ASI1600MM-C - Smudge and pattern

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souls33k3r
Posts: 18
Joined: Mon Jan 02, 2017 4:23 pm

ASI1600MM-C - Smudge and pattern

Post by souls33k3r » Tue Mar 05, 2019 12:34 pm

Hi there,

I've been imaging this target in the last few days and i'm struggling to figure out what this is.

Two issues that i'm seeing (please do correct me on this) are the strange cloudy feature appearing and secondly grid like pattern.
received_299734164037955.jpeg
I've stacked the image using "Darks" only (as i have always been) using both MaximDL and PI (using the same method in my previous images) and still can't seem to get rid of this.

Getting concerned about the health of the camera. This only shows up on a OIII image (side by side to Ha on the left and OIII on the right on the same night, boosted the stretch using PI STF)
jf2.jpg
Not sure if the camera started to dew up on the window but that has never happened before.

The filters are enclosed within the ZWO EFW, do the filters dew up while being in the filter? If so, how can one avoid this?

souls33k3r
Posts: 18
Joined: Mon Jan 02, 2017 4:23 pm

Re: ASI1600MM-C - Smudge and pattern

Post by souls33k3r » Wed Mar 06, 2019 3:24 pm

Last night i took some flats.

Below are the master flats of all three NB channels and the same streaks and smudge appears in all three channel. Now i'm getting super concerned :cry:

OIII Master Flat
For SGL.JPG
SII Master Flat
SII master flat.JPG
Ha Master Flat
Ha master flat.JPG

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chad
Posts: 498
Joined: Thu Feb 09, 2017 4:58 am

Re: ASI1600MM-C - Smudge and pattern

Post by chad » Fri Mar 08, 2019 1:57 am

Hi,
Please try to check whether there is dew. You can directly cooling and check visually without connecting the lens. You can also take a few uncooled images to see if there is a problem.
And, also do not forget to check the lens, sometimes lens dirty, also can have similar phenomenon.
Thanks
Chad
ZWO Driver Engineer
Location:lon=120.6 lat=31.3
SuZhou China

souls33k3r
Posts: 18
Joined: Mon Jan 02, 2017 4:23 pm

Re: ASI1600MM-C - Smudge and pattern

Post by souls33k3r » Fri Mar 08, 2019 12:22 pm

Thanks Chad. I will do and will report back as soon as i am able to perform these tests

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Sean.Wang
Posts: 660
Joined: Mon Apr 24, 2017 10:08 am

Re: ASI1600MM-C - Smudge and pattern

Post by Sean.Wang » Mon Mar 11, 2019 2:06 am

souls33k3r wrote:
Fri Mar 08, 2019 12:22 pm
Thanks Chad. I will do and will report back as soon as i am able to perform these tests
waiting for your reply :)
ZWO | Marketing Consultant
Location:lon=120.6 lat=31.3
SuZhou China

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