: I have a Celestron G-3 (90mm) and I'm looking for a good Nebula(r) filter. I live in the city, but I have a great view of Orion and would love to be able to see more of it. Any suggestions would be helpful. : Thanks.

I bought a C-90 18 years ago, along with a nebula filter (light pollution filter). I had better results by driving just ten miles out of town than I did using the filter. If you are going to use it in the city, you'd be better off with the Lumicon UHC filter than the standard "nebula" or Deep Sky (Lumicon's).

The best thing about the C-90 is its portability. Make use of it. Save the money you'd spend on the filter and buy petrol to drive to darker skies.

BTW, the Telescope Warehouse has unmounted 42mm Lumicon Deep Sky filters for $25. You can take one to an eyeglass lens grinder had have it ground to a size that will fit a smaller filter holder, or just rig up a way to use it. You can also hold it in your fingers just above the eyepiece if you want.

• Re: Nebula Filters - tj/">tj - February 7, 2000 - 23:11 UTC
  • Re: Nebula Filters - Chaz/">Chaz - February 8, 2000 - 06:29 UTC
  • Telescope Warehouse and other links - Ed Slocomb - February 8, 2000 - 21:14 UTC
    • Re: Telescope Warehouse and other links - stephen_stringer/">stephen stringer - February 17, 2000 - 19:35 UTC