Thread: Are flats really required?
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Old 14-06-2023, 10:21 AM
RugbyRene (Rene)
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Join Date: May 2015
Location: Sydney
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Are flats really required?
Hi all,

I've heard that flats are required to fix vignetting and dust donuts. The thing is, with the system I have (SW 100ED + 2-inch filters + ZWO2600MC) I don't have any vignetting and I keep my optical train clean so there's no obvious dust donuts.

So, having said that is there any need for flats?

Rene
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