Viewing the sun question
Joe S. wrote:
I have two scopes -- ETX-90 GOTO and XT-8 Dob. I have an Orion solar filter
for each scope -- these are described in the Orion catalog as "full-aperture
glass solar filter."
Today I tried viewing the sun with the ETX-90. I set up and aligned the
scope, put the end caps on the finder scope and put the solar filter on the
scope. Then, I found the sun in the Autostar controller (it's listed under
"Asteroids") and told the scope to GOTO. It did -- but -- looking through
the scope, I could not see anything -- tried focusing back and forth but
really could not tell that I was seeing anything.
What am I looking for?
A big round ball - well, as big around as the full moon. Often the sun
is a naked eye object during the day grin, so the goto is not needed.
Some people find a "shadow finder" useful - something to cast a shadow
on a mark on a screen that indicates the tube is pointed at the sun -
you can make one out of a small cardboard box and tape. Alternatively
you could make a solar filter for your finderscope as well. BTW, I'd
tape on the filters so there's no chance of accidental dislodgement.
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