[Aavso-photometry] Re Alt-AZ imaging

Jeff Hopkins phxjeff at hposoft.com
Thu Apr 19 17:13:10 EDT 2007


And the closer to the zenith the better the photometry! :-)

Jeff

At 13:16 -0700 04/19/2007, Roland Roberts wrote:
>That's a good point.  But I think you meant "zenith" for where the
>alt-az problem is.  The meridian is not generally a problem only close
>to the zenith.  Of course, the rest of your points are still apropos.  I
>plan to sit down and figure out how the field rotation rate depend on
>zenith distance and what that means when translated into (possibly)
>discrete de-rotator motion.
>
>We may be refinancing the house to finish off some renovation, maybe I
>can convince the comptroller to let me pad the budget and get a nice SC
>on a fork *and* a new dob :-)  If I get the Dob, I might try my hand at
>some imaging with something like a Mead DSI to see how good or bad it
>is.  If it doesn't work, I still got a new Dob....
>
>roland
>
>--
>                        PGP Key ID: 66 BC 3B CD
>Roland B. Roberts, PhD                             RL Enterprises
>roland at rlenter.com                            6818 Madeline Court
>roland at astrofoto.org                           Brooklyn, NY 11220
>
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-- 
Jeff Hopkins
HPO SOFT
Counting Photons
http://www.hposoft.com/Astro/astro.html
Hopkins Phoenix Observatory
7812 West Clayton Drive
Phoenix, Arizona 85033-2439 U.S.A.
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