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Old 28-08-2018, 12:04 PM
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astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,190
Quote:
Originally Posted by LewisM View Post
Nope, LRGB filters do NOT cut through LP - only Narrow Band (NB) does: Ha, OIII, SII etc. (actually these filter out the LP bandwidths, not "cut through")

Using LRGB filters yu'll suffer the same as with an OSC CCD or DSLR.

BTW, a luminence filter should be perfectly transparent
Appreciated very much Lewis & sorry for my lack in definition on 'cutting through' yes should be 'cut out' ...
& Yes, this Lum Filter is totally transparent, apart from a slight tinge, most likely a coating of protection or anti glare or some sort but yes very transparent !
Geeze, astronomy for this duck - one step forward - two steps backward
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Quote:
Originally Posted by Andy01 View Post
Bob, some LRGB mono users who image under LP have chosen to replace their Lum filter with an IDAS LP filter, which will help a great deal, but not so much with some of the newest LED street lighting.
Cheers Andy I do have a baader uhc-s filter which apparently blocks both sodium & mercury street lighting - I have two streetlights, both within 100mtrs, both being one of each color Being an older suburb, I doubt any LED's will be installed anytime soon, touch-wood
Have only used the uhc-s a few of times, years ago, didnt like it due to star colors being drastically shifted, tho maybe worth more experimentation ?
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Quote:
Originally Posted by RickS View Post
Some RGB filter sets leave a gap to reduce the effect of older style street lighting, but as noted by Andy that doesn't help with new LED street lighting.
Cheers for your confirmation there Rick
BTW, looking forward to your wide fields with ya new kit, man, sheese, that was a dads-day pressy, more like a 2 yr investment for this duck
Kind Rgrds ...

Last edited by astronobob; 29-08-2018 at 11:20 PM.
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