! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 5812,v 1.1 1994/12/14 19:40:07 pepsa Exp $ ! ! Refer to the HST Phase II Proposal Instructions to fill this out ! ! Anything after a "!" is ignored, and may be deleted ! ! All keywords with multiple entries are comma delimited except the ! Visit_Requirements and Special_Requirements keywords which can be ! delimited with carriage returns or semi-colons, but not commas ! ! For help call your Program Coordinator: n/a ! Phone: n/a , E-mail: n/a ! ! This partially completed template was generated from a Phase I proposal. ! Name of Phase I Proposal: szalay-566.prop ! Date generated: Wed Dec 14 14:39:58 EST 1994 ! Proposal_Information ! Section 4 Title: Fluctuations in the Extragalactic Background Light Proposal_Category: AR Scientific_Category: Galaxies & Clusters Cycle: 5 Investigators PI_name: Alexander Szalay PI_Institution: Johns Hopkins University CoI_Name: Michael Vogeley CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) CoI_Name: Andrew Connolly CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) CoI_Name: Thomas Broadhurst CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to apply statistical analyses to archival WFPC2 images in order to obtain important new constraints on the physical nature and clustering of the extragalactic background light (EBL). Fluctuations in the EBL contain a wealth of information about the evolution and clustering of the population of faint galaxies and cosmology. Deep CCD images obtained by Tyson and others reveal a population of faint blue objects which may compromise a significant fraction of the EBL, but their nature is poorly understood. The integrated flux from galaxies to B=27 accounts for only 1/10 to 1/4 of the upper limits on the optical EBL. Multi-band deep WFPC2 images obtained as part of several programs are of the requisite quality to examine the properties of the light not assigned with high significance to discrete sources. At a redshift z~ 0.5, each WFPC2 field yields a 0.5h^-1 Mpc scale glimpse of the universe. If the EBL is clustered as strongly as the detected faint galaxies, the fluctuations will be strong enough to be detected; a null result would likewise be a significant discovery. Questions ! Free format text (please update) Observing_Description: Real_Time_Justification: Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: Target_Name: Alternate_Names: Description: Position: ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: ! Include at least V and B-V Comments: Solar_System_Targets ! Section 5.2 Target_Number: Target_Name: Description: Level_1: ! Satellite of Sun Level_2: ! Satellite of Level_1 Level_3: ! Satellite of Level_2 Window: Flux: ! Include at least V and B-V Comments: Generic_Targets ! Section 5.3 Target_Number: Target_Name: Description: Criteria: Flux: Comments: Scan_Data ! Appendix B Scan_Number: FGS_Scan: Cont_or_Dwell: Dwell_Points: Dwell_Secs: Scan_Width: Scan_Length: Sides_Angle: Number_Lines: Scan_Rate: First_Line_PA: Scan_Frame: Length_Offset: Width_Offset: ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: Visit_Requirements: ! Section 7.1 ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling ! PCS MODE [Fine | Gyro] ! GUIDing TOLerance ! ORIENTation TO ! ORIENTation TO FROM ! ORIENTation TO FROM NOMINAL ! SAME ORIENTation AS ! CVZ ! PARallel ! AFTER [BY [TO ]] ! AFTER ! BEFORE ! BETWEEN AND ! GROUP WITHIN