Quote:
Originally Posted by multiweb
What filter are you using? Might want to check the transmission graph and also the QE of your camera at the wavelength. Removing the AR window of the camera also makes a notable difference.
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This filter
http://www.antliafilter.com/pd.jsp?id=74#_pp=2_546
I’ve got two cameras for planetary qhy163m and zwo224mc hard to get specs in that part of the spectrum. The zwo should be ok (needs a up/ir filter added for general use) as for the qhy I’m not as confident.