 ------------------- 785LP/260s 5 --------------- line_22: Readout 1 ------------------- Readout 1 --------------- line_23: ------------------------------------------------------------------ ! question: 3 section: 8 line_1: TOTALS: 45.5 51.5 51.5 29 line_2: TOTAL for all orbits for magnitude 8 = 177.5 minutes line_3: =================================================================== line_4: STRATEGY FOR PREDICTED MAGNITUDE 9 line_5: ORBIT_1 TIME ORBIT_2 TIME ORBIT_3 TIME ORBIT_4 TIME line_6: ------------------------------------------------------------------- line_7: GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 GS Acq 12.5 line_8: Track 51 1.5 Track 51 1.5 Track 51 1.5 Track 51 1.5 line_9: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 line_10: PreFlash 3 PreFlash 3 PreFlash 3 PreFlash 3 line_11: 622W/70s 2 413M/500s 11 785LP/350s 7 622W/300s 6 line_12: Readout 1 Readout 1 Readout 1 Readout 1 line_13: PreFlash 3 ------------------- ---------------- PreFlash 3 line_14: 622W/180s 3 ------------------- ---------------- 622W/300s 6 line_15: Readout 1 ------------------- ---------------- Readout 1 line_16: Track 51 1.5 Track 51 1.5 Track 51 1.5 --------------- line_17: WFPC Algn 3 WFPC Algn 3 WFPC Algn 3 --------------- line_18: PreFlash 3 PreFlash 3 PreFlash 3 --------------- line_19: 622W/70s 2 413M/500s 11 785LP/350s 7 --------------- line_20: Readout 1 Readout 1 Readout 1 --------------- line_21: PreFlash 3 ------------------- ---------------- --------------- line_22: 622W/180s 3 ------------------- ---------------- --------------- line_23: Readout 1 ------------------- ---------------- --------------- ! question: 3 section: 9 line_1: TOTALS: 47.5 51.5 43.5 37 line_2: TOTAL for all orbits for magnitude 9 = 179.5 minutes. line_3: =================================================================== line_4: We have specified Guide Tol=1". This assumes that we initially line_5: acquire guide stars in coarse mode, and shift to gyros when the line_6: comet moves such that the guide stars move out of the FGS field of line_7: view. With a gyro drift of .002"/s, this corresponds to an line_8: "on-gyro" time of 500s; and about 700km smearing on a comet at line_9: 1 AU. ! question: 4 section: 1 line_1: The consistent spatial resolutions of about 0.1 arc sec over time line_2: required for this investigation are only available from HST. (We line_3: will be observing simultaneously from the ground at different line_4: resolutions). The capability of 0.1 arc sec for a comet at 0.5 AU line_5: distance translates to a resolution of about 37 km. This approaches line_6: the smallest expected level of detail (the Larmor radius for 20 AMU line_7: ions (T=10^4 K and B=50 gamma) is about 15 km) and is almost a line_8: factor of 10 better than available from the ground. Observations line_9: with HST offer the only opportunity to document the near-nuclear line_10: region (say, 5e4 km) at a resolution of 37 km, and the only line_11: opportunity to probe the innermost region. ! question: 5 section: 1 line_1: This program requires a reasonably bright comet showing plasma line_2: emission and will be chosen by us by monitoring candidate comets, line_3: either periodic or new. For the unpredictable long period comet, line_4: we anticipate an interval of one month between determining that line_5: the comet is suitable and the time at which observations should line_6: begin. The interval would probably be longer for a periodic line_7: comet. ! question: 6 section: 1 line_1: The purpose of this proposal is to obtain temporal derivatives line_2: of WFC comet images. To do so, we need to acquire identical line_3: images with a time delay on the order of 15 minutes between them. line_4: This requires that the images be acquired in the same orbit. line_7: See also the answer to question 7 for more details on how the line_8: images will be analyzed. ! question: 7 section: 1 line_1: The purpose of the data reduction is to determine the morphology of line_2: the near-nuclear plasma in one or more molecules (eg., H2O+ and line_3: CO+). The reduction consists of two phases: (A) Deconvolution of line_4: the image using the best available point-spread function. One of line_5: us (JCB) has experience with this for the comet Levy program line_6: (Weaver, et al., 1992). As an independent check on the techniques line_7: used, a parallel reduction was carried out with the assistance of line_8: Dr. Eliot Malumuth of the GHRS team. We were able to verify the line_9: results. Note again that primarily we are after