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Double star night sketches

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#1 Aquarellia

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Posted 28 January 2013 - 11:04 AM

I like the idea of peter-nexstar when he sketches double stars, so…
Friday 25th of January, I wanted to test my 102mm refractor on some difficult double stars, Orion was well placed and the lunar libration interesting, but… what is the link between double stars and the moon, we'll see ...
First Rigel, the sixth brightest star in the sky, so blue, spectral class B8, and his girlfriend Rigel B Class B9 faint, the same blue and very poor magnitude 10.4 is very close 9.5” only, quite hidden in the shine of Rigel.
Then I went to Sigma-Orionis
This star is very easy to find (m3.7), close to Alnitak, this I a multiple star, two stars m6.6 and especially for me a faint star near Sigma (m8.8) that’s interesting.
Another multiple star is called Struve 761, the name of an astronomer specializing in double stars. This star (m6.8) is included in the same field as Sigma and is triple, the other two components are very close (m8.4 and m8.6).
This asterism is very nice to catch, try to point your telescope there, during a winter night.
Mr. Struve has his name on a moon crater, but as usual nothing is simple, it is necessary that the lunar libration reveal this limb crater. This was the case tonight.
Struve crater is part of a system of old impact craters flooded by lava.
Struve is 180km in diameter, irregular walls climb up to 1700m. Another crater very close, with a diameter of 100km, is called Russel. Russell was an astronomer and an artist, the circle is complete!
The first sketch is the Rigel's one, Is there any possibility to post multiple sketches ?

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#2 dedo

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Posted 28 January 2013 - 11:08 AM

Niceeee!!! Very very nice :)

#3 Aquarellia

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Posted 28 January 2013 - 11:13 AM

Thanks Andréa
Here the Sigma Ori one :

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#4 Aquarellia

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Posted 28 January 2013 - 11:16 AM

And finaly the Moon one, here (I beg your pardon) to show the night Moon layout I made a photo, but, just manualy I hold my small camera in front of the eyepiece...

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#5 niteskystargazer

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Posted 28 January 2013 - 12:55 PM

Michel,

Very nice sketches :).

CS,KLU,

:thanx:,

Tom

#6 PeterDob

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Posted 28 January 2013 - 01:24 PM

Very nice indeed, Michael! Especially the shadow work on your moon drawing is stunning!

I hope you don't mind, but I'd like to add my own drawing of Sigma ORI since apparently I gave you the inspiration for yours. :flirt: It was made during an (almost) full moon which wasn't that far off, so that's why the background's so blueish and clear. Also the seeing wasn't all that great. But I clearly saw the C star of the system, the A-B star obviously impossible to split visually since only 0,25" apart or something.

Cheers,

Peter

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#7 Andrev

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Posted 28 January 2013 - 02:17 PM

Michel.

Well, I like you new sketches. It's fun to see double or triple stars systems. Your closeup of the moon is fantastic.

Andre.

#8 phily

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Posted 28 January 2013 - 02:49 PM

Nice ones of the doubles. Rigel tends to show up well at smaller magnifications and it is a great sight.

Phil

#9 Chopin

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Posted 28 January 2013 - 03:01 PM

Michel, I love your double star illustrations. The hand technique you use is awesome. Also impressive is the wonderful lunar surface...WOW!

#10 Jef De Wit

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Posted 28 January 2013 - 03:12 PM

Always a pleasure to see your sketches!

#11 Ed D

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Posted 29 January 2013 - 07:59 AM

Nice sketches of the doubles.

Ed D

#12 frank5817

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Posted 30 January 2013 - 12:43 AM

Michel,

Impressive work.

Frank :)

#13 Aquarellia

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Posted 30 January 2013 - 10:26 AM

Thank you all for your nice comments !
Just for fun, I try to present my 2 sketches on an original basis like here, with brush traces.

#14 Rutilus

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Posted 01 February 2013 - 04:39 PM

Great double star sketches.

#15 JimPie

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Posted 02 February 2013 - 11:24 AM

Michel, excellent set of double star sketches -and lunar.

#16 azure1961p

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Posted 02 February 2013 - 08:45 PM

Nice work guys. I love Sigma too and think it allows for imagining it to be a distant solar system, such is the arrangment of stars. The brush stroke showing and defining the painting was a nice artsy touch. Both approaches shown here have merit.

Pete






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