Rho Ophiuchus Region

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Technical data:
Scope:   Borg 100ED F6.4 w/Multi-flattener
Mount: Losmandy G11
Guider: SBIG STV / Borg 76ED @ F6.6
Camera: Planet Town 6x7 vacuum-back astro camera
(Pentax 67 coupling)
Film: Kodak E200 (+2 push)
Exposure: 60 minutes

This area, spanning parts of Ophiuchus and Scorpius, is a favorite area of photgraphers because of the range of colors and variety of objects visible in a single shot. The brightest star is Antares, and the two globular clusters are M4 (to the right of Antares) and NGC 6144 (above and to the right of Antares). Note the dark areas above and to the left of Antares where clouds of matter are obscuring the background stars of the Milky Way.

Vignetting (dark areas in the corners of the photo) is caused by the narrow opening of the Pentax 67 camera coupling used for this setup.

Copyright 2001 by David A. Kodama, All Rights Reserved