Comet C/2025 A6 (Lemmon) from Flagstaff, Arizona

Image Title: Comet C/2025 A6 (Lemmon)

Copyright: Drew Evans

Date image was taken: October 23, 2025

Location: Flagstaff, Arizona USA

Data Acquisition Method: Personal Telescope Setup

Description and Details: Comet C/2025 A6 (Lemmon)
(full resolution - https://www.astrobin.com/jhb0rk/)

I spent just under an hour on this beautiful non-periodic comet the other evening. Now located in the constellation of Serpens, low in the western sky after sunset.
Comet Lemmon has an inbound orbital period of about 1,350 years and will pass perihelion (closest point to the Sun) on November 8. Its closest approach to Earth was on October 21 at a distance of approximately 56 million miles. This was undoubtedly one of the more photogenic comets I have imaged, and thankfully able to view with the naked eye here over new moon in Northern Arizona.

Imaging Specifications
OTA: Sharpstar SCA260
Mount: iOptron CEM120
Camera: ZWO ASI2400MC Pro
Gain: 100
Cooling Temperature: -10 degrees celsius
30s x 80 = 40 minutes
(no filters used)
Auto-guiding: ZWO ASI174MM Mini and ZWO OAG-L
Auto-focusing: ZWO EAF
Control: ZWO ASIAIR Plus

Calibrated in Pixinsight (WBPP) with flats, darks and dark flats. Processed in Pixinsight.
Imaged from Flagstaff, Arizona in class 2 Bortle skies - https://NAZObservatory.com

Name: Drew Evans

Website or Facebook Profile: http://nazobservatory.com