baalke@mars.jpl.nasa.gov (Ron Baalke) (01/17/90)
Voyager Mission Status Report
January 16, 1990
Voyager 1
The spacecraft collected routine cruise science data throughout
this period. A TLC test was performed on 1/1 and the X-band TWT
was switched to the high-power mode on 1/2. A high-rate UVS
observation of omicron Andromedae on 1/3 and playback of Uranus
photometric images on 1/4-5 were lost due to the continuing non-
availability of DSS 63 (failed elevation bearing).
On 1/2, the Bay 1 Heater was turned off and the X-Band TWT
commanded to the high power mode in preparation for Playback #6.
Activities for this period included the collection on low-rate UVS
data from the source omicron Andromedae, and low-rate F&P&W data
throughout the week.
A PRA POR occurred on 1/4. The FDS algorithm successfully
restored the PRA to its nominal configuration. This is the 35th
POR to occur since launch. The most recent previous occurrence
was on 8/7/89.
A total of 62:45 of tracking time (exclusive of overlaps) was
obtained. Of this, none was large-aperture coverage. While no
significant real-time telemetry outages were experienced, minor
losses amounted to 1:11 - 1.9% of the total scheduled support
time.
Voyager 2
Routine cruise science data were collected throughout this
period, although substantial amounts were lost or severely
degraded due to the spacecraft's passage through superior
conjunction. The minimum Sun-Earth-Probe angle (0.75 degrees)
was attained on 1/2.
The collection of low-rate F&P&W data continued throughout this
reporting period and two frames of PWS were recorded, one each on
12/21 and 12/27, for later playback. In addition, the scan-
platform was slewed to the target plate on 12/15 and the UVS read-
out mode was inhibited through 12/21. On 12/21 the read-out mode
was enabled for a successful readout. Shortly thereafter, the
read-out was inhibited again through 12/27 at which time the read-
out was enabled for a second successful read-out.
The Scan Platform was pointed to a UVS dark sky position. Data
were of poor quality from 1/1 through 1/3. This was not
unexpected, due to the low SEP angle of less than 2 degrees. There
was a PRA POR on 1/4.
A total of 75:45 of tracking time (exclusive of overlaps) was
obtained. Of this, 4:20 was large-aperture coverage.
Ron Baalke | baalke@mars.jpl.nasa.gov
Jet Propulsion Lab M/S 301-355 | baalke@jems.jpl.nasa.gov
4800 Oak Grove Dr. |
Pasadena, CA 91109 |wayne@csri.toronto.edu (Wayne Hayes) (01/17/90)
In article <2582@jato.Jpl.Nasa.Gov> baalke@mars.jpl.nasa.gov (Ron Baalke) writes: > > Voyager 1 > > A TLC test was performed on 1/1 and the X-band TWT ^^^ This can't be what I think it is, can it? A "Tender Loving Care" test? "You OK, darling? Comfy-cosy, warm, honey-buns?" >observation of omicron Andromedae on 1/3 and playback of Uranus >photometric images on 1/4-5 were lost due to the continuing non- When did Voyager ONE get images of Uranus? Or can it actually get useful info from half way across the solar system? (Well, ok not half way, but at least a few A.U.'s away.) -- The 'C' programming language is, at worst, the second best language for any given application. Usually, however, it is the best. -- anon Wayne Hayes INTERNET: wayne@csri.toronto.edu CompuServe: 72401,3525