Say,if you have never seen the Horsehead Nebula or California Nebula, here is the only LPC filter that can make that happen.
I have mostly 2" EP now, and this fine 1-1/4" Lumicon H-Beta filter needs to be back under the stars. It is in the original blue Lumicon padded plastic box, and lab tested at 95% transmission at 486nm (that's good!). The filter is absolutely like new, without the slightest scratch or blemish. Costs $100 + shipping from Lumicon, I will mail to you for $75 and pay shipping.
Thanks for checking this out!! Clear skies - Dave
Astronomical Society of Kansas City