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ASTAP needs at least 30 stars to resolve. From my city sky I often had difficulties with the C11 reduced to about 1600 focal length and the Asi 2600 mc except when the framed fields ranged in areas rich in stars.
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Michele Bernardo: Certainly helps but not necessary in my experience. I’m at 2350 FL / f10 and if seeing is 3” or better, ASTAP often works at 10 stars or even less. At anything more than 10 stars, I’m usually good to about 4.5” seeing. If seeing is worse than that, I have problems with any number of stars….. Cheers, Scott |
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At 2500mm I use bin2 and 2 second exposures usually to solve.
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Kyle Goodwin: I generally use 4s exposures, sometimes longer if I don't get enough stars, especially when I'm trying to get going as early in the evening as possible, and occasionally, if it's a dense starfield, 1 or 2s helps when seeing is really bad. Generally when it's that bad, it's more a case of 'lucky' platesolving.....if you keep trying, you might happen to get a sharper image that works. Fortunately, the first PS slew almost always centers the target, so I only have to get lucky once. Cheers, Scott |
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Scott Badger:Kyle Goodwin: Since my setup is permanent and automated I don't do anything manually, so it's always nautical twilight when my system does its first solve. |
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My system is 2500mm at f/7.2 and ASTAP never fails. Like others have mentioned, perhaps OP can post an example of an unsolvable image and others can try to see if it solves for them. Perhaps it can give clues on image quality and/or parameter settings.
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I'll save an example of a solve failure the next chance I get to image, which might be a while given my weather conditions.
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I'm sorry I've been watching so many tutorials I forgot to come back here. 90% of the issue was my poor knowledge and experience with using EAF and ASI air. The rest was probably just trying too early, I'm learning new things not to do nightly. Thank you all and great tips from everyone. John |
