Pinwheel Galaxy

Pinwheel Galaxy in Ursa Major, 21 million light years away.

This isn’t a great picture. I didn’t take black or flat frames, so the image is noisy with a big light gradient. Also, I couldn’t see the galaxy naked eye, so I was pointing the scope at where I thought it was. As a result it was at the very edge of the frame. There’s some star trailing that is visible in this cropped portion, so I’ll have to shorten the exposure to 30 seconds per frame next time. Still, I don’t think it’s shabby for the first deep-sky image with the new camera

Shot 4 August 2019; Princeton, New Jersey; Exposure: 61 minutes (61 frames @ 1 min), f/5.2; ZWO ASI 1600 Pro 36mm narrowband, cooled, monochrome, CMOS camera & Televue NP127is telescope as lens; post-processing: DeepSkyStacker and Photoshop CC.

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