Where to start with LRGB filters?

[ollypenrice]

Is this post just a sly way of letting us all know how little light pollution you have down there in France?

Nope, just deferring gracefully to Martin's valid correction. Honest!!

Olly

[KyleStoke]

Just to tag a question onto this do you also use LP filters on top of the LRGB filters? or is that a stupid question with them already been filters

[RikM]

Just to tag a question onto this do you also use LP filters on top of the LRGB filters? or is that a stupid question with them already been filters

I do. I have a 2" light pollution filter on the end of my coma corrector, so it is in front of all the other filters (including Ha). Some people use a LP filter in the filter-wheel instead of the L filter and use the RGB filters without an LP filter in front. I think it might depend on the light pollution at your site, which way would give you the best results.

[earth titan]

I use an LP filter in the nose of the filterwheel to good effect. It certainly gives me a better managed image from my town centre location.

[SnakeyJ]

Just a point on the Baader LRGB CCD filters - I believe these block IR wavelengths. The cheaper absortive set is not so fussy, so it's recommended to use these stacked with IR-Cut. Definitely keep an eye out on ABS for s/h filters, wheel and that attik 314L+ or 320 - I've seen a couple go sub £ 700 recently, which almost tempted me in to spending what I haven't got

[badgerchap]

Yeah that slowly dropping price on ABS is what's got me planning this!

Typed inexpertly from my phone