25 Sep 20 x 20 sec/5 darks/5 bias/ISO 800 20 x 2 min/5 darks/5 bias/ISO 10001 Oct 25 x 5 min/5 darks/5 bias/ISO 16008" Celestron/C-GEM Mount/Canon 60daAll times stacked separately. Layer masked in Photoshop CS 3 to preserve central detail.
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