British Astronomical Association

Supporting amateur astronomers since 1890


Gallery

Observers

Objects

Sky map

Histogram

FAQs

Search

Observation by Nick James: C/2023 A3

Uploaded by

Nick James

Observer

Nick James

Observed

2024 Oct 19 - 18:29

Uploaded

2024 Oct 20 - 15:54

Objects

C/2023 A3 (Tsuchinshan-ATLAS)

Planetarium overlay









Constellation

Ophiuchus

Field centre

RA: 16h24m
Dec: +02°37'
Position angle: +1°57'

Field size

3°09' × 2°10'

Equipment
  • 72mm, f/4.8 refr. + ASI294MC
Exposure

24x60s

Location

Chelmsford, UK

Target name

C/2023 A3 (Tsuchinshan-ATLAS)

Title

C/2023 A3

About this image

C/2023 A3 is a very dusty comet and most of what we are seeing is solar reflection from the dust in the tail, coma and anti-tail. This colour image shows some evidence for green gas emission at the front of the coma but this is weak and overwhelmed by the dust reflection. There is no sign yet of the blue ion tail since this is superimposed on the dust. We should start to see that as our viewing orientation changes.

This image has been generated using an iterative stacking approach which separates the comet and starfield so that each can be stacked separately. This avoids the star trails that would result otherwise and results in a more photogenic image.

 

Files associated with this observation
Like this image
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.

© British Astronomical Association 2024

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.

The BAA image gallery was designed and
built by Dominic Ford.

Image gallery software © Dominic Ford 2020–2024