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I tried around 13:30 UT (14:30 local) with 10x50's also using a roof as a shield. A lot of moisture in the air and passing clouds. Didn't see anything and would make it fainter that -4 mag. If weather

With high confidence we believe we observed?C/2024 G3 mid-morning naked eye? using? the roof of our house? to block the sun? and than using a polarizing filter than a Svbony IR pass 685nm

Hi all, Someone from Saji Observatory reported a possible fragment 4.5 arcseconds south of C/2024 G3, detected with a 103 cm telescope. Can somebody confirm?

I was processing some FITS images and I saw additional tail in C3 Orange filter, which is really faint in images taken without any filters. Is it ordinary tail or a sodium tail?Best regards(I have

The magnitudes I see this morning definitely mean that a visual daytime sighting today will be impossible. Since the maximum should happen over the coming 48 hours the question will be if it reaches

Nick, that's an excellent image and I very much trust the brightness estimates from you and Qicheng. Don Pettit's beautiful image from space might not be appropriate to compare the brightness of

The version on Reddit https://www.reddit.com/r/space/comments/1hxz4vd/comet_atlas_c2024g3_from_international_space/ had more dynamic; I could get

I also just took a very quick look at the short exposure (minimally saturated) LASCO C3 data as well from Jan 11 ~12 UT. It's not possible to isolate the brightness of the coma alone, as that's <1 px

Hi All: Here's Don Pettit's image from January 9th at 12:59 UT. Clearly the comet was far, far brighter at that time than Mercury (mv -0.4) to its lower left. --Rob

That's consistent with my initial crude estimate this morning of -0.5 (measured against Mercury earlier at a similar airmass). The comet's easy visibility is because its coma is so compact, giving it

Maik, Good luck tomorrow. I know you are very experienced but be careful. I'm only risking a camera, not my eyes! I've processed the full video now and the result is here:

Nick, this is really great, great images, thank you. I might try it visually tomorrow as we have sunny skies predicted. Should gain maybe 2 mag in the next 24-48 hours. Maik -- "One cannot discover

Sorry, forgot to include details. The image was taken at 1432 UTC on 2025-01-11. At that time both comet and sun were 10 deg above my horizon. Nick.

I've just managed to image C/2024 G3 (ATLAS) in daylight from Chelmsford, UK (latitude 51.5N) using a 90mm refractor and an ASI1600 camera. The attached image is a differenced stack of two lots of

Hi Adrien/all I reported astrometry of this comet on 2024112 from MPC Code I81 Tarbatness,however on investigation by Hirohisa Sato of the Comet Section of Oriental Astronomical Association (OAA) it

Hi all, CBET 5492 reports on the likely desintegration of P/2024 S2 (Rankin) www.cbat.eps.harvard.edu/iau/cbet/005400/CBET005492.txt . Adrien

If it sticks to 7.1 + 11.7 log r it will be around -2. It is likely to be within a magnitude of that. Regards, Jonathan Shanklin BAA Comet Section visual observations co-ordinator

That would be awesome!

Hi Terry -- I put in a request to Don to see if he can provide a raw image or images for photometry... --Rob

Rob, COBS is a good source of info on comet magnitudes: https://cobs.si/ As Terry says, the latest ground based observations have it around zero. Having the raw files from Don would be great if