Open Cluster NGC6939 in Cepheus

(RA 20h 31.4m , Dec. +60°38', 7.8 mag., 7 arcmin.)

This rich open star cluster is located 2° SW of h Cephei (see finder chart below). It contrasts with a nearby (though more distant) NGC6946.

The above image was taken on August 11, 2001 from Harrowsmith, Ontario with Cookbook 245 LDC CCD camera and Celestron Ultima 8 f6.3 telescope (autoguided with Cookbook 211 LDC camera on a piggybacked 500mm f8 telephoto lens). It is composed of multiple white exposures (10 x 120 sec.) and single cyan, magenta and yellow-filtered images (120 sec. each) combined with AIP4WIN. This image was then re-processed in Lab color space using Corel PhotoPaint 8.

North is to the left.

Map created in Guide 7.0 - 7°45' x 7°45'. North is up.

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