Wednesday evening, 15 October 2025, I made my first attempt at seeing Comet C/2025 A6 (Lemmon) low in the northwestern sky. Some clouds along the western horizon did not help but at 1850 MST I spotted the comet using 7x50 binoculars. A small coma was visible, but no tail. Took these handheld iPhone 15 Pro Max photos (Night Mode, 3 seconds).

1836 MST (1X lens, clouds but no comet)

1858 MST (2X lens)

Mouseover or tap on image for marker to comet

Thursday evening, 16 October, I did another session with Comet C/2025 A6 (Lemmon). At 1837 MST, I first observed the comet using 7x50 binoculars. The coma was a small faint fuzzy ball, but it was larger and slightly brighter than the previous night. I then began imaging the comet using the iPhone 15 Pro Max and a tripod mounted D850 DSLR with 70-300mm lens. I never picked up the comet with the naked eye, probably due to the fading twilight and some skyglow in the northwestern sky from Casa Grande.

1859 MST (iPhone, Night Mode, 3 seconds, 1X lens)

Mouseover or tap on image for marker to comet

1900 MST (D850, f/4.5, 6 seconds, ISO 5000, FL 70mm)


1903 MST (D850, f/5.6, 3 seconds, ISO 12800, FL 300mm)

The comet's short tail and three satellites are visible in the 300mm photo.

Each upcoming night the comet will get higher and brighter in the sky as it moves southward (as seen looking to the northwest). Its closest approach to the Earth will be on 21 October.

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I have posted my Cataract Surgeries - Astronomer Perspective article.

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