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And thank you Burly for the tip about flocking material. Will have to get some of that to fight with the reflections. I used a dew heater on the lens so that wasn't a problem, but there was a layer of ice on everything else by the time I was done imaging

And here is the single subexposure that Ivo is using in the previous post. If someone is tracing his steps

https://drive.google.com/file/d/13tmBUP ... sp=sharing

Took a closer look at my light frames and the lighter colored area in the lower left is visible in 36 of the light frames and then just completely disappears. Now I'm thinking that it's a reflection from some light that was shining on my lens hood? The lens hood on my Sigma is far from being complet...

I don't think I'm allowed to send private messages yet my email address is my alias at gmail

Thank you for the reply. Glad to hear that the data is not worthless and that I'm just bad at editing. That's an area that I can work on even when it's cloudy outside :D For some reason the image you posted shows up as tiny for me, but I think I can see the cloudy area. I'll try to stack the images ...

I'm just starting out taking pictures of the night sky and I'm a bit stuck. Two nights ago it was clear here, a bit chilly at about -20°C. I tried to image the elephant's trunk nebula using astro modded canon 6D, 150mm f2.8 Sigma lens wide open (I know that this might be a problem, but I'm willing t...