morphology; line_10: photometry will be crude. (B) Extraction of cometary ion line_11: features, if necessary. Shift-difference or temporal-difference line_12: techniques will be our primary approach. One of us (SML) has line_13: considerable experience with these techniques. Separation of the line_14: plasma structures from the continuum (dust) reflection and neutral line_15: gas emission could be approached in three generic ways: line_16: (1) Straight imagery (wavelength chosen for maximum contrast) with line_17: no other provision for continuum extraction might produce an image line_18: with sufficient contrast to identify the plasma structures. Such line_19: an approach might be successful for a comet with a low dust-to- line_20: gas ratio. (2) A speparate continuum image could be obtained for line_21: subtraction from the image containing plasma plus continuum. This line_22: approach can work effectively only if the two images can be line_23: aligned and if the continuum image is not contaminated with plasma ! question: 7 section: 2 line_1: emission. While this approach can be effective, we prefer to use line_2: primarily the following well-established (and more generally line_3: applicable) approach. (3) Shift-difference techniques have been line_4: used for years and are effective for our needs. This is a line_5: standard, time-proven technique with many published results. line_6: Basically, the latter technique works because the continuum line_7: emission varies slowly over distance (or time) while the plasma line_8: emission varies rapidly over distance (or time). Subtraction of line_9: a slightly-shifted image from an original involves subtraction of line_10: a continuum very nearly equal to the original (thus removing the line_11: continuum) and subtraction of a plasma emission very different line_12: from the original (thus emphasizing it). Because the same line_13: instrumenta configuration is used for both images, problems line_14: generally are minimal. Problems with shift-difference techniques line_15: could arise if they involve continuum images with dust structure. line_16: In this case, a pure continuum image would be needed. Therefore, line_17: we have adopted a hybrid strategy which uses shift-difference as line_18: the primary approach for efficiency and the straightforward line_19: continuum subtraction as the secondary approach for certainty. line_20: In addition, the capability to perform the image processing two line_21: independent ways provides a valuable check. The processed images line_22: will be analyzed for determination of detailed morphology, line_23: dynamics and comparison with the standard paradigm. These results ! question: 7 section: 3 line_1: will be placed in the context of the images (obtained by us) at line_2: intermediate and large scales. The solar wind conditions at the line_3: comet will also be determined. Thus, we expect that a sequence of line_4: HST images should lead to a major, detailed comparison of theory line_5: with observations, and a more complete physical understanding of line_6: near-nuclear plasma phenomena in comets. ! question: 8 section: 1 line_1: Coordinated observations: These will be carried out at facilities line_2: of the Lunar and Planetary Laboratory, University of Arizona and line_3: the Joint Observatory for Cometary Research (plus a mini-network). line_4: Our primary sites are under the control of Co-Is Larson and line_5: Niedner, and thus are available to support this investigation. line_6: These observations consist of several distinct phases: (1) line_7: Monitoring of candidate comets to verify if they are suitable for line_8: this program; (2) follow-up observations to accurately line_9: characterize the chosen comet; and (3) imaging observations at line_10: several different scales to cover the times of the HST images. ! question: 9 section: 1 line_1: 1184: "Ultraviolet Atlas of Bright Suitable Comet of line_2: Opportunity", PI=J.C. Brandt; not executed yet. line_3: SV1355: "Cross Calibration of the GHRS Low and Medium line_4: Resolution Gratings", not related to current proposal. line_5: DD Comet Levy: "Director's Discretionary Observations of Comet line_6: Levy", PI=H.A. Weaver. Two sets of images of Comet Levy using a line_7: filter dominated by continuum emission were acquired at times line_8: separated by 6.5 hours. all images were obtained with the WFPC, line_9: with a spatial resolution of about 78 km at the comet for these line_10: observations. The coma emission was clearly asymmetric, and