11 images in luminance showing the galaxy cluster Abell 1377, each with 180 seconds of exposure, captured using a 0.61m f/6.5 Corrected Dall-Kirkham Astrograph at the Sierra Remote Observatory. Calibration, registration, and stacking were performed with IRIS. Before removing the background gradient, a star mask was applied to reduce the star brightness, allowing the galaxy behind to become more visible.
Name: NGC3850
Coordinates: 11h45m35.5462s, +55d53m13.100s
Type: Galaxy
Redshift: 0.003866
Distance from Earth: 60 Million Light Years
Velocity: 1300 km/s
Size: 38000 Ly
Name: NGC3888 Coordinates: 11h47m34.3762s, +55d58m01.664s Type: Galaxy Redshift: 0.007986 Distance from Earth: 130 Million Light Years Velocity: 2500 km/s Size: 74000 Ly
