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Photographer:

Mike Olason

Location of Photo:

Tucson, Arizona

Date/Time of photo:

2024 September 29, 1241UT

Equipment:

50mm f/3.5 Refractor and ST-402ME CCD CAmera

Description:

C/2023 A3 on the morning of 2024 September 29 UT was magnitude G=3.0 as calculated from 12x3 second images in an aperture diameter of 5', yesterday morning the comet was magnitude G=3.4, so an interesting increase in magnitude. Both mornings Astrometrica calculations were made from 12x3 second images in an aperture diameter of 5', the comet was at altitude 8.6 degrees, the Sun was - 8.2/8.3 basically the same altitude below the horizon, the twilight sky was clear both mornings and the same equipment was used. Conclusion is the comet had a nice increase in brightness, which also shows in the images with more debris streaming away from the comet coma on September 29. That is what the images showed from the desert above the Catalina Mountains.