[SJAAboard] our solar scope's H-alpha filter

[Nelsonastro at aol.com]

Daystar scope - "a serious problem waiting to happen."
 
I'm not sure what Rich means - but there was an incident
where a borrower DID NOT put the energy rejection (i.e.
deep red) prefilter in front of the objective first.  The
result was overheating of the etalon filter - and $$ damage.
This is not an issue of possible eye damage.  The etalon
is buried in a metal sleeve and does not self-destruct
into glass shards (like a '60s department store scope
'solar filter').  It's not like a while-light filter that could
blow or be knocked off the front of a telescope.
 
Gluing the red filter with a bit of RTV would totally
eliminate this potential problem from happening
again.
 
But again- maybe there is a documented report of eye
damage from a Daystar filter??? (I didn't find any, Gordon
has been studing H-alpha questions since at least '04,
maybe he has info?)  There are no recalls for Daystar
products from the US Consumer Products Safety
Commission.
 
Steven



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