Sol - whole disk a week apart (16 Nov & 23 Nov) & partial disk a day apart (22 Nov & 23 Nov)

[vineyard]

Hello,

Here are a couple of whole disks, the first on 16 Nov, the second on 23 Nov.

16 Nov:

23 Nov:

And here are more or less the same part of the disk about 24h apart (22 Nov & 23 Nov)

22 Nov:

23 Nov:

It's interesting seeing how much changes, & how much stays roughly the same.

Cheers,

Vin

[Alan White]

Nice images Vin, thanks for sharing.
As you say, interesting to see the difference over a week,
I wonder is folks have done a daily time lapse or similar when it's been clear enough.
OK, clearly not possible in recent times with all the pesky cloud.
 

[vineyard]

Thanks @Alan White - that's a great idea re the time lapse.  Has anyone ever done an H-alpha analemma over a year?  That would be so cool - maybe something for SGLers in sunnier/desert climes?

[Alan White]

I name I did not recognise, undeducated person that I am.
Looked it up and have learnt something on a cold and damp day.

From the Library of the World AKA Internet:

Definition of analemma

: a plot or graph in the shape of a figure eight that shows the position of the sun in the sky at a given time of day (such as noon) at one specific locale measured throughout the year Affix a camera to a sturdy mount … and take a photo of the Sun at a particular time of day

Edited November 26, 2021 by Alan White
typos of course