Glass Solar Filters Aluminum Cell Size:64mm / 2.50" either—anywhere from 50-65mm will work

either—anywhere from 50-65mm will work well

The IDAS production criteria for filters are as follows

Hydrogen Alpha (Hα) solar telescopes are specialized instruments used to observe the Sun in a specific wavelength of light—656

This is the standard stainless steel counterweight included with HyperStar lenses for fork-mounted telescopes

H-alpha fully multicoated Lens design (doublet

Glass Solar Filters Aluminum Cell Size:64mm / 2.50" either—anywhere from 50-65mm will workThese full aperture Solar Filters, are safe glass solar filters that allows as much of the light through as possible through the telescope safely. This allows your telescopes full aperture to be viewed, giving you the best daytime viewing possible with minimal atmospheric instability. When there is instability, you put a mask over the filters end that will reduce the aperture effectively. There is an aluminum cell with this premium solar filter that