Observation by Michael Buechner, Frank Niebling : 3I Atlas with tail 9th Nov

Uploaded by

Michael Buechner

Observer

Michael Buechner, Frank Niebling

Observed

2025 Nov 09 - 05:06

Uploaded

2025 Nov 09 - 13:19

Objects

0003I

Planetarium overlay

Enable overlay
Show stars
Label stars
Show deep sky objects
Label deep sky objects
Show constellation boundaries
Show constellation sticks
Show constellation labels
Show RA/Dec grid

Constellation

Virgo

Field centre

RA: 13^h04^m
Dec: -05°22'
Position angle: -4°16'

Field size

1°07' × 1°30'

Equipment

TEC 140 f/7 with AP 0.72x Quad Telecompressor f=5
ASI 6200MM; Baader filter L,R,G,B
ASKAR 60/300 , QHY 367 C
ASA DM 60 , Remote controlled

Exposure

ASI 5x180 S, QHY: 5x180s

Location

PixelSkiesAstro, Remote, Spain

Target name

3I Atlas

Title

3I Atlas with tail 9th Nov

About this image

Interstellar Comet 3I Atlas at 09.11.2025 shows nice tail structures Despite interference from moonlight (82 % illuminated) and a small height of around 9 to 12 degrees a try on comet 3I Atlas. The picture is heavily processed to show the antitail and the "smoking" tail. Combination of a picture series with 2 telescopes, piggyback mounted and tracked on comet: TEC 140 at f5 and ASI 6200MM, 5x180s L Askar 300

Files associated with this observation

Frank-Niebling-20251109_3Iatlas_asi_u_qhy2a_1762691235_lg.jpg (581.2 kB)

Like this image

Duncan Hale-Sutton, Dominic Ford

Comments

Nick James, 2025 Nov 09 - 16:10 UTC

That's an amazing image! Much deeper than any other that I have seen and it shows extraordinary detail. Can you confirm the field of view of a single panel please so that we can compare this with other images. The platesolver on this site has a solution and I think it is correct for the top panel but that would make the tail over half a degree long. Is that correct?

Michael Buechner, 2025 Nov 09 - 17:59 UTC

Hi Nick, I did a measurement with Tycho Tracker: Mv: 9m.8 , Coma: 3.6', Tail: 30' PA 294

BR Michael

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.