M103 NGC 581

M 103 is a small and moderately bright open cluster in Cassiopeia, about 1 degree north east of delta cassiopeia. Being small and compact, it is a very good cluster for the telescope.

56 minutes exposure, Kodak Elite 200 slide film.
5" f/5 refractor at prime focus.

65 minutes exposure, Fuji Superia 200 film.
5" f/5 refractor at prime focus.

M 103 is situated in a very rich region of the northern Milky Way. The region is especially rich in open clusters, several of which are recorded in the above image. To the upper left of M 103, is the small cluster Cr 15. Near the top left corner is NGC 654, while below it is the large cluster NGC 663. to the lower right of this cluster, near the bright star, is the small cluster, NGC 659

1 Combination of 15 1 minute exposures. Modified Canon Digital Rebel DSLR camera.
5" f/5 refractor at prime focus.

Combination of 10, 3 minute images using red, green, and blue filters.
SBIG STL-1001E CCD camera.
5" f/5 refractor at prime focus.

Combination of 15, 1 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.

The above image combined with the colour data from the DSLR image.