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Comet C/2025 A6 (Lemmon)

Posted: 7 November 2025

Open: Thursday, 6 November 2025, 1806 MST
Temperature: 79°F
Session: 2107
Conditions: Clear

Equipment:
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
Focal reducer

Camera:
D850 DSLR
iPhone 15 Pro Max

Mounted the D850 DSLR at prime focus + focal reducer.

1816 MST: LX600 ON, StarLock OFF, High Precision OFF.

Focused on the star Vega and locked the telescope mirror.

1820 MST: Wi-Fi ON.

Using SkySafari 7 Pro on the iPhone, slewed the telescope to Comet C/2025 A6 (Lemmon) low in the western sky.

1823 MST: StarLock ON.

Began imaging the comet.

1828 MST: Viewed Comet C/2025 A6 (Lemmon), 12x50 binoculars. The tail appeared to be about 1° long.

1831 MST: Wi-Fi OFF.

1832 MST: The eastern sky was brightening from the rising waning gibbous Moon.

1840 MST: Took this image (slightly cropped) of Comet C/2025 A6 (Lemmon), prime focus + focal reducer, StarLock autoguided, 10 seconds, ISO 5000.

photo

The comet was getting too low in the western sky to image.

1842 MST: StarLock OFF.

Viewed Comet C/2025 A6 (Lemmon), 102X. The coma and tail were nice in the eyepiece.

Viewed Saturn, 102X.

1851 MST: LX600 OFF.

1859 MST: Took this handheld iPhone 15 Pro Max photograph showing Comet C/2025 A6 (Lemmon). It was taken with the Camera app (Night Mode, 10 seconds, 1X lens).

Mouseover or tap on image
Mouseover or tap on image for pointer to comet

Close: Thursday, 6 November 2025, 1903 MST
Temperature: 70°F
Session Length: 0h 57m
Conditions: Clear


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