Very active h-alpha sun (full disk pastel sketch)

[Roel]

This morning everything seemed to be right. The weather was absolutely great, the Sun was more active than I've seen so far this year and the seeing was above average. A good day to try sketching a full-disk h-alpha sun for the first time instead of an isolated prominence. First I made a blank disk with a soft white pastel. I took the sketch outside and filled in all the details I could see through the eyepiece of my 70mm solar telescope with white and black pastel pencils. All regions were very active, especially the middle one: it changed its shape within minutes. Sometimes little bright flare-like brightenings appeared and disappeared 2 minutes later. A wonderful sight! It took me one hour (from 08.00 UT - 09.00 UT) to complete the drawing. I scanned the (black&white) sketch and gave it a reddish color with Photoshop.

Full disk H-alpha zonneschets Roelblog

[Mark at Beaufort]

Roel that is an excellent sketch. Thanks for the thread I am hoping to use the PST today if the clouds clear.

Mark

[MjrTom]

That is an amazingly detailed sketch

Thanks for sharing.

[Beyond_Vision]

Great work as usual Roel. Thanks for sharing it with us

Regards

Kevin

[ollypenrice]

Outstanding work. The colour is majestic, truly perfect, and you have acheived a balance between detail and impression which is the hallmark of true art.

Olly

[RogerTheDodger]

Brilliant sketch, but does anyone else see a smiley face in the pattern?

[astrosphinx]

superb Roel, you have a real talent. Can't say I've seen such an amazing pastel sketch of the sun before

[sheri_barri]

A beautiful sketch as well as scientific! You have an amazing talent. Thank you for sharing.

[ScoobyStoo]

Wow. I thought that was a photograph. Outstanding stuff!