Date Posted: 9/1/2021
Date Taken: 4/4/2021, 4/5/2021, 4/11/2021, 4/16/2021, 5/1/2021, 5/8/2021
Scope: Planewave CDK 12.5 f/8, 2541mm
Camera: SBIG STL-11000 with Astrodon Tru-Balance E-Series Gen2 filters
Temp: -15C
Mount: Losmandy Titan
Guiding: On-axis via ONAG-XM and SX UltraStar at 2541mm. FocusLock real-time focus for focusing.
Exposure: LRGB, 410:145:150:155. Luminance 10min unbinned; RGB 5min binned 2x2.

Calibrated and Stacked with CCDStack2. Processed with CS4.

Abell 2151, also known as the Hercules Cluster, consisting of about 200 galaxies. It is about 500 million light years distant. I believe that makes it the furthest target I have imaged to date. There are numerous NGC and IC galaxies, I'm not going to list them all.

Some galaxies of note in this image:
- Just right of center is the obvious double galaxy NGC 6050, which is actually a triplet, with the third galaxy peeking through the spiral arms above and between the other two.
- NGC 6045 is the sideways, s-shaped galaxy to the right of NGC 6050.
- IC 1182, just above and to the left of center, sports 2 jets, one fairly distinct, emanating almost horizontally to the left, the other more diffuse and hook-shaped at about one o'clock.
- IC 1178 and IC 1181 are the two brighter galaxies near center-bottom of the image.
- NGC 6040 is the S-shaped galaxy in the interacting pair at far right.

Imagine what your sky would look like if you were on a planet in a galaxy somewhere near the center of the cluster.