August 2004 Image of the Month


Trifid Nebula M 20 Sagittarius

C-18 with ST-2000 CCD and Astronomik type2 filter set

This is an LHaGB exposure using a 13nm Ha bandpass filter for the red information.

Exposure times were 5 minutes each color

This inset shows the combination of resolution and light gathering power

necessary to reveal 7 stars in the centered grouping.


C-18 images courtesy of Norma Rose Observatory, Queensland, Australia.


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