Andrev
Carpal Tunnel
Reged: 02/08/11
Loc: Montreal, Quebec, Canada
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March 18th sun sketch
#5742032 - 03/18/13 11:17 PM
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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
sage
Reged: 10/27/12
Loc: Val d'Issole, Provence, France
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Re: March 18th sun sketch
[Re: Andrev]
#5742189 - 03/19/13 02:10 AM
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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
Carpal Tunnel
Reged: 02/08/11
Loc: Montreal, Quebec, Canada
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Re: March 18th sun sketch
[Re: Aquarellia]
#5742695 - 03/19/13 11:20 AM
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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
scholastic sledgehammer
Reged: 07/11/11
Loc: Montreal, Canada
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Re: March 18th sun sketch
[Re: Andrev]
#5742954 - 03/19/13 01:24 PM
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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
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Re: March 18th sun sketch
[Re: Andrev]
#5743246 - 03/19/13 03:32 PM
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Andre,
Very good sketch of the Sun Mar. 18th.  .
CS,KLU,
 ,
Tom
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Andrev
Carpal Tunnel
Reged: 02/08/11
Loc: Montreal, Quebec, Canada
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Re: March 18th sun sketch
[Re: niteskystargazer]
#5743436 - 03/19/13 04:53 PM
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Thanks Jean and Tom.
Andre
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Jef De Wit
Carpal Tunnel
Reged: 03/06/09
Loc: Hove, Belgium
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Re: March 18th sun sketch
[Re: Andrev]
#5744802 - 03/20/13 10:14 AM
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I can only repeat what I post everytime: 
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frank5817
Postmaster
Reged: 06/13/06
Loc: Illinois
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Re: March 18th sun sketch
[Re: Jef De Wit]
#5744911 - 03/20/13 11:24 AM
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Andre,
Frank 
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starsoup
sage
Reged: 06/21/08
Loc: AR
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Re: March 18th sun sketch
[Re: frank5817]
#5745069 - 03/20/13 12:44 PM
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My mind was not prepared for this great drawing....Excellent!!
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mikesemmler
sage
Reged: 06/01/09
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Re: March 18th sun sketch
[Re: starsoup]
#5745259 - 03/20/13 02:23 PM
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very good job
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Andrev
Carpal Tunnel
Reged: 02/08/11
Loc: Montreal, Quebec, Canada
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Re: March 18th sun sketch
[Re: mikesemmler]
#5745824 - 03/20/13 06:03 PM
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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
sage
Reged: 10/27/12
Loc: Val d'Issole, Provence, France
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Re: March 18th sun sketch
[Re: Andrev]
#5746817 - 03/21/13 02:14 AM
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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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