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Old 20-11-2020, 12:14 PM
blacksun
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blacksun is offline
 
Join Date: Nov 2020
Posts: 1
resurrect ETX90ec with missing viewfinder

Hi Iceinspace,

After maybe 15 years away, I thought I'd resurrect my old Meade ETX90ec Cassegrain (and revisit this site - nice to see you are still here !)

I'm really struggling to remember the alignment procedure, and how to use the
Autostar controller etc - but I figure it will come back to me.

..aside from a lot of dust, and some mystery goo - both rectified pretty easily - the eyepiece is missing from the viewfinder. (photo attached)

..so - does anyone know where I might pickup a replacement - either eyepiece or entire viewfinder - and what I actually need ? ( The OD of the unthreaded ring is about 22.5mm and in ID is 19.5mm - much too small for my 1.25" eyepieces from the main scope. )

..still, even with the lack of a viewfinder, or any kind of alignment, and with quite a bit of cloud/haze, and before it was fully dark - I still managed to show the kids Jupiter, Mars, and Saturn along with the moon last night. Very pleased !


https://i.imgur.com/sSICfPc.jpg?1

https://imgur.com/sSICfPc
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