Observation by Duncan Hale-Sutton: Venus (phase observation only)

Uploaded by

Duncan Hale-Sutton

Observer

Duncan Hale-Sutton

Observed

2024 Dec 14 - 17:10

Uploaded

2024 Dec 14 - 18:57

Objects

Venus

Equipment

Celestron NexStar 102 SLT
9mm orthoscopic eyepiece

Location

Neatishead, Norfolk

Target name

Venus

Title

Venus (phase observation only)

About this image

I don't have the equipment to be able to see surface features on Venus so I thought I would just try to make a drawing of how the phase appeared to me. It seems that according to the phase in the BAA handbook Venus should have looked more gibbous than the way I have drawn it. The BAA handbook value on this date was about 0.631. I have measured the distance along the equator to the terminator as 18mm on my diagram and the diameter is 32mm and so this gives a phase of 18/32 = 0.563. This is also the ratio of the illuminated area to the total area (I will write about why in my blog at some point). The difference between this and the BAA handbook value is 0.068 and is probably explained by the Schroter effect.

Files associated with this observation

20241214_184503.jpg (548.3 kB)

Like this image

Honor Wheeler, Paul Whitmarsh, Andy Wilson

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.

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.