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M81 with 17.5"

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#1 yann pothier

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Posted 30 January 2009 - 08:40 AM

For my first post on CN forum, here is a sketch to compare with JayinUT (but in a larger scope). This was made with an old 17.5" Coulter scope at 125-274x with a transparent sky (6.3 naked-eye limit in UMi) from a 44°N latitude site in the french alps.

clear skies to you, Yann.

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#2 JakeSaloranta

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Posted 30 January 2009 - 08:58 AM

And two arms! Great sketch Yann. Dont tell me you have started using computer to round up the stars...

#3 cildarith

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Posted 30 January 2009 - 09:03 AM

Magnificent sketch, Yann! Welcome to Cloudy Nights. :bow:

(Love the stars...)

#4 CarlosEH

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Posted 30 January 2009 - 01:22 PM

Yann,

Welcome to the Cloudy Nights Sketching Forum. Your observation of M81 is outstanding. You have captured this galaxy very nicely. We all look forward to your future observations on the forum.

Carlos

#5 Andreas.V

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Posted 31 January 2009 - 12:35 PM

Wow! Thats an really nice sketch! Very, very nice!

#6 frank5817

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Posted 31 January 2009 - 06:24 PM

Yann,

That is a wonderful sketch of M-81 and a great match to the eyepiece appearance at that aperture. :cool: :rainbow: Thank you for joining the sketching forum and bringing this great sketch.

Frank :)

#7 Tommy5

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Posted 01 February 2009 - 12:29 AM

Great sketch, it lets us see the galaxy through a large aperture.

#8 varmint

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Posted 01 February 2009 - 02:00 PM

Woah. I have never seen arms on M81, though the largest scope I've used to look at it is a 12" DOB. Welcome to CN too! Nice sketch.

#9 rodelaet

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Posted 01 February 2009 - 02:14 PM

Hello again Yann!

And Welcome to the forum.


Your fine sketch reminds me of my recent visit in the French Alps (Le Castellard) near Nice.

Nice to have you among us. :cool:

#10 Special Ed

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Posted 01 February 2009 - 10:00 PM

Yann,

Beautiful and impressive sketch. 44.5cm of aperture is impressive too. :cool:

Welcome to CN. :)

#11 yann pothier

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Posted 09 February 2009 - 06:43 AM

Thanks to all.

Jake> the round stars are from the computer generated chart that I printed as a canvas (only faint stars were placed by hand, and on the full res drawing, they are not so round). About the 17.5inch and some other drawings (as an introduction, it is in french), you can take a look at http://www.astrosurf...TML/000072.html for a summer tale and http://www.astrosurf...TML/000242.html for a winter session.

clear skies to all

#12 Macro

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Posted 09 February 2009 - 09:24 AM

I wish I could do that!!!

#13 Vincent Becker

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Posted 09 February 2009 - 09:47 AM

Excellent sketch! 17.5" is quite a big scope :)

#14 markseibold

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Posted 09 February 2009 - 02:13 PM

Welcome to the sketch forum Yann

Beautiful rendering of M81. It's good to see what a large aperture can show from dark skies. I have the smaller cousin to your 17.5" Coulter; as mine is the old Coulter company built in California, 10.1" (1987). I have seen M81 some years ago in 30 and 40 inch Dobsonians in the Oregon desert where the Oregon Star Party is held each summer under very dark skies. Your sktch reminds me of those observations from dark skies years ago.

I look forward to seeing your next sketches,

Mark

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