[BAA Comets] ISON Nov 16 and Afrho
Giannantonio Milani
milani.giannantonio at tiscali.it
Tue Nov 19 19:55:40 GMT 2013
Dear All,
I am a bit late but I add my report for saturday morning (Nov 16). I
eventually could observe both comet Lovejoy and ISON. Of course the main
target was ISON.
I took several R CCD images as well as I made some trials in RGB.
Visually (20x80 binoculars) I could easily see ISON in twilight with a
faint 30' tail. A visual estimate with the Sidgwick in-out method gave
me a total magnitude of 5.4-5.4 with different pairs of ref. stars. I
then measured the G-CCD images, that we can assume to be close to the
visual passband, and I got a total magnitude 5.5-5.6 with two difererent
reference stars. I was impressed to find the same value I estimated
visually.
Unfortunately here weather was bad in the following days. I am going to
try again in the next mornings hoping in some clearings, but weather
forecasts are not too encouraging.
I enclose the last Afrho plot with the two outburtsts made with the
contribution of CARA observers, with a great efforts from Francoise and
Erik.
Let's hope that ISON continues to surprise us! It is very exiting indeed.
Giannantonio
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