IMPORTANT! Long time exposures without purpe corner!

Started Oct 19, 2005 | Discussions thread
OP Nordstjernen Veteran Member • Posts: 6,876
In fact this is a quick and efective solution

With this software you can spit the total exposure time into several shorter excposures, i.e. 5 minutes. At the end of the session (or in the middle, if you like) you make just ONE dark frame exposure. This dark frame can be used for ALL the pictures from this session. Really a time saver!

A dark frame is needed to remove noise. It also removes the purple area. Actually, this shows how efective the dark frame noise reduction is.

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