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Greg Bradley | all galleries >> Galleries >> Greg Bradley AstroPhotos > Helix Nebula in Ha
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12-JUL-2011

Helix Nebula in Ha

Planewave CDK17,.66X reducer at F4.51
This is first light for the reducer on the Planewave CDK17.

11 x 15 minutes of 5nm Ha filter from my home observatory. hide exif

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Date/Time12-Jul-2011 21:26:51
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