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Ever since I was a young lad Mike I wanted to image forbidden emissions!
To be serious I want to image very dim stuff in some sort of rational way that could be useful to other imagers with far longer focal lengths and higher resolutions.
The really nice thing I can get almost decent data with a full Moon imaging with 3nm filters. You can see the overlap between the two panels as I left a one pixel edge to delineate the two panels. The Full Moon even messes slightly with 3nm NB filters after about eight minute exposures.
Bert
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