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M81 & 82


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Hello everyone!

Had a nice week yet again last week, these clear skies for the UK recently are astonoshing! Usually I can get 3-4 nights per month of imaging, not per week!

But there was a bright half moon night after night so I decided to point the scope north, on some relatively bright galaxys, M81 and M82. This is my first fully non-manually dithered image. Wow does dithering make a huge difference, very clear of a lot of noise, and the added bonus of not having to use darks!

The only trouble I had with this, was there was dust bunnys that appeared on the picture. I used flats, but didnt take them until the morning before processing, so I wondered if the dust bunnys just moved, because they certainly worked to get rid of any gradients from vignetting.

7 hours of data, 2min subs

40 Flats

40 Bias

Manually stacked in Siril

ZS61 + 800D


ASI224mc + AstroEssentials 50mm guidescope

Astroberry to control the camera and guiding.

Randomly Dithered 10 pixels every 3 frames

Let me know what you think :)


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