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Old 21-04-2021, 05:47 PM
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Merlin66 (Ken)
Spectroscopy Wizard

Merlin66 is offline
Join Date: Oct 2005
Location: St Leonards, Vic
Posts: 8,329
Full disk flats!!!

OK I need to document the circuitous trail I followed over the last couple of weeks, but I think the end result is positive.
Iíll upload later the images obtained which show ( with some care....) the NR can be removed with flats.
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