Fig 1. The above figure is a histogram of the gaps in the 32kbps telemetry from the GRO spacecraft. The peak at 2600 sec corresponds to a typical GRO slew manuever duration. There are also a small number of much longer slew manuevers in the 4000-8000 sec duration. While the s/c is slewing the 32kbps telemetry is turned off (only the 1kbps TM is running).
Fig 2. The above figure is an expanded portion of the short duration range of the main histogram in Figure 1. It shows a strong peak at ~120 seconds, which corresponds to a typical TDRS-to-TDRS hand-off time.
The GCN/TAN contact is: Scott Barthelmy,
This file was last modified on 12-Feb-97.