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Observation of our star: sept 2 and 3

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#1 JeanB

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Posted 05 September 2012 - 10:43 AM

Hi everyone,

I had some time last Sunday and Monday to observe our sun both in white light and H alpha. The sun put up a great show during these two days. Many proeminences and sunspots could be observed during hours.

On sept 2 I started my observation session at approx 13:00 with my LuntLS60. Even though I concentrated on proeminence for my sketch, I noticed two bright white flares on the disk (I think AR1560 was the origin)which appeared at approx 14:00 and lasted for nearly an hour until they faded away. On my sketch you can see these flares on the upper center of the disk.

My sketch in H alpha was done with acrylic paint. This was a lot of fun but also a lot of work and I am not sure I will stick with this technique even though it gives a nice bright image.

Here are my sketches in two separate posts.

Hope you like them.

Jean

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#2 JeanB

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Posted 05 September 2012 - 10:45 AM

Here is my sketch for H alpha observations. Two independant sketches were assembled in one with PS. Acrylic paint on black paper...

Jean

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#3 astronz59

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Posted 05 September 2012 - 02:51 PM

Jean, these are great drawings and observations. Thanks for sharing! :refractor::rollgrin: :choochoo:

#4 Andrev

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Posted 05 September 2012 - 06:47 PM

Very nice sketches my friend. Nice details.

Andre.

#5 Ibmelrod

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Posted 05 September 2012 - 09:39 PM

Very nice work Jean. Was the acrylic done at the eyepiece or from a sketch?

#6 frank5817

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Posted 05 September 2012 - 11:49 PM

Jean,

These are very impressive and beautiful sketches. :bow:
Does everyone in Montreal own a Lunt solar telescope? :lol:

Frank :)

#7 Erix

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Posted 06 September 2012 - 02:21 PM

I take it you did the painting at the eyepiece? I've attempted lunar watercolor at the eyepiece and it was a flop! Love the brightness of the Sun in the painting. It looks very realistic that way (and the color is the hardest thing to get right!). Congrats on such a fantastic set of sketches and paintings!

#8 JeanB

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Posted 07 September 2012 - 10:10 AM

Thanks everyone for your comments :jump:

I take it you did the painting at the eyepiece?


Not entirely Erika. I first used a HB pencil to draw the disk and all the details of the proeminences and major features on the disk. The paint was added as layers on the pencil sketch. I went back to the eyepiece with a small brush to adjust some details.

Frank, considering that Lunt solarsope were back-order for nearly 3 months in Montreal, I would say that some Montrealers jumped into this hobby. :grouphug:

Again I would say that acrylic paint is a nice media to use as for the end result. However, it is hardly practical directly at the eyepiece. The surface texture of the sun is hard to reproduce on a sketch (Roel and André acheived outstanding results). I wanted to have something as close as possible as the view I had with H alpha. I guess next time I could prepare my sketch by painting in advance the solar disk with acrylic and sketch the details with ink pen or other color crayons while at the eyepiece.

Thanks again guys!

Jean

#9 niteskystargazer

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Posted 07 September 2012 - 01:22 PM

Jean,

Nice sketches of out Sun :cool:.

CS,KLU,

:thanx:,

Tom

#10 JeanB

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Posted 10 September 2012 - 02:57 AM

Thank you, Tom!

Jean

#11 Rutilus

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Posted 10 September 2012 - 03:21 PM

Jean - An excellent set of Solar drawings.

#12 raylal

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Posted 21 September 2012 - 03:40 PM

Beautiful work Jean, I must have missed this thread earlier.

Nice job!

Ray

#13 Dennis_S253

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Posted 21 September 2012 - 09:18 PM

Hello Jean, these are some great sketches. May I ask, on the first sketch with the Newton 130/900 and Baader Film. What magnification do you use? Thanks...

#14 JeanB

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Posted 22 September 2012 - 12:07 PM

Thanks Rutilus, Raymond and Dennis!

Dennis, glad you come to pay us a visit in the sketching forum!

My sketch of the whole solar disk with the sunspots was done at 36X and 90X to grab some details.

Jean

#15 Dennis_S253

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Posted 22 September 2012 - 03:05 PM

Thx Jean, yea I've been checking the forum out a few days now. Some very good sketches here. Very good.






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