[Richard Bosman]

The Baader Long pass goes from 600nm -1200 nm and beyond.
This is good, but a filter that would be short-band, for example 130 nm might be better.
But I have no experience with this because I do not have them.
The camera you want to use is very important to observe methane rays.
This must be very sensitive between 600-750nm. The ZWO Camera ASI 224 MC Color is unfortunately an RGB camera but is sensitive in that area. Profit can be achieved in the right camera.
https://www.astroshop.eu/cameras/zwo-camera-asi-224-mc-color/p,48570

[Richard Bosman]

Thank you so much for your detailed report.

A graph of Baader longpass
https://images-na.ssl-images-amazon.com/images/I/619B1vTIkeL._SL1000_.jpg

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