NGC 4559 (2025)

This is my version of the well-detailed spiral galaxy NGC 4559 located 30 million light-years away in the constellation Coma Berenices. Also known as Caldwell 36, this galaxy is about 100,000 ly across making roughly the same size as our own Milky Way galaxy. The galaxy has very large dark dust lanes along with several HII regions and star clusters scattered throughout the spiral arms. Most of these HII regions and star clusters are distinct enough to have their own IC designations. One of my favorites is IC 3564 located on the bottom portion of the galaxy. Interestingly, the yellow star just below the dense blue knot (IC 3550) at the end of the right side spiral arm was given a designation of IC 3554.

The weather has been particularly wacky lately which explains the four days spread over a month.

Dates: 4-27, 4-28, 4-30, 5-26

Higher Quality:
https://www.astrobin.com/ner5te/?nc=collection&nce=712

NGC 4559 (2025)
Dates: 4-27-25, 4-28, 4-30, 5-26
Camera: ZWO ASI294MC Pro
Telescope: Celestron EdgeHD 800
Barlow: None
Focal Length: 2032mm (native)
F/10 (native)
Focal Reducer: None
Mount: Orion Atlas Pro
Filter Adaptor: ZWO Filter Drawer
Filter: Optolong Luminosity (2-inch)
Focuser: ZWO EAF
Autoguiding: Askar M54 OAG/ZWO ASI174 mini
Exposure: Lum 254 x 90 (6h 21m)
Gain: 139
Offset 0
Temp: -10 C
Processing: Asiair app, PixInsight, Photoshop, BlurXT, NoiseXT, StarX, Bill's Color Masks, Bill's Stretching, GraXpert, Topaz Denoise

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