Print Page - There are IR filters and IR filters

Title: There are IR filters and IR filters
Post by: Rocket Pooch on Oct 16, 2008, 16:57:31

Hi,

Just to pickup from an observation John made about my filters and LRGB imaging and the question why does John suffer from Blue Bloat (thats in the B of the RGB, nothing to do with anything else).

I checked my IR filters, from Baader and they are IR and UV cutoff, the standard IR cut from astronomik does not have the UV and therefore that would explain the blue bloat.

Apparently you need an Astronomik L filter as an equivilent to the Baader IR/UV filter, apparently this is the one to use for RGB and is included within the RGB filter set.

Chris

Title: Re: There are IR filters and IR filters
Post by: JohnP on Oct 16, 2008, 17:03:41

ummm.. I was using my Astronomik Type II LRGB set so all the L's I took was with the Astronomik L...?

John

Title: Re: There are IR filters and IR filters
Post by: Rocket Pooch on Oct 16, 2008, 21:37:36

ok the scope is shit then :lol:

Title: Re: There are IR filters and IR filters
Post by: Fay on Oct 16, 2008, 21:49:40

Are you saying that L +R L+G L+B should be used at the same time?

Title: Re: There are IR filters and IR filters
Post by: JohnP on Oct 16, 2008, 21:50:26

Quoteok the scope is shit then

Chris - now don't start getting too technical ...! Why don't you post that comment on the WO forum...?

John :-)

Title: Re: There are IR filters and IR filters
Post by: Fay on Oct 16, 2008, 21:52:33

Is Chris saying your images are c...p, John?

Title: Re: There are IR filters and IR filters
Post by: Rocket Pooch on Oct 16, 2008, 23:06:54

ok will do :lol:

Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Rocket Pooch on Oct 16, 2008, 16:57:31