Re: [APML] A few more barn door shots

[Roland Roberts <roland@astrofoto.org>]

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>>>>> "Eric" == Eric Z Beard <ericzbeard@yahoo.com> writes:

    Eric> Here's a link to a picture of the mount:
    Eric> http://members.aol.com/IC4703/equipment.html

Nice job---I don't think to old swivel joint was such a monster (even
if a "real" ball joint is more convenient).  The old wooden job looks
like a pretty clever job to me....

    Eric> I have a small finder mounted, but I actually feel better
    Eric> about the alignment when I just sight down the hinges.

Hmmm, why?  Do you have the finder well aligned?  The trick is to
point it at something during the daytime---anything at all, but it
should be as far off in the distance as is practical to avoid
parallax.  Now rotate the hinge.  If the object in the finder cross
hairs stays in the cross hairs (obviously, it rotates), then the
finder is aligned with the hinges.

    Eric> Anybody know of an easy/cheap way to keep dew off the lens
    Eric> while shooting without adding much weight to the setup?

Try blowing on the less with a hairdryer between shots.  The idea is
to gently warm it just a bit, and the dew will stay away for quite
while unless conditions are *really* wet.

regards,

roland
- -- 
		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlenter.com                            6818 Madeline Court
roland@astrofoto.org                           Brooklyn, NY 11220

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