[AZ-Observing] Re: Comet Animation
- From: Brian Skiff <Brian.Skiff@xxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Mon, 4 Jul 2005 15:16:01 -0700 (MST)
An IAU Circular issued a bit ago notes that observations similar to
the ones being done at Lowell, but by Carl Hergenrother using the 1.5-m
Kuiper telescope in the Catalinas shows the brightening (about 2 magnitudes
in the R band) was confined to the seeing-disc of the pseudo-nucleus
within a few arcsec radius of the center. A good visual comet observer,
Mike Linnolt, reports on the same IAUC, an increase in total brightness
of only ~0.5 mag through the event, going from about 11.2 before to 10.7
afterwards.
The gist of the data indicates that reports of the nucleus going to
mag 9 are incorrect, and suggestions of a substantial change in the total
brightness of the comet, including (ahem) mine, are also overstated.
The action was confined to the immediate nuclear region not much larger
than a star in a telescope.
\Brian
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