was line_11: significantly brighter on the sunward hemisphere. Analysis of the line_12: spatial brightness distribution led to the conclusion that the line_13: emission was neither isotropic, nor typical of cometary jets line_14: such as those observed in Comet Halley. The appearance of dust line_15: arcs propagating through the coma indicated that the coma of line_16: Comet Levy was variable, in accordance with previous ground-based line_17: and IUE observations. line_18: GO 3582: "Ultraviolet Observations of Cometary Methanol", PI= line_19: C.E. Randall; not executed yet. line_20: Publication from DD program: "Inner Coma Imaging of Comet Levy line_21: (1990c) with the Hubble Space Telescope", H.A. Weaver, M.F. line_22: A'Hearn, P.D. Feldman, C. Arpigny, W.A. Baum, J.C. Brandt, R.M. line_23: Light and J.A. Westphal, Icarus, in press (1992). ! question: 10 section: 1 line_1: University of Colorado: Data analysis capabilities, student line_2: research assistants. Software facilities used in analyzing photos line_3: obtained in the IHW LSPN are available. We have just completed the line_4: IHW Atlas of Large-Scale Phenomena (Brandt, Niedner and Rahe, line_5: 1992), which contains astrometrically determined scales and line_6: orientations for over 750 images. We also have the duplicate line_7: archive for the IHW-LSPN. We have access to several VAX VMS line_8: computers, as well as PCs and image processors with the necessary line_9: software. line_10: University of Arizona: Image processing and data analysis line_11: capabilities. Groundbased data acquisition with a dedicated 0.5-m line_12: telescope conveniently located 7 km from campus. The permanently line_13: mounted 512x512 CCD has a fild of 13 arcmin with 2 arcsec pixels line_14: at the newtonian focus and reaches Cousins R-band magnitude 20.5 line_15: in two minutes. A quick changeover, low resolution spectrograph line_16: using the same CCD is currently being made, as well as digital line_17: position readouts and a small commercial CCD auto guider. This line_18: facility will be available whenever it is needed to help identify line_19: and characterize candidate comets for this proposal, as well as line_20: to provide simultaneous groundbased data for correlation with line_21: another spatial scale. line_22: NASA/GSFC: Image Processing, Digitization of Wide-field Plates, line_23: Data Analysis. GSFC possesses a pair of Perkin-Elmer PDSA ! question: 10 section: 2 line_1: microdensitometers, which can be used to digitize photographic line_2: plates coming in from the JOCR and from the mini-network. We can line_3: calculate astrometric plate solutions at the microdensitometer and line_4: write same to FITS headers accompanying the digital data files. line_5: Astrometric measurement and image enhancement is then acccomplished line_6: via Sun computers and standard astronomical data analysis packages line_7: (IRAF, IDL, etc.). We have extensive experience in both areas as a line_8: result of our participation in the LSPN of the IHW. line_9: Joint Observatory for Cometary Research, Mini-Network: JOCR would line_10: emphasize wide-field (8x10 deg Schmidt camera) photography of line_11: comets, combined with quasi-wide-field (2 deg) CCD imaging line_12: behind a 300-mm lens and various interference filters, including line_13: and H2O+ filter (at 6205 A). The CCD imaging could be particularly line_14: useful in constructing videos showing temporal plasma-tail line_15: evolution on the quasi-large-scale. The mini-network would utilize line_16: some of the more enthusiastic contributers to the LSPN of the IHW. line_17: Candidate institutions/individuals will be chosen at a later date; line_18: some half dozen sites are envisioned. ! !end of general form text general_form_address: lname: Brandt fname: John mi: C. category: PI inst: University of Colorado addr_1: Laboratory for Atmospheric and Space Physics addr_2: Campus Box 392 city: Boulder state: CO zip: 80309 country: USA phone: (303) 492-3215 ! ! end of general_form_address records ! No fixed target records found solar_system_targets: targnum: 1 name_1: COMET descr_1: COMET, NEW lev1_1: STD = COMET comment_1: ALL FLUX VALUES ARE SUBJECT TO comment_2: CHANGE UPON DISCOVERY OF NEW comment_3: COMET. V=TOTAL COMA MAGNITUDE. comment_4: V=5 GAVE FLUX OF 1E-26 comment_5: ERG/S/CM2/HZ FOR WFC F785LP comment_6: OBS OF COMET LEVY. FLUX UNITS comment_7: ARE ERG/CM2/S/A FOR V=6. comment_8: COMET SHOULD HAVE V MAG < 10. comment_9: S/N CALCULATIONS ASSUME ONLY comment_10: STATISTICAL