Observation by Jimmy Fraser: Bright Aurora 12-13 September 2023

Uploaded by

Jimmy Fraser

Observer

Jimmy Fraser

Observed

2023 Sep 13 - 01:34

Uploaded

2023 Sep 13 - 15:26

Objects

Aurora

Equipment

Fuji XT5
Samyang 21mm f/1.4 lens.

Exposure

Exposure 0.6 seconds, ISO 10000 f/1.4

Location

Alness, Scotland.

Target name

Aurora 12-13 September 2023

Title

Bright Aurora 12-13 September 2023

About this image

This was a bright and colourful aurora (in the camera, still grey to my eyes) showed nice ray activity at times. I only observed it after midnight so no information about earlier in the night.

Files associated with this observation

aurora_20230913_0134_jfraser.jpg (948.2 kB)

Like this image

Callum Potter, James Weightman, Philip Masding, Nick Quinn, Martina McGovern, Gerard Cauchi, Duncan Hale-Sutton, Graham Winstanley

Comments

Grant Privett, 2023 Sep 20 - 16:49 UTC

Hi there,

I was struck by the difference in colour between Callum and you. Many DSLRs have an automated white balance as default. I wondered if you use a different setting due to aurora being rather different to day time scenes.

Though, I suppose, the difference could come from differences in the leakages of the RGB Bayer matrices used in the cameras - I recall using a DSLR with an RGB Bayer matrix and taking pictures at 820nm, using only the light leakage in the pixel filters.

Jimmy Fraser, 2024 Oct 12 - 18:50 UTC

Grant, The Fuji XT camera that I use has the usual auto white balance but the colour temperature can be easily set in the menu too. I tend to set it around a colour temp of 3900 + or -, it helps a little bit with my bad light pollution. I really don't fully trust camera auto white balance at night. Fuji still very much like to pay homage to their old film stock. https://fujixweekly.com/2020/08/19/fujifilm-white-balance-shift-what-it-is-how-to-use-it/

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