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Old 21-07-2008, 06:35 PM
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anthony.tony
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Join Date: Dec 2006
Location: Canowindra NSW Australia
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Gain control

Quote:
Originally Posted by iceman View Post
Hi tony

I got your email, sorry it took me a while to respond. I'll respond here instead.

The Baader set was generally fine, but I found that the red filter was quite low in transmission and made colour balance quite tricky. Even with full gain, the throughput on all filters seemed lower than it should've been.

When I upgraded to the Astronomiks, the high transmission was immediately noticeable and all channels were brighter. Colour balance was much easier and there was better depth to the data. With the astronomiks, the green channel is brightest, with blue being the dimmest.

As an example, I might have blue at 100% gain, red at 95% gain and green at 90% gain to get approx the same histogram for all channels.
Hello Mike when you are Talking about adjusting the gain.Are you adjusting the gain on your CCD Camera. Tony
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