Quote:
Originally Posted by multiweb
Stars are noticeably rounder with AO on. What's the guide rate you managed you say? 10Hz? Must have been a very bright guide star...
|
yep, it was bright. The lodestar exposure was 0.1s, but the actual update rate was less than 10Hz. I was doing testing, so chose a bright guide star by just scanning around to find one with a high SNR and then imaged whatever happened to be in the field at the time. I imagine that finding a bright enough guidestar would be a major practical issue.
The unguided EQ8 was producing nice round stars, so the AO could not improve on them. Have you ever found that the stars can be rounder, but a bit bigger, with AO on?