"Double Star Cluster"  in Perseus

About this image

This  is  the  famous "Double Star Cluster"  in Perseus,   one  of  the truly  classic examples  of a galactic  cluster, and  a wonderfully beautiful object   for moderate  telescopes. Among  the all-time  favorites   for  amateur observers,   it may be  seen without optical  aid as  a hazy patch of  light  about midway between the stars of Perseus  and  the  familiar "W" figure  of Cassiopeia.   A small  telescope  reveals  that  this luminous  spot  consists  of  two  fine  open  star clusters  to­gether  in  the  field,   the  pair  forming one of  the  most  impressive  and spectacular objects  in  the entire heavens.   In the  mythological  outline of  the  constellation it  marks  the "Sword Handle"  of Perseus  and   is  often  identified  on star atlases by  the  inconsistent  designation  "h -  x" Persei. The  cluster  called  "h"  is  NGC  869,   and  "x"  is  NGC  884.

Technical Details

Optics
Vixen ED81S
Mount
HEQ5 synscan pro
Guiding
9x50 Finderscope, DMK21AU04, PHD guiding
Camera
Canon EOS 450D
Filters
-
Date
06 Oct 2011
Location
Kifisia, Greece
Constellation Perseus
Exposure
4x5 min ISO 200 light frames; 4x5 min ISO 200 dark frames
Programs used
ImagesPlus 3.82

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