just a tip about white light observing. I recently bought a small bosma refractor and it had a solar filter included in it.
baader filters are good but have found the bosma filter better. i've never seen granulation with the baader but have with the bosma filter and the umbra is a lot clearer.
not sure what the material is they use as it looks different to the baader filters, the coating is mirror reflective and the sun colour is white when viewed through it. my guess is its letting through slightly more light and thus detail.
if you can find out what it is and get a hold of it, it would be the way to go.
HA is a different story
Last edited by yusufcam; 05-05-2011 at 08:56 AM.
|