ASI 183MM Pro - Amp-Glow Artifact

starjunkie

This is two 5min. Ha subs, stacked with calibration frames (25 dark, 25 flat, 25 bias).

I am unable to remove the artifact (on the right side of the image) through calibration.

My subs were taken via SGP. Gain settings (default):

Gain = 200

EGain = 0.3619999886

Questions: Is my gain too high? Should I set it to zero, or some lower value? How to I correct for this issue? Is this a driver issue? I'm using ASCOM V1.0.3.12.

Thanks!

-Chris

Sam@ZWO

please try to calibrate with dark only and see if the amp-glow go away?

another question: did you take the dark after light?

gain should be ok, just make sure it's the same when you take light or dark

starjunkie

Correction on my last post, they are (2) 10 min. subs. I have uploaded a JPG of the latest calibration with the darks only. The darks were taken with the same gain, exposure, temp settings as the light. I still see the artifact.

By the way, this image is unprocessed from the stacking software.

starjunkie

Well it turns out the camera is not defective, just me :

I thought I was using 10min calibration dark frames, but they were 5min. Apologies for the confusion and the posts.

Thank you for helping me out anyway.

-Chris

Sam@ZWO

that's good news you find the issue