Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  IC 1178  ·  IC 1181  ·  IC 1182  ·  IC 1185  ·  IC 1189  ·  IC 1190  ·  IC 1192  ·  IC 1193  ·  NGC 6039  ·  NGC 6040  ·  NGC 6041  ·  NGC 6043  ·  NGC 6045  ·  NGC 6047  ·  NGC 6050  ·  NGC 6054  ·  NGC 6055  ·  NGC 6056
Getting plate-solving status, please wait...
Abell 2151 RGB (OSC) - The Great Hercules Cluster, 



    
        

            andrea tasselli
Abell 2151 RGB (OSC) - The Great Hercules Cluster
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Abell 2151 RGB (OSC) - The Great Hercules Cluster

Getting plate-solving status, please wait...
Abell 2151 RGB (OSC) - The Great Hercules Cluster, 



    
        

            andrea tasselli
Abell 2151 RGB (OSC) - The Great Hercules Cluster
Powered byPixInsight

Abell 2151 RGB (OSC) - The Great Hercules Cluster

Acquisition details

Dates:
March 27, 2022 ·  April 2, 2022 ·  April 3, 2022 ·  April 8, 2022 ·  April 9, 2022 ·  April 21, 2022 ·  April 25, 2022 ·  May 4, 2022 ·  May 8, 2022 ·  May 11, 2022
Frames:
Optolong L-Pro 2": 283×180(14h 9′) (gain: 120.00) -10°C bin 1×1
Optolong L-Pro 2": 110×180(5h 30′) (gain: 120.00) -20°C bin 1×1
Integration:
19h 39′
Avg. Moon age:
10.65 days
Avg. Moon phase:
35.88%
Bortle Dark-Sky Scale:
7.00
Mean FWHM:
2.95

Basic astrometry details

Astrometry.net job: 5844855

RA center: 16h05m06s.2

DEC center: +17°4901

Pixel scale: 0.781 arcsec/pixel

Orientation: 208.739 degrees

Field radius: 0.513 degrees

Resolution: 3912x2664

File size: 7.0 MB

Locations: Home, Lincoln, United Kingdom

Data source: Backyard

Description

This the 2nd iteration on the subject and very likely not the last. I had high hopes about reaching both higher depth and better resolution than my previous attempt but, alas, the weather truned and I had to content myslef with the catch I had, as the end of astronomical night was drawing ever so near. On top of that I discovered a issue with ethe focuser showing significant tilt when refocusing which meant that the corners showedsignficantly elongated stars (one more job for the bright summer's nights, I suppose...). While disappointed on several front I'd consider this as a stepping stone toward a better and richer image one day.

Comments

Sky plot

Sky plot

Histogram

Abell 2151 RGB (OSC) - The Great Hercules Cluster, 



    
        

            andrea tasselli

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