Observation by Steve Knight: Gegenschein?

Uploaded by

Steve Knight

Observer

Steve Knight

Observed

2025 Sep 22 - 21:28

Uploaded

2025 Sep 25 - 03:46

Objects

Gegenschein

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Constellation

Cetus

Field centre

RA: 00^h09^m
Dec: -07°03'
Position angle: -20°43'

Field size

38° × 26°

Equipment

Canon 6D Mark I
Astrotrac
50mm f/1.4 lens

Exposure

5 sec, ISO1600

Location

Chipping Norton

Target name

Gegenschein

Title

Gegenschein?

About this image

A reprocess of the geostationary satellites passing through the Earth's shadow image. Is the lighter patch in the centre of the shadow Gegenschein? It's the right size in the right place but you can see the light pollution and banding I was fighting. It is always good to be sceptical.

Files associated with this observation

Gegenschein.png (9.8 MB)

Like this image

Dominic Ford

Comments

Nick James, 2025 Sep 25 - 06:26 UTC

Interesting, but I doubt it. Much more likely to be inexact flat fielding or gradient correction of a vignetted image. I've never managed to convincingly image the gegenschein even from La Palma.

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