NOISE. fluxnum_1: 1 fluxval_1: V=6 +/- 1 fluxnum_2: 2 fluxval_2: F-CONT(8900)=15 +/- 8 E-17 fluxnum_3: 3 fluxval_3: F-CONT(4100)=7 +/- 4 E-16 fluxnum_4: 4 fluxval_4: F-CONT(6100)=3 +/- 2 E-16 fluxnum_5: 5 fluxval_5: F-CONT(3700)=9 +/- 5 E-16 ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 10.000 sequence_1: DEF sequence_2: WFCIMAGE targname: # config: WFC opmode: IMAGE aperture: WFALL sp_element: # num_exp: 1 time_per_exp: 2.0S s_to_n: # fluxnum_1: # priority: 1 req_1: GUID TOL 1"; req_4: SELECT 1 OF 411-445 OR 511-545 req_5: OR 611-644 OR 711-745 OR 811-842 req_6: OR 911-942; COND IF M=4,5,6,7,8 OR 9 comment_1: X11-X14=ORBIT 1. comment_2: X21-X24=ORBIT 2. comment_3: X31-X35=ORBIT 3. comment_4: X41-X45=ORBIT 4. comment_5: XYZ: X = COMET MAGNITUDE, comment_6: Y=ORBIT, Z=LINE ! linenum: 411.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X3.5 s_to_n: 20 fluxnum_1: 3 req_1: SEQ 411-414 NON-INT; req_2: SEQ 411-445 WITHIN 1D; req_5: TARG OF OPP / 411-445; req_6: CYCLE 3 / 411-445; comment_1: 1ST SHORT (7S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 411-414=ORBIT 1 comment_4: PREDICTED MAG=4 ! linenum: 412.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 50 fluxnum_1: 3 comment_1: 1ST LONG (40S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 413.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X3.5 s_to_n: 20 fluxnum_1: 3 comment_1: 2ND SHORT (7S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 414.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 50 fluxnum_1: 3 comment_1: 2ND LONG (40S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1 ! linenum: 421.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X0.5 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 421-424 NON-INT comment_1: 1ST SHORT (1S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 421-424=ORBIT 2 comment_4: PREDICTED MAG=4 ! linenum: 422.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X2 s_to_n: 50 fluxnum_1: 4 comment_1: 1ST LONG (4S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 423.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X0.5 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (1S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 424.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X2 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (4S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2 ! linenum: 431.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X1 s_to_n: 20 fluxnum_1: 2 req_1: SEQ 431-435 NON-INT comment_1: 1ST SHORT (2S) EXPOSURE comment_2: WITH F785LP (CONTINUUM). comment_3: LINES 431-435=ORBIT 3 comment_4: PREDICTED MAG=4 ! linenum: 432.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X4 s_to_n: 50 fluxnum_1: 2 comment_1: 1ST LONG (8S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 433.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X1 s_to_n: 20 fluxnum_1: 2 comment_1: 2ND SHORT (2S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 434.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X4 s_to_n: 50 fluxnum_1: 2 comment_1: 2ND LONG (8S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 435.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X1 s_to_n: 20 fluxnum_1: 2 comment_1: 3RD SHORT (2S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 441.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X9 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 441-445 NON-INT comment_1: 1ST MEDIUM (18S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 441-445=ORBIT 4 comment_4: PREDICTED MAG=4 ! linenum: 442.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X2 s_to_n: 30 fluxnum_1: 2 comment_1: 1ST MEDIUM (4S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 443.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X9 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND MEDIUM (18S) EXPOSURE comment_2: WITH F413M (CO+) comment_3: IN ORBIT 4 ! linenum: 444.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X2 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MEDIUM (4S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 445.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X9 s_to_n: 30 fluxnum_1: 3 comment_1: 3RD MEDIUM (18S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: IN ORBIT 4. ! linenum: 511.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X9 s_to_n: 20 fluxnum_1: 3 req_1: SEQ 511-514 NON-INT; req_2: SEQ 511-545 WITHIN 1D; req_5: TARG OF OPP / 511-545; req_6: CYCLE 3 / 511-545; comment_1: 1ST SHORT (18S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 511-514=ORBIT 1. comment_4: PREDICTED MAG=5. ! linenum: 512.