[AZ-Observing] Quick look at gamma Vir in the Lowell Clark
- From: Brian Skiff <Brian.Skiff@xxxxxxxxxx>
- To: amastro@xxxxxxxxxxxxxxx
- Date: Wed, 26 May 2004 22:07:38 -0700 (MST)
I took advantage of a lull between tourist groups this evening
(May 25/26) to check on gamma Vir in the Lowell Clark. I was helped
by the Clark 'friend' John DeDecker of the Lowell tour staff. With an
approaching deformation zone or weak trough, the seeing was about 1".5,
mainly expressed in the smaller apertures as very jumpy Airy discs.
We viewed at several small apertures down to the minimum of the iris,
which is 15cm = 6-inches. The eyepiece was a 22mm Panoptic, which with the
long focal length of the refractor (9776mm) gives nominally 445x.
In the smallest aperture, gamma Vir was merely elongated in what's
termed a 'breadloaf'. With better seeing I would expect it to appear
as a figure-8 at the separation that was mentioned in the recent 'amastro'
post. At 20cm/8-inches the Airy discs were just touching as expected.
By the time we worked up to 30cm/12-inches, the image blur was too
washed out to see much of anything.
\Brian
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