focus differences between 294 and 183

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graywmj5
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focus differences between 294 and 183

#1

Post by graywmj5 »


HI all,

I have a focusing issue that I am struggling to understand. I currently use an ASI294 and ASI183 on a C11(CS) with Hyperstar. The 294 performs great and autofocus (SGP) focuses down to 2.0 and less with great quality. When I mount the 183, I cannot get the HFR below 4.5 and autofocus cannot come up with any better result. As a test, I borrowed a friend's 183 and attempted focus. I got exactly the same result.

Perhaps someone can give me an idea on a direction to solve the problem.

Thanks, Bill
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JayTee United States of America
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Re: focus differences between 294 and 183

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Post by JayTee »


Does the camera profile in SGP actually show the 183s correct sensor size and pixel dimension or did it do an auto copy of the 294s data over into that profile?
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
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AstroBee United States of America
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Re: focus differences between 294 and 183

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Post by AstroBee »


that's my thoughts too. It's using the same pixel scale profile from the 294.
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graywmj5
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Re: focus differences between 294 and 183

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Post by graywmj5 »


Thanks for your responses. I have the 294 and my 1st profile and the 183 as my second. I should be using the second profile for the 183. Yes, I did change all the data to reflect the 183.

But, that being said. I should triple check it.

Thanks, Bill Gray
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