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12/12/2000
- Finder scope and eyepiece arrived today! I also went to Charlie's
and put on the first coat of varnish. Lookin sweet. It may need
as many as 3 coats.
Problem: Time. I hope the spider and secondary arrive soon! Need
them to determine balance point not to mention collimation which
will be tricky anyway. I should determine focuser position.
OK, focal length=47
Subtract from that half tube diameter 3.5", tube thickness
.5", focuser ht. 3" eyepiece 1" so about 39"
from surface of mirror.
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Pads glued on to
mirror cell |
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12/14/2000 - Today
I glued 3 furniture foot pads to the cell, then put 3 blobs of silicone
adhesive on the cell in the countersunk holes I made, and placed
the mirror on top!
I was worried about having too much clearance between support posts
and glass, but when raised up on the pads, this doesn't appear to
be an issue really. Just have to be careful next step not to get
the adhesive on the mirror surface! Varnishing just about done.
Still have to seal sides of bottom panel and prime/seal back of
side bearings. Looks good! Now if only the spider and secondary
would arrive...!
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The Heart of the
'scope--the completed mirror cell |
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12/16/2000 - Tomorrow
I need to get: 2 small bolts ~3/4" long for finder scope; 2
nice sturdy handles. Also want to touch up with varnish. I need
that spider! Note: Order ahead of time from University Optics!
I put the side blobs of glue in the mirror cell. Had to clamp another
caulk tip on the glue gun cuz the hole was too big. I was a little
afraid the glue would get on the mirror surface but it didn't. Hope
those pads won't absorb too much moisture. Should be OK. Tomorrow,
well maybe Sunday I will attach finder scope! When mirror dries
(Sunday) I can also determine focuser position. Getting down to
the wire here!
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In this view you can clearly see the blobs of glue holding the mirror
in place, and the springs on the three push bolts (under the posts). |