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HA Filter for use with QHY 2" Filter Wheel
The time has come for me to try my hand at narrow band imaging. I plan to start off using an HA filter. I image through a QHY9 with a 2" QHY filter wheel (came with a set of parfocal LRGB filters which seem to do a pretty good job).
I'd be interested to know what HA filter others have successfully used with the QHY filter wheel / camera?
I understand that QHYCCD sells an HA filter that's parfocal with their LRGB filters. Does anyone have experience with this HA filter?
Many thanks
Matt
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