I just picked up a solar filter for a celestron nexstar 114gt . Maybe I'm just being paranoid, but the thing looks to me like a piece of tin foil stuck on a ring of plastic. I decided to look it up on celestrons website (almost all the way down) and just wanted to get some more opinions before I take the chance of burning my eyeballs out in June.
from celestrons website:
Celestron Solar Filters are made with Baader Astro Solar™ Safety Film. Far superior than any existing glass, Mylar or polymer filters, they lead to brighter, sharper, and higher contrast images. Astro Solar™ Safety Film is clear and homogenous and attains the optical performance of high quality plane-parallel glass filters—it is diffraction limited! Double-sided metal coatings have uniform density and good color balance across the entire field ensuring razor sharp images from edge to edge. Its rating is ND-5 which means that the film transmits 1/100,000 of visible light (.001%) while reflecting (blocking) 99.999%of unwanted light. The film absorbs all ultraviolet rays while coating reflects infrared light rendering both absolutely harmless. For added assurance, Baader Astro Solar™ film has been declared safe for direct solar viewing by the German National Bureau of Standards for eye safety.
Like I said, just wanted to make sure anyone with more experience than I have would approve.