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June 20 sun

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#1 Aquarellia

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Posted 20 June 2018 - 03:35 AM

For the AAVSO solar section  I try to have a Wolf number estimation each day.

Today (June 20 2018 - 7h45 UTC) the number of spot was a good surprise, 18 spots distributed in 3 different groups.  So an estimated Wolf number of 48, this is a first for this year.

 

20180620-t-coul_l.jpg

 

All the groups are very close to the sun's equator meaning that those spots belongs to the previous cycle.  Only two small spots were out of the tropical area, so they are the first ones of the new cycle. that was in the begining of this year.

The interior sketch was made with an objectif filter on a 102mm f10 refractor, the H alpha prom's were sketches with the smalest H alpha Lunt (35mm).  All with HB pen and blending stump on white paper.

 

Hope you will have a clear sky today!

Michel

 

 

 


  • Special Ed, Jef De Wit, niteskystargazer and 6 others like this

#2 Kaikul

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Posted 20 June 2018 - 04:06 AM

Beautiful work as always Michel. I didn't think that there'd be much sunspots these days as I read that we're in or approaching the low cycle. Couldn't really tell. I haven't had much of a clear skies this month. Even on days, the clouds persist.



#3 Susan H

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Posted 20 June 2018 - 04:38 AM

Wow, Michel, such detail! Very nice, very nice indeed. Thank you for sharing. Clear skies. 



#4 niteskystargazer

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Posted 20 June 2018 - 11:55 AM

Michel,

 

Very good sketch of the Sun (On June 20) cool.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#5 frank5817

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Posted 20 June 2018 - 12:25 PM

Michel,

 

Solar sketching doesn't get better than this.

Superb.

 

Frank :)



#6 Special Ed

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Posted 20 June 2018 - 02:19 PM

Yay--sunspots!  Looks good, Michel.  waytogo.gif 



#7 Aquarellia

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Posted 14 July 2018 - 06:03 AM

Thank you for all your good words, always appreciated
A surprise here, have a look at the last AAVSO solar bulletin :

 

https://www.aavso.or..._SB_2018_06.pdf

 

Michel




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