The Crescent Nebula

 The Crescent Nebula

The Crescent nebula has always been on my wish list since the film days. I think this is a most interesting nebula.

It formed by the fast stellar wind from the Wolf-Rayet star WR 136 (Bright star in the middle) colliding with and energizing the slower moving wind ejected by the star when it became a red giant.

Had to overcome a bunch of issues last night. Think I ended up imaging our neighbors pine tree at one point and had some autoguiding issues. I expected higher quality... anyway, here is Crescent Nebula after 1 hour and 35 minutes.

Technical Info:

Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL

Explore Scientific 2" HR Coma Corrector

Camera: ZWO ASI533MC Pro

Filter: 2" Optolong L-Enhance

Mount: Losmandy GM8

Guiding: QHY Mini Guide Scope + PHD2 Software

Acquisition: Sequence Generator Pro

Exposure: Light (Gain 200) - 19 exposures @ 300 Seconds (1 hours, 35 Minutes)

Calibration: 50 Bias, 30 Darks, 0 Flats

​Processing: Deep Sky Stacker, Adobe Photoshop, Topaz Denoise AI, Astronomy Action Set plug in for PS, Astro Flat Pro plug in for PS