M51: Whirlpool Galaxy in HaLRGB
Messier Object 51, known as the Whirlpool Galaxy, is a spiral galaxy in the constellation Cannes Venatici. The galaxy is located approximately 23 million light years from Earth. The galaxy is interacting with NGC5195 (top of image, see annotated image below).

This is a favorite target of Claustonberry Observatory, as well as many other amateur and professional astronomers. In this image, we have combined RGB color information with Ha (Hydrogen Alpha) and Luminance channels to provide additional detail in the structure of the galaxy.

Image & Equipment Details:
Date: 3/31/2017
HaLRGB Image
R: 8X300s Bin 2X2
G: 8X300s Bin 2X2
B: 8X300s Bin 2X2
L: 8X300s Bin 2X2
Ha: 8X300s Bin 2X2

Calibrated with bias, flat, and dark frames
Processed in PixInsight
Temp: -30C

Imaging Scope: Explore Scientific 127CF Apochromatic Triplet
Imaging Camera: SBIG STF-8300M

Annotated Image: