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Old 01-04-2010, 10:38 PM
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mithrandir (Andrew)
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Join Date: Jan 2009
Location: Glenhaven
Posts: 4,161
1ponders hit enter first, but here's my version.

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Originally Posted by jet486 View Post
Taken with a GSO 8" RC
the telescope
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and a QSI583WSG.
the CCD camera
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Guided with QSI OAG
Off Axis Guider - a mirror picks up some of the light from the same telescope from a part of the field of view which is not covered by the main camera
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and Orion Star Shoot Autoguider.
a second camera specifically designed for guiding takes the light from the OAG and provides feedback to the mount to keep the telescope pointed in the same direction
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LRGB 100 50 50 50.
refers to how the image was shot as a number of monochrome images. Luminance (unfiltered light or through a clear filter to the keep the focus constant) 100 minutes, Red Green Blue filters 50 minutes each
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Darks, flats and biases applied.
correction images to remove known problems with the camera and uneven illumination. No matter how good the gear there are always a few imperfections.
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Processed in CCD stack
put the individual monochrome images together and adjust the positioning so they all match
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and Photoshop CS3.
adjusting the brightness range and colour balance.
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Please excuse my ignorance but could someone explain what the above information means in relation to the image of the week.
It is a bit much for the uninitiated.
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