HUBBLE SPACE TELESCOPE DAILY REPORT #1613 PERIOD COVERED: 0000Z (UTC) 04/15/96 - 0000Z (UTC) 04/16/96 Daily Status Report as of 107/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Two Sets of WF/PC-2 6359 (Core Properties of the Bulges = of Spiral Galaxies) The WF/PC-2 was used to make snapshot survey observations of = spiral galaxy NGC-4102 in order to study its central bulge. The aim is = to investigate the core properties, correlations with global galactic = properties, and the frequency of occurrence of multiple and/or = miscentered nuclei. bThe observations were completed as scheduled, and no = anomalies were noted. 1.2 Completed Three Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration: = Dark) The WF/PC-2 was used to make internal dark calibration images. = The observations were completed as scheduled, and no problems were = reported. 1.3 Completed GHRS/2 6289 (High Resolution Spectroscopy with HST-Final = GTO Observations) The High Resolution Spectrograph (Side Two) was used to make high = resolution spectrographic observations of the star Epsilon Aurigae (aka, = HD82328). A wave length calibration image was also taken. The = observations were completed as planned, and no anomalies were reported. 1.4 Completed WF/PC-2 6364 (Snapshot Survey of Proto-Planetary Nebulae = and AGB Stars) The WF/PC-2 was used to make some snapshot survey observations of = protoplanetary nebular system IRAS02229 to study its circumstellar envelop= e. The purpose is to discern the evolutionary sequence that produces = axially-symmetric planetary nebulae. The observations were executed as = scheduled, and no anomalies were noted. 1.5 Completed FOS/BL 6489 (The Identification and Cooling of the White = Dwarf in WZ SGE Like Systems) The Faint Object Spectrograph (Blue Side) was used to make = spectrographic observations of the white dwarf nova in the AL Com system. = AL Com, like WZ Sge, has outburst recently and these outbursts are = usually separated by decades. Al Com went though an outburst in the = spring of 1995. The observations were completed as planned, and no = anomalies were reported. 1.6 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat) The WF/PC-2 was used to make Earth streak flat calibration images. = These streak flats will be used to produce flat fields, to map the OTA = illumination pattern and, in combination with other data, to produce new = superflats. The observations were completed as planned, and no problems = were reported. 1.7 Completed WF/PC-2 5972 (Determination of the Extragalactic = Distance Scale) The WF/PC-2 was used to make observations of the galaxy NGC-4414 = looking for standard candle Cepheid variable stars. The purpose of this = observations is to help estimate the Hubble constant with an accuracy of = 10%. The observations were executed as scheduled, and no anomalies were = noted. 1.8 Completed Two Sets of WF/PC-2 6363 (The Environments and Host = Galaxies of BL-Lac Objects) The WF/PC-2 was used to make snapshot survey observations of = BL-Lac object MS0950.9+4 in order to study its environment and its host = galaxies. The goal is to investigate systematic trends in host galaxy = type, unusual morphological features, nearby companion galaxies, etc. = The observations were executed as scheduled, and no anomalies were noted. 1.9 Completed GHRS/1/2 6245 (Abundances and Isotope Anomalies of Heavy = Elements in HR7775) The High Resolution Spectrograph (Both Sides One and Two) was used = to make observations of the Hg-Mn class star HD193452 (aka, HR7775) in = order to study the abundances and isotope anomalies of its heavy = elements. This star is known to exhibit unusual heavy element = abundances. The observations were completed as planned, and no problems = were reported. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 4 Successful : 4 Scheduled Reacquisitions : 11 Successful : 11 2.2 FHST Updates: Scheduled : 9 Successful : 9 2.3 Operations Notes: HST operations reported no problems for the last 24 hours. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time. /DMH