Quote:
Originally Posted by Miaplacidus
The PST created the market in cheap H-alpha. The early ones had problems with "rust" forming over time on the front lens, which apparently affected viewing quality but not, I understand, safety. (Please correct me someone, if I am wrong on this important subject.) The newer ones don't have this problem, but watch out if you are buying second hand.
Brian
|
Hi,
A good friend Jan Timmermans from the Netherlands had a PST muddy
lens replaced under warranty, even though he wasn't the original owner.
They honoured the warranty and gave him a new PST!
see here:
http://www.thefirmament.nl/astro/mai...tro/pst.html&2
Steve