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X40 s_to_n: 50 fluxnum_1: 3 comment_1: 1ST LONG (80S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 513.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X9 s_to_n: 20 fluxnum_1: 3 comment_1: 2ND SHORT (18S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 514.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X40 s_to_n: 50 fluxnum_1: 3 comment_1: 2ND LONG (80S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1 ! linenum: 521.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X1 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 521-524 NON-INT comment_1: 1ST SHORT (2S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 521-524=ORBIT 2 comment_4: PREDICTED MAG=5 ! linenum: 522.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X5 s_to_n: 50 fluxnum_1: 4 comment_1: 1ST LONG (10S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 523.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X1 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (2S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 524.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X5 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (10S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2 ! linenum: 531.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X2 s_to_n: 20 fluxnum_1: 2 req_1: SEQ 531-534 NON-INT comment_1: 1ST SHORT (4S) EXPOSURE comment_2: WITH F785LP (CONTINUUM). comment_3: LINES 531-534=ORBIT 3 comment_4: PREDICTED MAG=5 ! linenum: 532.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X10 s_to_n: 50 fluxnum_1: 2 comment_1: 1ST LONG (20S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 533.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X2 s_to_n: 20 fluxnum_1: 2 comment_1: 2ND SHORT (4S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 534.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X10 s_to_n: 50 fluxnum_1: 2 comment_1: 2ND LONG (20S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 541.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 541-545 NON-INT comment_1: 1ST MEDIUM (40S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 541-545=ORBIT 4 comment_4: PREDICTED MAG=5 ! linenum: 542.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X5 s_to_n: 30 fluxnum_1: 2 comment_1: 1ST MEDIUM (10S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 543.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND MEDIUM (40S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 4. ! linenum: 544.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X5 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MEDIUM (10S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 545.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 30 fluxnum_1: 3 comment_1: 3RD MEDIUM (40S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 4. ! linenum: 611.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 20 fluxnum_1: 3 req_1: SEQ 611-614 NON-INT; req_2: SEQ 611-644 WITHIN 1D; req_5: TARG OF OPP / 611-644; req_6: CYCLE 3 / 611-644; comment_1: 1ST SHORT (40S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 611-614=ORBIT 1. comment_4: PREDICTED MAG=6. ! linenum: 612.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X115 s_to_n: 50 fluxnum_1: 3 comment_1: 1ST LONG (230S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 613.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X20 s_to_n: 20 fluxnum_1: 3 comment_1: 2ND SHORT (40S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1. ! linenum: 614.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X115 s_to_n: 50 fluxnum_1: 3 comment_1: 2ND LONG (230S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 1 ! linenum: 621.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X2 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 621-624 NON-INT comment_1: 1ST SHORT (4S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 621-624=ORBIT 2 comment_4: PREDICTED MAG=6 ! linenum: 622.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 50 fluxnum_1: 4 comment_1: 1ST LONG (26S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 623.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X2 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (4S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2. ! linenum: 624.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (26S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 2 ! linenum: 631.