robrj
Member
Posts: 248
home town/country: Escondido, CA
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Post by robrj on Aug 29, 2017 14:06:24 GMT
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Post by howie1 on Aug 30, 2017 2:09:18 GMT
Thanks for the info Rob ... looking right now for a lightweight and sensitive mono guide cam. My 2nd hand kit came with the Orion SSAG. But it doesnt work with SharpCap so I cannot use it for PA and then also for guiding (when I get into that). I've read you can download a new SSAG driver and also some version of ASCOM in order to get it to work with SC. Which I need to try. But the new small asi290 guider is another option. Ta.
BTW, for those who know I have a ASI224 which I use for SC Polar Align ... yes I know it will also act as guider with PHD2 etc ... but not mine. For ages I have been unable to get sharp EAA with it. And using it lately for the SC PA routine, I'm surprised it works at all! Stars all look like blobs with a bright core, but SC still manages to find smaller blobs and selects them for the PA routine. It's nice and sharp doing daytime testing at low gains like 10 / short exposures like 100th of a sec. It's just about ok around 6 or 7pm looking at distant lights across the Bay etc at gains of 50 to 100. But once up around 150 and above ... it's almost like the fill well's over-saturate really, really quickly and bleed into surrounding pixels. The SSAG is very sharp through the same finderguider so it definitely seems something to do with the ASI224. Even so, I've still gone ahead and dismantled the finderguider to clean its lens, and also cleaned the 224's sensor protective window, and tried with and without a UV/IR filter. Still shows fuzzy blobs. It really seems something to do with the ASI224 going above 150 gain / longer exposures. Wierd. Might send Sam at ZWO an email.
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Post by ChrisV on Aug 30, 2017 6:08:05 GMT
That will be great. I usually use the 290 for guiding. But it's a great live imaging camera !!!!
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