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NGC869 NGC884 Double Cluster

 

Object

NGC869 NGC884 Double Cluster

Constellation

Perseus

 
Location

 

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Instrument

8" F/2.6

Camera

STL-11000M

 
Exposure

 

Date

July 2005

 

Notes: An early image taken during focus trials. Several itterations of collimator focus followed by field trials were required to confirm alignment of telescope system mechanics.

The sub-frame image was taken before the objective final figuring and coating.

 

  images and text © 2006- 2014 Dave Erickson