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X5 s_to_n: 20 fluxnum_1: 2 req_1: SEQ 631-634 NON-INT comment_1: 1ST SHORT (10S) EXPOSURE comment_2: WITH F785LP (CONTINUUM). comment_3: LINES 631-634=ORBIT 3 comment_4: PREDICTED MAG=6 ! linenum: 632.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X25 s_to_n: 50 fluxnum_1: 2 comment_1: 1ST LONG (50S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 633.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X5 s_to_n: 20 fluxnum_1: 2 comment_1: 2ND SHORT (10S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 634.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X25 s_to_n: 50 fluxnum_1: 2 comment_1: 2ND LONG (50S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 641.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X60 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 641-644 NON-INT comment_1: 1ST MEDIUM (120S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 641-644=ORBIT 4 comment_4: PREDICTED MAG=6 ! linenum: 642.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X13 s_to_n: 30 fluxnum_1: 2 comment_1: 1ST MEDIUM (26S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 643.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X60 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND MEDIUM (120S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 4. ! linenum: 644.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X13 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MEDIUM (26S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 711.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X6 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 711-714 NON-INT; req_2: SEQ 711-745 WITHIN 1D; req_5: TARG OF OPP / 711-745; req_6: CYCLE 3 / 711-745; comment_1: 1ST SHORT (12S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 711-714=ORBIT 1. comment_4: PREDICTED MAG=7. ! linenum: 712.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X30 s_to_n: 50 fluxnum_1: 4 comment_1: 1ST LONG (60S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 713.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X6 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (12S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 714.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X30 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (60S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1 ! linenum: 721.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X150 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 721-722 NON-INT comment_1: 1ST MED (300S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 721-722=ORBIT 2 comment_4: PREDICTED MAG=7 ! linenum: 722.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X150 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND MED (300S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 2. ! linenum: 731.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X60 s_to_n: 20 fluxnum_1: 3 req_1: SEQ 731-734 NON-INT comment_1: 1ST SHORT (120S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 731-734=ORBIT 3 comment_4: PREDICTED MAG=7 ! linenum: 732.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 30 fluxnum_1: 2 comment_1: 1ST MED (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 733.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X60 s_to_n: 20 fluxnum_1: 3 comment_1: 2ND SHORT (120S) EXPOSURE comment_2: WITH F413M (CO+) comment_3: IN ORBIT 3. ! linenum: 734.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MED (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 741.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 30 fluxnum_1: 4 req_1: SEQ 741-745 NON-INT comment_1: 1ST MEDIUM (26S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 741-745=ORBIT 4 comment_4: PREDICTED MAG=7 ! linenum: 742.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 30 fluxnum_1: 2 comment_1: 1ST MEDIUM (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 743.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 30 fluxnum_1: 4 comment_1: 2ND MEDIUM (26S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 4. ! linenum: 744.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MEDIUM (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 4. ! linenum: 745.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 30 fluxnum_1: 4 comment_1: 3RD MEDIUM (26S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 4. ! linenum: 811.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 811-814 NON-INT; req_2: SEQ 811-842 WITHIN 1D; req_5: TARG OF OPP / 811-842; req_6: CYCLE 3 / 811-842; comment_1: 1ST SHORT (26S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 811-814=ORBIT 1. comment_4: PREDICTED MAG=8. ! linenum: 812.