Light pollution filter

[Supernova74]

Hi guys and girls I would like to talk about light pollution filters in a little detail I currently live in Stoneleigh which is around 10 miles away from central London.if anything to go by my sky bortale rating is 6 not to bad considering so close to central London and on exceptional clear nights able to glimpse the Milky Way however rare!.my main filter I use like the bread and butter of filters is an baader IR-cut moon and sky glow Neodymium filter and generally use all the time just to generally clean things up a little however don,t notice a great difference with or without.the other filter I use is an ES O111 filter which I swear by and is a must for enhancing emission nebula etc especially on the veil in Cygnus and the M27 dumbed nebula stands out better. I do understand that filters are no miracle cure In more light polluted sky’s and sometimes subtle differences is between seeing objects or not at all I currently was advised by a dealer last year to go for an CLS filter which was supposed to enhance viewing on some star clusters and especially galaxies however I sold it after a few nights of observing as was left a little disappointed as if anything I found it made veiwing worse  or was I missing something so I’m looking for any other suggestions for another filter that maybe worth investing in as if there is such a thing would like a better light pollution filter also something to enhance galaxies on.

[John]

Light pollution has been changing over the last few years with the introduction of LED lighting and the phasing out of the older sodium lights.

I believe that the older ones could be filtered to some extent but the newer lighting not so much ?

For galaxies there are no filters that help really. Darker skies are what is required to see them better.

The O-III and UHC filters do help with nebulae. They work even better under dark skies of course but with some light pollution at least something can be seen with them.

 

[RT65CB-SWL]

I too live in Bortle 6 skies and I find the CLS to be ok. Out of interest which brand did you buy? - I have the Explore Scientific one. For viewing fainter objects, averted vision works.