ASI1600MM Cool - Odd noise in Narrowband

iuseglasses

Hello everyone,

Yesterday, I received my brand new ASI1600MM-Cool kit from OPT with the 8 position EFW and 31mm filters. I was very excited to get it up and running to compare to my ASI1600MC-Cool that I had been using.

This morning, I thought that the images (especially Ha) had great data. But upon further inspection, there is a strange, blocky noise pattern on each narrowband frame. It certainly doesn't look like it should be there. Also, comparing older subs from the ASI1600MC-Cool, they show a much cleaner image. Anyone have any suggestions? These were shot at unity gain.

Two screenshots can be found here: https://www.dropbox....ZVIvz5KSxa?dl=0

Thanks!

Jon

iuseglasses

Screen Shot 2017-07-29 at 11.55.19 PM.pngHere is another screenshot where you can see the very bad, square, black pixel groups that are in every shot.

Sam@ZWO

you can try to add one raw frame in dropbox

iuseglasses

Sam wrote:
you can try to add one raw frame in dropbox

FIT files can be found below:

https://www.dropbox.com/sh/r9qf0x3j70zdivx/AAC11OsZcsjDVsrG7FTh2rxSa?dl=0

iuseglasses

Sam wrote:
you can try to add one raw frame in dropbox

Were you able to take a look at the raw FIT files?

einari

Looked at fits files and after stretching they looked pretty normal to me.

Sam@ZWO

iuseglasses wrote:
Sam wrote:you can try to add one raw frame in dropbox

Were you able to take a look at the raw FIT files?

it's a little strange from your image, the histogram's shape is not correct

can you put one dark frame?

iuseglasses

Sam wrote:
iuseglasses wrote:
Sam wrote:you can try to add one raw frame in dropbox

Were you able to take a look at the raw FIT files?

it's a little strange from your image, the histogram's shape is not correct

can you put one dark frame?

Hi, a dark and a bias FIT file are in the link before. Here it is again: https://www.dropbox.com/sh/i5jy3dkn30oqsw8/AAAbKhXvSAe9EduOO3pkte1Ya?dl=0

Thanks,

Jon