C/2023 P1 (Nishimura) 2023-Sep-09 Mike Olason

A fairly clear morning showed a very condensed comet coma = 6'. Astrometrica calculated magnitudes of G=4.7, 4.6, 4.5 from 10x30 second Green Filter images using aperture diameters of 7', 9' and 11' respectively. Interestingly, the comet was actually a little fainter, about 0.1 magnitudes, compared to yesterday morning when G=4.6, 4.5, 4.4 for the same aperture diameters.

The tail is faintly visible to the upper right of the coma in the orange morning twilight.