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andrews porter

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Rosette Nebula image

Rosette Nebula


Acquisition Details
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Description

This LRGB image was taken on Feb. 9th and 14th from Forest Grove, OR using an ST-2000XM camera and 4 Televue Genesis SDF refractor. I used a minus-violet filter on the L and B images to reduce star bloat somewhat. The luminance image is a std. deviation mean combination of 40 two minute images with slight unsharp masking. R, G, and B images were a combination of 10 images each of duration 4.5, 2, and 3 minutes. Combining was done using Ray Gralaks Sigma Pre-beta 11 program. Color combine and level and curve processing were done with Photoshop