Observation by Chris Hooker: Venus nightside on 23rd September

Uploaded by

Chris Hooker

Observer

Chris Hooker

Observed

2023 Sep 23 - 03:20

Uploaded

2023 Sep 23 - 20:33

Objects

Venus

Equipment

Orion Optics (UK) OMC200 Mak-Cass
0.3x re-imaging focal reducer
IR filters (details in image)
ZWO ASI462MC camera

Exposure

200 msec @ F/6

Location

Didcot, Oxfordshire

Target name

Venus

Title

Venus nightside on 23rd September

About this image

Venus' nightside recorded in the near infra-red with a partially-transmitting mask to attenuate the very bright crescent. Venus was just over 30% illuminated and had an angular diameter of 36 arc seconds. The image is a processed stack of 8000 video frames of 0.2 seconds' exposure, an integrated exposure of 26.6 minutes. A comparison map from WinJupos is shown in the same orientation. The dark region at the limb and another towards the north pole are consistent with the reference image. The image suffers from glare near the edge of the mask and noise due to the extreme contrast stretch needed to show the nightside.

Files associated with this observation

Nightside 23 Sep 23.png (168.5 kB)

Like this image

Paul G. Abel, Jeremy Shears, Mr Simon Francis Dawes, Mike Foulkes, Martin Lewis, Steve Knight

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