With galaxy season starting I was wondering if there are any filters that would help me get around the light pollution (red zone) I have from my back yard.
I am imaging with an Edge 8” with reducer, ASI1600 mono, ZWO filter wheel with Baader LRGB filters.
I have the possibility of placing a 2” filter in my imaging train, but will any filter really help? I have been trying to find information on the subject but most of what I have found concerns filters for OSC.
I need some advice before I spend money on something that does not help. Any recommendations?
I too image from a Red Zone. Recommendation, which is the same for OSC or mono plus filters. Forget LP filters for galaxies. They work by ripping out chunks of the spectrum. That can work some on emission nebulae, which emit mostly in specific areas of the spectrum. For galaxies, you lose too much data.
You are doing gradient reduction in processing? That's effective because it identifies light pollution by spatial variation, not spectrum. It works on all targets, all sources of light pollution.
Bottom line. Pretty much all serious imagers use gradient reduction, some will add a LP filter, some won't. Some will add one only for emission nebulae.
I pretty much don't, on anything. I am experimenting with a very mild neodymium filter as an L filter, does a bit of good on emission nebula (not galaxies), doesn't remove much data.
Edited by bobzeq25, 20 March 2019 - 09:48 AM.