The Coronado PST is a fantastic and relatively affordable way to view the sun in the hydrogen alpha spectrum of light. The Coronado PST has the following specifications:
Aperture: 40mm, F/L: 400mm, F/Ratio: F/10, Bandwidth: <1.0A - <0.6A, Thermal Stability: 0.005 A/C, Blocking: Full blocking >10-5 from EUV to far IR
The Coronado PST will show solar prominences, solar filaments, active regions and other details visible in the H-Alpha spectrum of light. I have observed the sun through regular white light solar filters, and while the view through white light solar filters is very interesting and enjoyable, the views of the sun using the Coronado PST in Hydrogen Alpha light will blow your socks off.
I first saw the sun in Hydrogen Alpha at the house of astrophotographer Jack Newton. When I looked into the telescope and saw the sun in the hydrogen alpha spectrum my mouth dropped open. It had to be the most amazing view of a celestial object I had ever seen. I look forward to getting plenty of use out of my Coronado Personal Solar Telescope.