IFN around M81 & M82 (MW 3)

[Knight of Clear Skies]

Here's a wide view of the IFN around M81 & M82.

Can just make out Arp's loop and Holmberg XI. Taken with the Samyang 135mm f2 and Canon 6d, about 3 hours of data in 2 minute subs on the Star Adventurer. (Flats and dark bias, no darks.) Had to crop it down a bit as the framing wasn't great, I was literally shooting in the dark on this one. Wish I'd moved over to the right more to catch more of the brighter nebulosity, but I didn't really know what to expect until I stacked it.

The inverted BW version shows the extent of the IFN a little more clearly.

Field of view is 14 x 9.36 degrees.

Edited March 13, 2021 by Knight of Clear Skies

[Adreneline]

Very interesting. I'm hoping to have a go at IFN with my Samyang 135 and ASi294MC - got to be worth a shot.

Thanks for sharing.

[Paul M]

I quite like the framing, it shows off that tendril of nebulosity upper right of center very nicely. 

[callisto]

Love that image 👍

[Knight of Clear Skies]

Looking again, I'm going to have to reprocess this from scratch. I went to stack another target using the same file list of calibration frames and noticed it wasn't set up correctly, I'd made a master dark bias but hadn't removed all of the source files. Could explain some of the walking noise patterns in the stack I had a lot of trouble reducing.

Bit of a shame as it took a lot of work to get to this point, IFN isn't easy to work with.

Edited March 15, 2021 by Knight of Clear Skies