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25 Jul 2018
Glad to announce of release of INDI Library v1.7.4 on 2018-07-25. A few drivers were added in this release as we continue to improve & stabilize existing drivers.
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TOPIC: ASI183MM-C Offset

ASI183MM-C Offset 5 months 1 week ago #23844

Hello Forum,
if I use the ASCOM driver of the ZWO ASI183, no offset setting is provided. Under INDI, an offset setting is possible.
In some cases I switch between INDI and ASCOM for the same deep-sky object. What is the right offset setting here?
I use gain 53.

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ASI183MM-C Offset 5 months 1 week ago #23900

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It would probably be best asked on the ZWO forum, but I am pretty sure Sam and company have locked the new cameras at 50 offset.

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12" pier with HDX110 using EQMod
ASI 1600 mono/color mains with ASI290MM in off-axis
ASI filter wheel
Moonlite focusers for the sharpening
AT115EDT and 8" Newt for the light
Fedora Linux, 100% INDI

ASI183MM-C Offset 5 months 1 week ago #23905

I did it parallel.
Thomas

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ASI183MM-C Offset 5 months 1 week ago #23935

SAM said:

we fix it to 10 under ASCOM

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ASI183MM-C Offset 5 months 1 week ago #23936

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Good information. Each camera has a different fixed offset then. That makes it fun :)

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12" pier with HDX110 using EQMod
ASI 1600 mono/color mains with ASI290MM in off-axis
ASI filter wheel
Moonlite focusers for the sharpening
AT115EDT and 8" Newt for the light
Fedora Linux, 100% INDI

ASI183MM-C Offset 5 months 1 week ago #23938

You are right.
I was skeptical and went into the lab. I did 31x bias frames with each setup setting offset to 10 in the INDI Driver. Sam was right.
ASCOM_Masterbias_31xFrames
            K
count (%)   100.00000
count (px)  20181312
mean        674.313
median      674.133
variance    14.539
stdDev      3.813
avgDev      2.955
MAD         2.512
minimum     608.000
maximum     893.935


INDI_Masterbias_31xFrames
            K
count (%)   100.00000
count (px)  20181312
mean        674.009
median      674.065
variance    13.129
stdDev      3.623
avgDev      2.810
MAD         2.202
minimum     586.240
maximum     841.263

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Last Edit: by starhopper.
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