RHESSI Tohban report, 29-Apr to 26-May-2003
Andre Csillaghy, H. S. Hudson

0. Tohbans over the last four weeks have been negligent about writing
reports. This report will apparently have to serve for all of them. I
(HSH) hope we can keep up better in the future.

1. Solar Activity:

The activity level was low, sinking below the B1 level at background.
There were only four M-class flares through the 26th, although there is
now a likely region producing more of them and with the possibility
of a major event.

2. Memory Managment:

With the increased activity, the SSR fill level increased to 40%. It did
not decrease much yet, as the activity continued during Saturday.

3. Data Gaps:

4. Major operational gaps in solar coverage:

We carried out two programs of offpoint practice for the Crab Nebula
observations: May 8 and May 23. The latter was not perfect but was
judged by Gordon to be good enough for the real thing. The practice
brought the spaceraft within 4/10th of a degree of the target, 1.5
degrees south and 1.5 degrees west from sun center.

5. Crab observations:

These are now tentatively scheduled for June 11-12.

6. Mercury transit:

Martin Fivian reports success in getting a SAS signal from the Mercury
transit of May 7. This, with a little celestial mechanics, will provide
a clean check on the roll calibration.