NGC 884

About image 

NGC 884 is one of the two open clusters that make up the Double Cluster of Perseus. Compared to its "companion" NGC 869, it is more photogenic due to the presence in the field of some orange stars.NGC 884 is 7600 light years away from us and has an estimated age of about 12.5 million years.

Technical data
Optic          GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount        10Micron GM2000 HPSII
Camera         Moravian G3-16200 with external filter wheel 7 positions
Filters         Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted RGB  
Guiding system    OAG Moravian M68 with guide camera Moravian G1-0301
Exposure details  R 8x300" bin2 -20C
          G 8x300" bin2 -20C
          B 8x300" bin2 -20C
Total integration  2h
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5
SQM-L       21.3    
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           26 October 2019


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