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Thanks Brendan and Humayun for your advice. IŽll start working on it as soon as the weather permits it. But one question:
a flat is what can be done with an evenly illuminated t-shirt. is a dark flat a t-shirt-without-light flat? and what is the difference to a normal dark frame?
Hi Fred,
what is the CHCH-effect? I just moved here two months ago from Melbourne and am quite happy with the backyard in terms light pollution and free view to south and everywhere.
Cheers
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