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Originally Posted by Dennis
Hi Roger
Hmm, sounds like you've almost got the ST7 behaving like an adaptive optics unit! I must give that a try (0.5 secs) with my set up and see how I fare. The fastest guide exposure I have previously used was 2 seconds and it seemed to work okay.
Is your ST7 parallel (like mine) or USB?
Cheers
Dennis
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Sorry about the delay Dennis - was out observing in the country for the weekend.
My ST7 is a parallel one. That's about the only reason I have it - they had a sale of parallel ones a few (2?) years back and it was cheap
Still Class1 and all that. I wish it was USB, would help the download times for full image wonderfully. But even then, it annoys me that SBIG still only use USB 1.1 not 2.
I agree it seems at that 0.5 sec range it appears to start behaving like a adaptive optics unit, but without understanding any of the technicalities or capabilities I don't see how that could be possible - surely it would remove or decrease the need for an AO7. There's lots I don't understand about the A07 though and hence the differences between adaptive optics as implemented with an AO7 and a fast correcting mount. Anyway, 0.5 sec or better I definitely notice an improvement in image quality so something is hapenning.
Roger.