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Deep Sky Images
Horsehead (up close)

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Horsehead (up close)

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Date: 1/16/2006
This is a cropped close up of the tall field version of the horsehead. I thought it might be interesting to crop it in a more classic composition.

This image uses a bi-colour technique developed by Steve Cannistra to synthesize a green channel by multiplying OIII and Ha with different weights.

3.5 hours of Ha (10nm) and OIII (15nm) narrowband filters with a Pentax 300mm telephoto lens @f4, SBIG ST8i CCD, piggybacked to my 8" LX200GPS and guided using a Meade DSI and Maxim D/L. Data was captured on 2 nights from Jan 14, 2006 to Jan 16, 2006. Calibration and DDP in MaximDL, colour mixing and processing done with Photoshop CSII.

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