Observation by Nick James: C/2025 A6 (Lemmon) tail motion

Uploaded by

Nick James

Observer

Nick James

Observed

2025 Sep 23 - 03:00

Uploaded

2025 Sep 23 - 06:31

Objects

C/2025 A6

Equipment

ASI6200MM + Celestron HD11

Exposure

7x20x60s

Location

Chelmsford, UK

Target name

C/2025 A6 (Lemmon)

Title

C/2025 A6 (Lemmon) tail motion

About this image

This animation of the gas tail of C/2025 A6 shows motion over a period of just over one hour. A blob of gas is moving down the tail away from the head. Each frame of this animation is 20 minutes long and the stack mid-times are separated by 10 minutes. I have a longer sequence from this morning (almost 2.5 hours) but I'll process that later.

I get a total magnitude of 8.0 this morning.

Files associated with this observation

2025a6_20250923_0300_ndj.gif (4.0 MB)

Like this image

Mike Foulkes, Mazin Younis, Andy Wilson, Nick Quinn, Bill Leatherbarrow, Dawson, Dominic Ford, Steve Knight, Peter Mulligan, James Weightman, Brendan Tynan

Comments

Nick James, 2025 Sep 23 - 20:12 UTC

Here is a longer version of this animation with the satellite trails removed and here is a longer stack processed with a log stretch to show detail in the inner coma.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.