Chris,
That is a fantastic image.
I tried again from Chelmsford, UK at 51.5N. Conditions were much worse even though the comet was higher in the sky. The sky was quite milky and much brighter than it was yesterday. I did pick up the comet as a star-like object but no sign of the tail today. I measured a magnitude of -1.3 (at Jan 12.41) in a 40 arcsec diameter aperture using Mercury and Vega as references and applying an extinction correction depending on the airmass. I will only have detected the very brightest core of the coma.
My daytime images from the last two days are:
That will be my last daytime image. I hope the comet survives and puts on a nice show in the evening sky for those down south.
Nick James. BAA.
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On 12/01/2025 20:07, Chris Schur via groups.io wrote:
C/2024 G3 Atlas from Arizona at near noon daytime.? January 12 starting at 10:44am MST ( 5:44 PM UTC), 10" f/3.9 Newtonian, 250 exposures each 0.03s combined onto? image in stack.? ASI083, Payson,AZ.
The comet was 5 degrees from the Sun, and I used a special baffle tube system to block the sun from entering the tube.? the nucleus of the comet is singular, stellar and not breaking up as far as I can see.
Clear Skies, Chris Schur Schur's Web Portal:
