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Astrophotography and Sketching >> Sketching

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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Double star night sketches
      #5647824 - 01/28/13 11:04 AM Attachment (53 downloads)

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 ?

Edited by Aquarellia (01/28/13 11:13 AM)


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dedo
super member


Reged: 06/04/10

Loc: Italy, Rome
Re: Double star night sketches new [Re: Aquarellia]
      #5647834 - 01/28/13 11:08 AM

Niceeee!!! Very very nice

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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: Double star night sketches new [Re: dedo]
      #5647843 - 01/28/13 11:13 AM Attachment (39 downloads)

Thanks Andréa
Here the Sigma Ori one :

Edited by Aquarellia (01/28/13 11:14 AM)


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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: Double star night sketches new [Re: Aquarellia]
      #5647855 - 01/28/13 11:16 AM Attachment (34 downloads)

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...

Edited by Aquarellia (01/28/13 11:17 AM)


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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Double star night sketches new [Re: Aquarellia]
      #5648102 - 01/28/13 12:55 PM

Michel,

Very nice sketches .

CS,KLU,

,

Tom


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PeterDob
scholastic sledgehammer


Reged: 07/29/05

Loc: Castelnovo ne' Monti, Italy
Re: Double star night sketches new [Re: niteskystargazer]
      #5648170 - 01/28/13 01:24 PM Attachment (29 downloads)

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. 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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Andrev
Post Laureate
*****

Reged: 02/08/11

Loc: Montreal, Quebec, Canada
Re: Double star night sketches new [Re: PeterDob]
      #5648309 - 01/28/13 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.


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phily
sage


Reged: 12/18/04

Loc: Kent, UK
Re: Double star night sketches new [Re: Andrev]
      #5648400 - 01/28/13 02:49 PM

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

Phil


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Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: Double star night sketches new [Re: phily]
      #5648427 - 01/28/13 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!

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Double star night sketches new [Re: Chopin]
      #5648448 - 01/28/13 03:12 PM

Always a pleasure to see your sketches!

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Ed D
Carpal Tunnel
*****

Reged: 04/30/10

Loc: Sunny South Florida
Re: Double star night sketches new [Re: Jef De Wit]
      #5649814 - 01/29/13 07:59 AM

Nice sketches of the doubles.

Ed D


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Double star night sketches new [Re: Ed D]
      #5651477 - 01/30/13 12:43 AM

Michel,

Impressive work.

Frank


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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: Double star night sketches new [Re: frank5817]
      #5651977 - 01/30/13 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.


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Rutilus
Carpal Tunnel


Reged: 12/17/10

Re: Double star night sketches new [Re: Aquarellia]
      #5656718 - 02/01/13 04:39 PM

Great double star sketches.

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JimPie
professor emeritus


Reged: 11/10/07

Loc: S.E.Michigan
Re: Double star night sketches new [Re: Rutilus]
      #5657948 - 02/02/13 11:24 AM

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

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azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Double star night sketches new [Re: JimPie]
      #5658899 - 02/02/13 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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