gsh7w@astsun.astro.Virginia.EDU (Greg Hennessy) (12/10/90)
ASTRO continues in routine observatons. Last night's shift had all instruments getting lots of sucessful acquisitions, and WUPPE made three long observations of its primary targets, the last instrument to acquire its primary observations. Last shift there were 256 minutes of scientific observations scheduled (a test of the engines called a RCS Hotfire took up about 3 hours of the shift) and obtainded 186 minutes, for a 72 percent. This is about as good as we are going to get, since I include a chard of the hops that the commands go through. The objcts observed included NGC 1851, M13, SS-Cyg, N49A+B, the Perseus cluster, Abell 665, HD37903, HD25443, and G70D8247. The current chart looks like Shift Scheduled Obtained Percentage Notes 6 345 54 17 7 418 163 38 Startracker patched 8 429 189 44 9 428 247 57 10 36 8 4 2nd DDU died 11 343 187 55 12 397 200 50 13 350 181 51 14 371 216 58 15 256 186 72 There is still no decision on the length of the mission. If it is only a 9 day mission, observing will stop in about 12 hours. IPS contingency Pointing Servo Loop ------- ------- ------------------ | IPS |<-----| MPC |<-----| APS |<------- ------- ------- | HAND-BRAIN-EAR | | | ------------------ | V | -------- | | AST | | | IMCS | | -------- | | | v ----------- ------------ | SHUTTLE | | SPACELAB | ----------- ------------ ^ | | v --------- ----------- | TDRSS | | SHUTTLE | ---------- ----------- ^ | | V -------- --------- | WSGS | | TDRSS | -------- --------- ^ | | V ---------- -------- | DOMSAT | | WSGS | ---------- -------- ^ | | V -------- ---------- | GSFC | | DOMSAT | -------- ---------- ^ | | V ---------- -------- | DOMSAT | | GSFC | ---------- -------- ^ | | V ------- -------- | JSC | | POCC | ------- -------- ^ | | V ---------- ------- | DOMSAT | | SOA | ---------- ------- ^ | | V | -------- ---------- ------------------- -------- | IMCS | | POCC | | APS | | | | STRIP|->| VIDEO |->| EYE-BRAIN-VOICE |------->| POCC | | CHART| | MATRIX | | | | | -------- ---------- ------------------- -------- -- -Greg Hennessy, University of Virginia USPS Mail: Astronomy Department, Charlottesville, VA 22903-2475 USA Internet: gsh7w@virginia.edu UUCP: ...!uunet!virginia!gsh7w