Observation by Nick James: 3I/ATLAS with a RedCat 51

Uploaded by

Nick James

Observer

Nick James

Observed

2025 Jul 24 - 01:18

Uploaded

2025 Jul 24 - 15:08

Objects

0003I

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Constellation

Ophiuchus

Field centre

RA: 17^h14^m
Dec: -17°37'
Position angle: -178°09'

Field size

5°23' × 3°39'

Equipment

51mm, f/4.9 RedCat + ASI2600MC

Exposure

30x60s

Location

La Palma, 2100m

Target name

3I/ATLAS

Title

3I/ATLAS with a RedCat 51

About this image

Here is interstellar comet 3I/ATLAS imaged in 30 minutes using a 51mm aperture. It is a real cometary needle in a haystack full of stars. The main image is the full frame binned by 2 and the inset shows the frames stacked at the comet's offset rate using the latest version of Astrometrica (thanks to Herbert Raab for fixing it so that it works for 3I).

This system has the same aperture as a Seestar 50 so it should be possible to get the comet with that although I had the advantages of a cooled camera and a mountain-top location.

Files associated with this observation

3i_20250724_011849_ndj.jpg (6.9 MB)

Like this image

David Strange, Dr Paul Leyland, Richard Miles, Dominic Ford, Callum Potter

Comments

Callum Potter, 2025 Jul 25 - 21:42 UTC

And a nice catch of M 9 ad Barnard 64

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