Sapce Dust or bad calibration?

[AstroRuz]

Hi all,

I'm fairly new to LRGB mono imaging but I'm just wondering if this image of M106 has space dust around it, or is it poor calibration? I think it's dust because of the colour. But just thought I'd ask other opinions. Thanks!

ASI 183mm Pro, Sky-Watcher 80ED, Optolong filters

3 min exposures LRGB, 10 mins for Ha

 

Edited April 10, 2021 by AstroRuz

[vlaiv]

I remember seeing some very deep images of M106 taken by members here on SGL - and space was "flat" around it - no noticeable nebulosity.

Very likely that it is calibration issue or light leak or something like that.

[CraigT82]

That doesn't look like IFN to me, I'm not experienced enough to say if it is bad calibration or not but hopefully someone wil be able to chip in with more thoughts on what the issue may be. 

I had a quick search on Astrobin for images of M106 which show IFN and couldn't find any. This one is 10 hours with a RASA 8 and 2600mc and if any image was going to show IFN it would probably be this one...

https://www.astrobin.com/full/pdyn75/0/

[AstroRuz]

Hmm thanks you two. Yeah probably something went wrong somewhere. Or I've overstretched the data I have. I'll try again without flats maybe or re-shoot the flats.

[AstroRuz]

I think I found the culprit. Here's a Hydrogen Alpha flat frame and I can see the "dust" going around the frame. Will have to re-shoot them I think.

[Astro Waves]

I know its not quite what you were going for with processing but I kinda like it in a sense that it has depth but also look like a vintage image or sorts.