ASI178MC Gain/Offset Combinations

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ASI178MC Gain/Offset Combinations

Postby khrrugh » Sun Feb 11, 2018 6:13 pm

Hi @ll,

after more than half a year using the great ASI178MC with several combinations of Gain/Offset, i thought it would be a good idea to stick to only a few standard combinations. So after reading through many posts in several forums i'd like to discuss if these combinations do make sense or if i need to adjust them (the numbers represent the settings in SharpCap, where Gain=Gain and Offset=Brightness):
    * LOW: G 85 O 75
    * MEDIUM: G 128 O 300
    * HIGH: G 192 O 400
Any ideas about these settings? Good or bad?
Thanks in advance for any advice!

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Re: ASI178MC Gain/Offset Combinations

Postby Sam » Tue Feb 20, 2018 2:10 am

not bad, offset is just used to avoid data has been clipped below 0
so you can tell from histogram it is OK if no data below 0 with the combination
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Re: ASI178MC Gain/Offset Combinations

Postby khrrugh » Tue Feb 20, 2018 8:48 am

Thanks for the reply, Sam. It is good to know that the settings are a okay, but i think i have another problem. Whenever i set the brigthness setting (under "image controls") to a value just a bit higher than zero, the whole picture is getting just white. But i think this is no problem with the camera, probably it is the user doing something wrong in sharpcap :-)
I now must only figure out how to tell the camera to use the correct offset. Note: I do not use ASCOM, i use the native driver. Do you have any hint regarding this?
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