Date Posted: 10/22/2025
Date Taken: Two nights, 1/23 - 1/24/2025
Camera: SBIG STL-11000 with Astrodon Tru-Balance E-Series Gen2 filters
Temp: -15C
Mount: Losmandy Titan
Guiding: SSAG, Celestron 80mm guide scope, 600mm.
Exposure: LRGB 270:105:105:105, total 9.75 hours. Luminance 15min unbinned, RGB 5 min, binned 2x2

Calibrated and Stacked with CCDStack2; RGB combine and DDP with MaximDL. Processed with CS4.

NGC 3359 is a barred spiral galaxy located 59 million light years away in Ursa Major. Distance estimates vary greatly, ranging from 41 to 65 million light years. The galaxy has a small central bar with an inner ring that circles the bar.

I originally had the galaxy centered, but after stretching I thought the galaxy at upper right was interesting enough that I shifted the image crop to include it.