easily. While I have had much larger and more expensive scopes, including a great 80mm APO I regret to
this day getting rid of, this has been among my favorites.
I recently picked up the photography bug again and thought I
would attach my little ETX-70at to my Canon XSi (12mp) and see what I
could get the little scope to do. After pulling the scope out and cleaning it
up, I realized the scope has a lot of internal reflective surfaces. The
baffles are all very nice, but they are all shinny plastic, the lenses are not
blacked out, and the rear mirror assembly has lots of shinny chrome and
edges. To make it have better internal contrast, I thought I would tune it
up and have added that information to this document.
Most of the pictures below will show the disassembly, cleaning
and modifications of the scope. The walk through it really designed to
give you and idea how the unit comes apart and goes back together. All of
the mechanisms inside the telescope are very easy to adjust, or repair.
By John Cooney
A few years ago I purchased a used Meade ETX-70AT on
eBay to give me a portable scope. It needed a little repair, so I
cobbled together a document showing what I did incase someone
else could use it. I am so grateful that I did, and that I included my
e-mail address. I have been contacted by someone on every
continent except Antarctica, and have discovered that this
document has been translated into Spanish, French, Korean,
Mandarin and German that I know of. I have had the good fortune
of speaking with so many ETX-60/70/80 owners because of this
guide and Mike's website, Thank you all.
Since that time I have purchases a couple of these units,
including a brand new "floor" model that had the same popped
through focuser rod. All said, this has proved to be one of my
favorite little scopes. The very lightweight nature of the rig allows
you to take it just about anyplace without any reservation. I am
never really worried about the scope getting damaged (relatively
low investment), it is very light, very easy to setup, and it all stores