Jerry Black replied to the topic 'CGEM PEC Data Confusion' in the forum. 1 year ago

Thanks for the comment about PECPrep. I'll try that out (through Parallels). On the advice of a more experienced astrophotographer, I had subtracted the linear fit data from my average curve data to de-trend the data before upload. Seeing conditions were poor enough last night, the results were inconclusive.

Where did you find the note about spurious frequencies?

Cheers

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