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Re: [APML]: Lunar Occultation of Aldebaran
> From: rwhigham@mindspring.com (Russell Whigham)
> Just after Sunset (at my location) on March 4, Albebaran will be occulted by
> the first quarter Moon. I'd like to capture the event (just before the
> occultation), but I'm aware of (1) the differences in brightness of the
> Earthshine and the first magnitude star, (2) point source with an extended
> object, (3) an acceptable image scale, and (4) the relatively bright sky.
>
> I'm considering using my C-11 with a f/5.6 telecompressor. Has anyone
> already worked out a film and exposure time?
Last October I used a real time CCD to record the occultation of the
nearly full moon and Aldebaran. This star was bright enough that
when I had a good exposure value for the bright limb of the moon. .
.the star was also visible on the monitor.
For your case I bet that any exposure that's good enough to show the
first quarter moon's bright limb with a proper exposure will also
show Aldebaran. . .and if that doesn't work, expose longer (like 5-15
seconds) to get the earthshine (dark) part of the moon to show on the
negative. . .and Aldebaran will certainly show.
Good luck!
Tom Krajci
Capt Tom Krajci
B-52 Intelligence Officer
"In God we trust, all others we monitor!"
http://spur.barksdale.af.mil