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Thanks Frank
I’m actually surprised there’s no generic table or filter chart relating to emission objects
I guess there’s so many filters types and variations in bandwidths plus varying sky conditions that it would be a monumental task to formulate ( maybe in my spare time ? )
The Astrobin suggestion looks like a good starting point
After a few years at Mono , I suppose experience kicks in like everything else in the hobby
Cheers
Martin
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