The 12" Telescope Mirror
I had my 12" mirror re-aluminised
in readiness for the Pluto occultation (June 13, 2006). It looked OK on the
normal front-on view in the scope. However, against the light - all was
revealed, severe deterioration after 5 years. The mirror is always covered
when not in use. Curious the deterioration is greatest around the outer
edge. This time round it has been quartz overcoated. SM
The 12" Mirror
Part
1 Part 2 Part 3 Part 4 Cameras and lenses
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