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Old 04-09-2008, 09:04 AM
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g__day (Matthew)
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Join Date: Dec 2005
Location: Sydney
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More details guys:

Its a single shot at ISO 800 of 1200 seconds duration captured on a Canon 400D in RAW mode, downloaded using the Canon EOS utility (triggered by DSLR Shutter) into Canon Zoombrowser.

Its then copied to PC and opened straight in Photoshop CS2, Where I played with levels, curves and Gaussian Blur on the Nebulae itself.

Yes there is coma introduced by the Lumicon OAG's focal reducer - it was alot worse but reseating this lens a bit more square in the tube reduced what was at first terrible coma. I suspect this focal reducer isn't quite perfectly seated.

There are no darks, flats or bias removed from this shot. So I handled vignetting by being very aggressive with levels - even at a individual colour channel level.

Then I finally play with colour balance because unless I shift everything very red - alot of the reds are a weird shade of gray - trouble is this shift everything red - I am not trying to lasso the gray and only shift that to red.

Will post some interim steps (cut down shots tonight to highlight what I mean).

Thanks guys,

Matt
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