New ASI071mc-pro calibration files reveal a defect?

ulteriormodem

Just got a brand new ASI071-cm pro the other day and set out to create my dark calibration file library.

This was put together from 30 x 600sec darks at 90 gain 20 offset, cooled to -15C. Captured in 16bit raw, dew heater was off.

~~Uth Oh by Tom Whit, on Flickr~~

It all looks pretty normal except for that glow in the upper left side of the image.

At first I thought it might be a light leak so last night I shot another 600sec frame in a near total dark room. The glow is still there regardless of the camera orientation.

Is this a defect? Should I be concerned about this?

katherine.tsai

https://astronomy-imaging-camera.com/faq

What is Amp-glow and how do I manage it?

ulteriormodem

Thank you for your reply.

At the risk of sounding snooty, I am well aware of what 'amp glow' or more correctly, read noise , nd dark current is. I am also aware of how to deal with it in processing.

My point was that this is a brand new ASI071mc-pro. A camera that boasts very low read noise and dark current due to its DDR3 memory buffer and TEC cooling.

I would not expect a camera with such claims produce a prominent glow like that.

My point, question was, Does this need to be returned?

katherine.tsai

It does not.