NGC4236 (aka Caldwell 3) - Spiral Galaxy in Draco

ngc4236 in Draco

Click on the image to see it 3x this size.

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From Wikipedia:

NGC 4236 (also known as Caldwell 3) is a barred Magellanic spiral galaxy located in the constellation Draco. The galaxy is a member of the M81 Group, a group of galaxies located at a distance of approximately 11.7 Mly (3.6 Mpc) from Earth. The group also contains the spiral galaxy Messier 81 and the starburst galaxy Messier 82. NGC 4236 is located away from the central part of the M81 group at a distance of 14.5 Mly (4.45 Mpc) from Earth.

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Scope: Planewave 12.5" CDK
Camera: Apogee U16M w Astrodon GenII LRGB
Mount: Paramount ME (MKS 5000 upgrade)
Luminance 22x10 min
9/10/11 x 10 min each RGB
Images acquired w TheSkyX Professional and CCD-Commander

PixInsight processing:
RGB: Gradient Removal, SPCC, BlurX, Curves, HistogramTransformation, masked Saturation boost
Lum: Gradient Removal, BlurX, Curves, HistogramTransformation, Local Histogram Transformation

Photoshop processing:
Luminance enhanced with a duplicated HPass filter layer (layer mask to just enhance the galaxy) then this was added to RGB as a luminance layer.

Click on the image to see a larger version.

Lucknow, Ontario, Canada
June 2024