QHY 268 C gain and offset recommendations.
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QHY 268 C gain and offset recommendations.
Hi.. I read a lot of different opinions on gain and offsett settings. Aside from the bit about making sure the histogram is slightly to the right of the left edge, I am wondereing what criteria you use to decide what gain to use for any given target ?
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Re: QHY 268 C gain and offset recommendations.
I can't realy help you, usually the offset and gains are programmed into the ascom driver by the manufacture in various settings ie unity gain,high gain ,fullwell,dynamic range ectt or they have a graph for it . i would asume there is a preset setting for the offset based on what camera gain option you choose .
https://www.amateurastrophotography.com/qhyccd-tips
https://www.amateurastrophotography.com/qhyccd-tips
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Re: QHY 268 C gain and offset recommendations.
For your camera qhy recommends that you start at gain setting zero. After you get comfortable there then you can make changes as your experience dictates. Here is the article I use to understand both gain and offset.
https://cloudbreakoptics.com/blogs/news ... xel-part-3
https://cloudbreakoptics.com/blogs/news ... xel-part-3
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
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Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
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