Light pollution filter - which way is better?

Harris48Pod
10 Apr, 2018 02:50
Hello to anyone who would have an opinion..
I am wanting to buy an Astronomik light pollution filter for use with a CCD refractor and CCD SCT LRGB setup.  Should I get one to replace my L filter when shooting or should I get one to go forward of the filter wheel somewhere?  I am leaning toward getting one to go in front of the filter wheel in the optic train somewhere..
thx
Charles
kajouman
10 Apr, 2018 08:44
i use a Lumicon UHc..its  very good.  with heavy polution..narrowband filters will work better
swag72
10 Apr, 2018 13:24
I use a Chroma LP filter as my luminance in one of the rigs and the other uses a HUTEC IDAS, again as the luminance filter only. I thought long and hard about this and if I'd put the LP filter in the front of the imaging train then it may have had an adverse effect on my Narrown band data collection. I'm happy how it works  smile
Harris48Pod
10 Apr, 2018 23:50
Hello Ms. Wager,
…I love your artistic interpretations of the heavens..I was quite surprised to get to chat with you for a moment in time.. thanks for the guidance.  I will consider it gospel.
Charles
Harris48Pod
11 Apr, 2018 00:36
John
i use a Lumicon UHc..its  very good.  with heavy polution..narrowband filters will work better

Hello John,
I see the difference in some of the same shots you have taken that I have taken.  My pollution is not bad, but I think it is probably borderline.  I guess I am probably considering getting a substitute for the Lum filter at this point unless anyone responds with convincing info to the alternative.  Thanks for the advice.
Charles
Vittorio
11 Apr, 2018 10:59
Hi Charles,
unfortunately I think that you can't have definitive answer to your question. A lot of people use an LP filter between filterwheel and telescope, others use an LP filter just on filterwheel (in place of L filter), other people don't use LP filter.
I know just one thing: everyone has problems!
personally I use an Idas P2 in place of L filter. some friend use Idas between telescope and OAG (so they can have LP reduction on RGB filters) but a lot of thimes they have reflection problems.
Sorry for my english :-)
kajouman
11 Apr, 2018 12:03
Charles Harris
Chroma LP filter

the most of the pictures where done with a different camera…now i have a asi1600mm-c and use the uhc filter…only when i capture mid horizon targets. for zenith..i use the zwo clear glass…im living in a almost dark zone.soo…
Harris48Pod
11 Apr, 2018 17:39
I see..thx.
Harris48Pod
12 Apr, 2018 02:21
Vittorio
Hi Charles,
unfortunately I think that you can't have definitive answer to your question. A lot of people use an LP filter between filterwheel and telescope, others use an LP filter just on filterwheel (in place of L filter), other people don't use LP filter.
I know just one thing: everyone has problems!
personally I use an Idas P2 in place of L filter. some friend use Idas between telescope and OAG (so they can have LP reduction on RGB filters) but a lot of thimes they have reflection problems.
Sorry for my english :-)

Thank you Vittorio.  Very clearly put and valuable to know, I'm sure.  I will try to remember this as I get closer to a decision..I am going to check out all these filters you guys have told me about..
So long,
Charles
 
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