Hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  NGC 1250  ·  NGC 1265  ·  NGC 1272  ·  NGC 1275  ·  Perseus A
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Perseus Galaxy Cluster, 


            PJ Mahany
Perseus Galaxy Cluster
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Perseus Galaxy Cluster

Technical card

Imaging telescopes or lenses: Celestron 11" Rowe-Ackermann Schmidt Astrograph

Imaging cameras: QHYCCD QHY268c

Mounts: Software Bisque Paramount MX+

Guiding telescopes or lenses: Orion 50mm guidescope Miniguider 50mm

Guiding cameras: Orion Starshoot Autoguider Orion Starshoot Auto-Guider

Software: StarTools  ·  TheSkyX Pro  ·  SkyTools  ·  SharpCap 3.1 Sharp Cap  ·  PixInsight1.8

Dates:Nov. 15, 2020

Frames: 80x60"

Integration: 1.3 hours

Avg. Moon age: 0.32 days

Avg. Moon phase: 0.12%

Basic astrometry details

Astrometry.net job: 4121275

RA center: 3h 19' 41"

DEC center: +41° 28' 1"

Pixel scale: 1.769 arcsec/pixel

Orientation: 177.250 degrees

Field radius: 1.274 degrees

Resolution: 4311x2881

Locations: Sierra Nevada Mountains, Near Yosemite, California, United States

Data source: Backyard


One of the most massive Galaxy Clusters known with > 1,000 members. Also includes Perseus A, the most brilliant X Ray source in the sky.

Binned 1.5x1
Gain 30
pedestal 12
Dithered using BYEOS running independent with PHD of everything else.



  • Perseus Galaxy Cluster, 


            PJ Mahany
  • Final
    Perseus Galaxy Cluster, 


            PJ Mahany


Description: New processing, played with the Black Point. Much deeper with the color contrast.

Uploaded: ...

Sky plot

Sky plot


Perseus Galaxy Cluster, 


            PJ Mahany

In these public groups

SF Bay Area Imagers
Celestron RASA