Hubble Space Telescope Daily Report #2688 08/17/00
HUBBLE SPACE TELESCOPE
DAILY REPORT #2688
PERIOD COVERED: 0000Z (UTC) 08/16/00 – 0000Z (UTC) 08/17/00
Daily Status Report as of 230/0000Z
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
1.1 Completed STIS/CCD 8439 (Bias Monitor-Part 2 C8)
The Space Telescope Imaging Spectrograph (CCD) was used to monitor the bias in the 1×1, 1×2, 2×1, and 2×2 bin settings at gain=1, and 1×1 at gain = 4, to build up high-S/N superbiases and track the evolution of hot columns. The proposal completed with no reported problems.
1.2 Completed Two Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8)
The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks. The proposal completed nominally.
1.3 Completed Three Sets of STIS/CCD 8852 (Measurement of CCD Window Ghost in Spectrographic Mode (Ghosties and Ghoulies That Go Bump in the Night))
The Space Telescope Imaging Spectrograph (CCD) was used to observe the Orion Nebula at its brightest point in Balmer Alpha using the G750M grating set at 6768A. We use the 0.2X0.2 aperture to define a small source in the slit plane. Several deep short-slit wavecals to be carried out in Earth occultation are also included in order to make an explicit comparison of externals and internals. It has been determined that two sets of faint ghosts are caused by a window in front of the CCD detector. The ghost position and shape has been modeled for direct imagery and for
spectrographic mode. We are able to predict the amplitude and shapes of the ghosts reasonably well for the G430L and G750L modes. The situation is different with M mode ghosts. These appear significantly different from the L mode ghosts in prelaunch laboratory data. The proposal completed nominallly.
1.4 Completed Two Sets of WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive Proposal Continuation)
The WF/PC-2 was used to perform a generic target version of the WFPC2 Archival Pure Parallel program. The program will be used to take parallel images of random areas of the sky, following the recommendations of the Parallels Working. The proposal completed with no reported problems.
1.5 Completed WF/PC-2/STIS/CCD 8642 (Completed Deep Imaging of the Probable Einstein Ring 1517+656)
The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) was used to obtain a deep STIS/CCD + F28X50LP image to map the detailed structure of the arcs, and WFPC2 F555W and F814W images to measure their colors. A short WFPC2 F702W snapshot image of the BL Lac object 1517+656, taken earlier, has revealed three surrounding arcs, subsequently confirmed by a longer NOT observation, making this a probable new Einstein ring. The observations completed with no reported problems.
1.6 Completed WF/PC-2 8602 (A Snapshot Survey of the Sites of Recent, Nearby Supernovae)
The WF/PC-2 was used to conduct a snapshot survey in V and I of the sites of the nearby SNe, which have precisely known positions, to obtain high-resolution information on their local environment. The proposal completed with no reported problems.
1.7 Completed WF/PC-2 8632 (A UV Atlas of Nearby Galaxies)
The WF/PC-2 was used to perform a snapshot survey of local galaxies at UV wavelengths with the F300W filter. The aim of the project is to build a reference UV Atlas of normal galaxies, whose optical images are well known, with the highest possible degree of information, covering all the morphological types and luminosity classes. The proposal completed normally.
1.8 Completed STIS/CCD 8631 (Bright Quasar Close Lensing Search II)
The Space Telescope Imaging Spectrograph (CCD) was used to expand the Cycle 8 second generation HST snapshot survey of bright quasars, optimized to find lenses with component image separations < 1". The observations completed nominally.
1.9 Completed STIS/CCD/MA1 8219 (A Definitive Census of the Cataclysmic Variable Population in 47 Tuc)
The Space Telescope Imaging Spectrograph (CCD and MA1) was used to make deep, far-ultraviolet, time-resolved observations of the cataclysmic variable population in the globular cluster 47 Tuc (a.k.a., NGC-104). A wavelength calibration image was also taken. The observations were executed as scheduled, and no anomalies were noted.
1.10 Completed WF/PC-2 8059 (POMS Test Proposal: Targeted Parallel Archive Proposal)
The WF/PC-2 was used to observe the parallel opportunities available in the neighborhood of bright galaxies are treated in a slightly different way from the normal pure parallels. Local Group galaxies offer the opportunity for a closer look at young stellar
populations. Narrow-band images in F656N can be used both to identify young stars via their emission lines, and to map the gas distribution in star-forming regions. The observations completed nominally.
1.11 Completed WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)
The WF/PC-2 was used to perform a T dark calibration program that obtains three dark frames every day in order to provide data for monitoring and characterizing the evolution of hot pixels. There were no reported anomalies.
2.0 FLIGHT OPERATIONS SUMMARY:
2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 7
Successful: 7
Scheduled Re-acquisitions: 10
Successful: 10
2.2 FHST Updates:
Scheduled: 17
Successful: 17
2.3 Operations Notes:
Using ROP SR-1A, the SSR EDAC error counter was cleared four times.
While remaining on CCS string "B" for the entire time, the operations team returned to the GSFC MOR at 229/1745Z and moved again to the Science Institute at 230/0930Z.
The engineering status buffer limits were modified at 229/1758Z per ROP DF-18A.
The SSA transmitter was turned on and off at 22=30/0301Z per ROP IC-2.
3.0 SIGNIFICANT FORTHCOMING EVENTS:
Continuation of normal science observations and calibrations.
