-------------+--------------------------------------------+--------------------- | FFFFFF OOOOOO SSS | STScI | FF OO OO SS | STAN - FOS Analysis | FFFF OO OO SS | Number 7 News | FF OO OO SS | August 1995 | FF OOOOOO SSS | -------------+--------------------------------------------+--------------------- CONTENTS: - FOS NEWS - RECENT FOS PREPRINTS - APPENDIX: FOS CONTACTS ================================================================================ FOS NEWS -------- by Jeffrey Hayes The FOS continues to function nominally. Over the last month we have had 8 GO/GTO proposals execute, along with 4 calibration programs. The Cycle 6 FOS Instrument Handbook has been distributed and PostScript version will be posted on STEIS soon. Paper copies can be requested at help@stsci.edu M. Dahlem is in the process of revising and editing the FOS section of the post-COSTAR version of the HST Data Handbook. The final version is due out in the early fall of this year. FOS Advisory ------------ We are advising all current and potential users of the G160L on the FOS/BLUE side taking science data through the SINGLE apertures to use the UPPER of the equivalent PAIRed apertures (ie if one is doing science in the 0.5 aperture, to move it to the UPPER of the 0.5-PAIR). This is in order to avoid a nasty ``blemish'' on the photo-cathode that occurs at 1500-1550 A --- just about where [C IV] is found. T. Keyes at the Calibration Workshop showed that the ``blemish'' is quite substantial (~30%). Needless to say, this is very disconcerting, and extremely misleading to the unwary. We recommend that all Cycle 6 proposals using the G160L through the FOS/BLUE be executed through the equivalent PAIRed aperture, using STEP-PATT=SINGLE. We will endeavor to change all Cycle 5 proposals that are using SINGLE apertures, to UPPER PAIRed apertures if they have not already been executed. New Insrtument Science Reports ------------------------------ CAL/FOS 136 ``Post-COSTAR FOS Aperture transmissions for point sources'' by R. Bohlin and L. Colina CAL/FOS 137 ``SMOV Report VI -- FOS aperture alignments I -- Large Apertures'' by I. Evans et al. CAL/FOS 138 ``SMOV Report VII -- FOS aperture alignments II -- Small Apertures and adopted alignments'' by I. Evans et al. CAL/FOS 139 ``SMOV Report VIII -- The A1 -- ACQ -- INT ACQ -- ACQ/BINARY Alignment'' by I. Evans et al. CAL/FOS 140 ``Post-COSTAR FOS "small" aperture relative throughputs derived from SMOV data'' by I. Evans CAL/FOS 141 ``FOS Diode height'' by I. Evans CAL/FOS 142 ``Repeatability of the FOS G130H grating external wavelength zeropoint'' by A. Koratkar and I. Evans CAL/FOS 145 ``FOS Filter-Grating Wheel Repeatability'' by A. Koratkar y S. Martin These documents will be on-line soon in the FOS document page. Paper copies can be requested at help@stsci.edu ================================================================================ RECENT FOS PREPRINTS -------------------- We draw your attention to these papers, based on FOS data, that will appear in the next few months. This list includes all preprints received by the STScI Library not yet published in the journals. Please remember to include our Library in your preprint distribution list. "HST imagery and spectroscopy of the IZw18 system" Dufour, R.J.; Shields, G.A.; Garnett, D.R.; Skillman, E.D. "On the nature of the outer rings around SN 1987A" Panagia, N.; Scuderi, S.; Gilmozzi, R.; Challis, P.M.; Garnavich, P.M.; Kirshner, R.P. Scuderi, S.; Panagia, N.; Gilmozzi, R.; Challis, P.M.; Kirshner, R.P. "Properties of star 2, one the SN 1987A companions, derived from HST-FOS observations" Shemansky, D.; Matheson, P. "The transmission function of the HST FOS" ================================================================================ APPENDIX: FOS contacts ----------------------- Any questions about the scheduling of your observations should be addressed to your Program coordinator. Post-Observation questions can be addressed to your Contact Scientist. If you do not know who these persons are, you can find the information in http://presto.stsci.edu/public/propinfo.html. Analysis, STSDAS or any other questions can also be addressed to help@stsci.edu ================================================================================ Comments, questions, requests for issues, additions or deletions to the mailing list, etc. can be e-mailed to help@stsci.edu ================================================================================ The Space Telescope Science Institute is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. ================================================================================