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Solar Prom Sketch 16 April 09

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#1 Special Ed

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Posted 16 April 2009 - 12:23 PM

Hi Folks,

It's been a while since I've posted anything here--this is my first opportunity to do any Daystar gazing in quite some time--but I see many fine images and sketches posted as usual. :cool:

I was able to see and sketch the large prom on the NE limb--it had a faint extension that I estimated was 4 or 5 Earth diameters out into space--very impressive. The prom changed rapidly. I put the seeing at 3.0 on the Wilson Scale.

There were also 2 other large proms at about position angle 120° and 2 small surge type proms at ~PA 55°.

Hope you can get out and see the Sun today. :)

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#2 Jim Rosenstock

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Posted 16 April 2009 - 12:34 PM

I saw that one!!! :jump:

Great rendering!

Jim

#3 Tom and Beth

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Posted 16 April 2009 - 01:11 PM

NICE sketch! I too have been lax lately, some of it do to the wind we've having.

Did get a chance today to view, the edge of the Sun looked like it was swimming.

#4 juergens

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Posted 16 April 2009 - 01:23 PM

Excellent sketch!

Many wunderful proms all around the limb!

CS
Matthias

#5 Ralph Marantino

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Posted 16 April 2009 - 01:36 PM

Great job.

#6 Special Ed

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Posted 16 April 2009 - 02:09 PM

Thanks, everyone. :) Jim, glad you got to see that prom, too. I was fortunate to be able to sketch--I had to contend with a breeze that kept blowing cumulus clouds across the Sun and also affected the seeing--I got a late start and that also affects seeing conditions.

I took another look at 1800 UT and the seeing was much worse--maybe 1.5 Wilson--sort of what Tom and Beth describe. The bright scimitar shaped part of the prom had faded and the whole prom was fainter.

#7 marktownley

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Posted 16 April 2009 - 03:38 PM

Nice sketch! :D

Clear skies are predicted for the UK this weekend so hopefully should be getting some views myself then.

#8 brianb11213

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Posted 16 April 2009 - 03:56 PM

Clear skies are predicted for the UK this weekend

If they're anything like the "clear sky" we've officially had here today you'll likely be disappointed ... lots of stratocumulus and a fairly thick cirrosctratus/thin altostratus blanket which has shown the Sun at times but seriously interfered with observation. Unfortunately my understaning is that the weather we have here is what's heading your way in the next two or three days.

#9 markseibold

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Posted 16 April 2009 - 05:37 PM

Michael

Very nice sketchwork. :bow: :bow: :bow: You have prompted me to set up my h-alpha and take a look!

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#10 Special Ed

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Posted 16 April 2009 - 07:02 PM

Thanks, guys! I agree that clouds definitely interfere with visual observations--even a light cloud cover can have an impact. The seeing is also a major limiting factor--it's probably best to try and look early in the morning, even if the Sun hasn't gained very much altitude.






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