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X70 s_to_n: 50 fluxnum_1: 4 comment_1: 1ST LONG (140S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 813.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X13 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (26S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 814.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X70 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (140S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1 ! linenum: 821.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X250 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 821-822 NON-INT comment_1: 1ST MED (500S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 821-822=ORBIT 2 comment_4: PREDICTED MAG=8 ! linenum: 822.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X250 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND MED (500S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 2. ! linenum: 831.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 20 fluxnum_1: 2 req_1: SEQ 831-834 NON-INT comment_1: 1ST SHORT (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM). comment_3: LINES 831-834=ORBIT 3 comment_4: PREDICTED MAG=8 ! linenum: 832.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X130 s_to_n: 50 fluxnum_1: 2 comment_1: 1ST LONG (260S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 833.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X30 s_to_n: 20 fluxnum_1: 2 comment_1: 2ND SHORT (60S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 834.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X130 s_to_n: 50 fluxnum_1: 2 comment_1: 2ND LONG (260S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 841.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X35 s_to_n: 30 fluxnum_1: 4 req_1: SEQ 841-842 NON-INT comment_1: 1ST MED (70S) EXPOSURE comment_2: WITH F622W (H2O+) comment_3: LINES 841-842=ORBIT 4 comment_4: PREDICTED MAG=8 ! linenum: 842.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X35 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MED (70S) EXPOSURE comment_2: WITH F622W (H2O+) comment_3: IN ORBIT 4. ! linenum: 911.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X35 s_to_n: 20 fluxnum_1: 4 req_1: SEQ 911-914 NON-INT; req_2: SEQ 911-942 WITHIN 1D; req_5: TARG OF OPP / 911-942; req_6: CYCLE 3 / 911-942; comment_1: 1ST SHORT (70S) EXPOSURE comment_2: WITH F622W (H2O+). comment_3: LINES 911-914=ORBIT 1. comment_4: PREDICTED MAG=9. ! linenum: 912.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X90 s_to_n: 30 fluxnum_1: 4 comment_1: 1ST MED (180S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 913.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X35 s_to_n: 20 fluxnum_1: 4 comment_1: 2ND SHORT (70S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1. ! linenum: 914.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X90 s_to_n: 30 fluxnum_1: 4 comment_1: 2ND MED (180S) EXPOSURE comment_2: WITH F622W (H2O+) IN comment_3: ORBIT 1 ! linenum: 921.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X250 s_to_n: 30 fluxnum_1: 3 req_1: SEQ 921-922 NON-INT comment_1: 1ST SHORT (500S) EXPOSURE comment_2: WITH F413M (CO+). comment_3: LINES 921-922=ORBIT 2 comment_4: PREDICTED MAG=9 ! linenum: 922.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F413M time_per_exp: X250 s_to_n: 30 fluxnum_1: 3 comment_1: 2ND SHORT (500S) EXPOSURE comment_2: WITH F413M (CO+) IN comment_3: ORBIT 2. ! linenum: 931.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X175 s_to_n: 30 fluxnum_1: 2 req_1: SEQ 931-932 NON-INT comment_1: 1ST MED (350S) EXPOSURE comment_2: WITH F785LP (CONTINUUM). comment_3: LINES 931-932=ORBIT 3 comment_4: PREDICTED MAG=9 ! linenum: 932.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F785LP time_per_exp: X175 s_to_n: 30 fluxnum_1: 2 comment_1: 2ND MED (350S) EXPOSURE comment_2: WITH F785LP (CONTINUUM) comment_3: IN ORBIT 3. ! linenum: 941.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X150 s_to_n: 50 fluxnum_1: 4 req_1: SEQ 941-942 NON-INT comment_1: 1ST LONG (300S) EXPOSURE comment_2: WITH F600W (H2O+). comment_3: LINES 941-942=ORBIT 4 comment_4: PREDICTED MAG=9 ! linenum: 942.000 sequence_1: USE sequence_2: WFCIMAGE targname: COMET sp_element: F622W time_per_exp: X150 s_to_n: 50 fluxnum_1: 4 comment_1: 2ND LONG (300S) EXPOSURE comment_2: WITH F622W (H2O+) comment_3: IN ORBIT 4. ! ! end of exposure logsheet ! No scan data records found