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Astrophotography and Sketching >> Sketching

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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
March 18th sun sketch
      #5742032 - 03/18/13 11:17 PM

Hi.

6th sketch in a row what is excellent according to the few sunshine we got. Most have be done in a very small hole in the cloud cover.

As promised, I changed the color around the sunspots.

Andre.



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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: March 18th sun sketch new [Re: Andrev]
      #5742189 - 03/19/13 02:10 AM

Interesting view of the penombra (?) you have a very nice scope to see this André ! The details you reach are uncredible.

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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: March 18th sun sketch new [Re: Aquarellia]
      #5742695 - 03/19/13 11:20 AM

Michel

I draw the sunspots first detuning the filter what give me a similar view as white light in very orange tint with much more detils around the sunspots including the penombra (I don't think is the correct name). Full tuned h-alpha, I don't see them.

Andre


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JeanB
Pooh-Bah


Reged: 07/11/11

Loc: Montreal, Canada
Re: March 18th sun sketch new [Re: Andrev]
      #5742954 - 03/19/13 01:24 PM

André,

your technique is astonishing!



Jean


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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: March 18th sun sketch new [Re: Andrev]
      #5743246 - 03/19/13 03:32 PM

Andre,

Very good sketch of the Sun Mar. 18th. .

CS,KLU,

,

Tom


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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: March 18th sun sketch new [Re: niteskystargazer]
      #5743436 - 03/19/13 04:53 PM

Thanks Jean and Tom.

Andre


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: March 18th sun sketch new [Re: Andrev]
      #5744802 - 03/20/13 10:14 AM

I can only repeat what I post everytime:

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: March 18th sun sketch new [Re: Jef De Wit]
      #5744911 - 03/20/13 11:24 AM

Andre,



Frank


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starsoup
sage


Reged: 06/21/08

Loc: AR
Re: March 18th sun sketch new [Re: frank5817]
      #5745069 - 03/20/13 12:44 PM

My mind was not prepared for this great drawing....Excellent!!

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mikesemmler
sage


Reged: 06/01/09

Re: March 18th sun sketch new [Re: starsoup]
      #5745259 - 03/20/13 02:23 PM

very good job

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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: March 18th sun sketch new [Re: mikesemmler]
      #5745824 - 03/20/13 06:03 PM

Thank you all my old friends but especially to the new ones. Thanks a lot. I invite you to follow my sketch everytime the sun is present here...

Andre.


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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: March 18th sun sketch new [Re: Andrev]
      #5746817 - 03/21/13 02:14 AM

Quote:

penombra (I don't think is the correct name).



It´s penumbra, sorry André.
An interesting info about penumbra, superpenumbra and fibrils, through Halpha is given here :
http://iopscience.iop.org/0004-637X/608/2/1148/fulltext/57687.text.html


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