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M 82, No Cigar, a Beautiful Galaxy

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#1 frank5817

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Posted 16 March 2009 - 11:52 PM


This northern hemisphere bright galaxy (magnitude 8.4) is one of the showpiece island universes of Ursa Major. At 11-12 million light years from us, M 82 which is also known as NGC 3034 clearly shows its central starburst activity with obscuring dust at the eyepiece of moderate to large telescopes. This galaxy is a member of the M81 group of galaxies and is just slightly more than one moon diameter away from this galaxy.
Both M 81 and M 82 were discovered by Johann E. Bode late in 1774 and just 6 years and 1month later Charles Messier added M 82 to his well known catalog.
In 1963 astronomers Sandage and Lynds published a paper describing M 82 as a strong radio source. In infrared this galaxy is very bright. The galaxy was once thought to be an irregular shaped galaxy but is now known to have two normal spiral arms and a central bar visible in near infrared.
I look forward to spring each year to be able to observe this galaxy at culmination on a moonless night.

Sketching:

Date and Time: 3-15-2009, 2:20-3:10 UT
Scope: 10” f/5.7 Dobsonian. 24 mm eyepiece 60x
8”x12” white sketching paper, 2H, HB, 4H graphite pencils,
blending stump, scanned and inverted
Seeing: Pickering 8/10
Transparency: Average 3/5
Faintest stars visible overhead 4.2
Temperature: 0°C (32°F)


Frank McCabe :)

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#2 JayinUT

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Posted 17 March 2009 - 07:35 AM

Frank,

Wonderful sketch of M82. I believe you've captured it as I see it when I observe it. I also like your capture of the star field around it also.

#3 CarlosEH

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Posted 17 March 2009 - 11:42 AM

Frank,

An excellent observation of M82. You have captured the dark central bar very nicely. Thank you for sharing it with us all.

Carlos

#4 rolandlinda3

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Posted 17 March 2009 - 12:04 PM

Great sketch and always a fun object to go for. Wish you could slip by Frank and see this beauty in color then sketch it using astro video. It is quite a sight. Roland

#5 frank5817

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Posted 17 March 2009 - 12:19 PM

Jay, Carlos and Roland,

Thank you for your nice comments on my sketch.:thanx: With my poor skies I can see more detail in M82 than I see in M81.
---
Roland,

You just need to sketch it in color and show us how it looks. I'll be very happy to see your sketch and everyone here too.

Frank :)

#6 Tommy5

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Posted 17 March 2009 - 08:02 PM

Very cool galaxy sketch, your becoming a dso observor, soon you will be cursing moonlight lol, i forget that spring is galaxy season as i am bathed in lp from chicago.

#7 rolandlinda3

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Posted 17 March 2009 - 08:28 PM

OK, Frank...but it would be more fun to do it with you.

2007 color sketch of M82 and Orion Arm

Roland

#8 frank5817

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Posted 17 March 2009 - 09:44 PM

Tommy5 and Roland,

Thanks guys. :thanx:
---
T5,
The DSO and Deep Sky Sketchers will not get much competition from me until I move to darker skies and practice some better techniques. The moon never pollutes my sky. I get excited when it enters the sky and I can observe it.
---
Roland,

Now that I see it I remember this sketch of M 82 you created. It is beautiful. The distances that seperate us prevent easy gathering to sketch together. I have met many observers in the area where I live. I know of only 3 observers from my neck of the woods the observe and sketch. One is T5 and one recently moved to upstate New York and the 3rd I have yet to meet. The population of sketchers is not nearly as large as astrophotographers. That is just too bad.

Frank :)

#9 frank5817

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Posted 17 March 2009 - 09:45 PM

Tommy5 and Roland,
---
T5,
The DSO and Deep Sky Sketchers will not get much competition from me until I move to darker skies and practice some better techniques. The moon never pollutes my sky. I get excited when it enters the sky.
---
Roland,

Now that I see it I remember this sketch of M 82. It is beautiful. The distances that seperate us prevent easy gathering to sketch together. I have met many observers in the area where I live. I know of only 3 observers from my neck of the woods the observe and sketch. One is T5 and one recently moved to upstate New York and the 3rd I have yet to meet. The population of sketchers is not nearly as large as astrophotographers. That is just too bad.

Frank :)

#10 markseibold

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Posted 18 March 2009 - 04:42 AM

Frank

A remarkable sketch of M82! :bow: :bow: :bow: I don't know how but you have rendered this image to show a 3-D effect in my screen. The foreground star field seems to hover in front of the galaxy, especially if I angle my screen as if it is a holographic effect.

I long for a dark sky location again. Thanks for sharing and posting this, *also, I cannot imagine viewing a color image live as Roland indicates in his Video feed. I would have a hay-day sketching M82 in color pastels! :cool:

Mark

#11 Tom Machtemes

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Posted 18 March 2009 - 09:47 AM

Frank,

Nice sketch of M-82.

Out last night, hard time see in Blue Island, with all of our light pollution.

:thanx:

Tom

#12 frank5817

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Posted 18 March 2009 - 10:50 AM

Mark amd Tom,

Thank you both for your compliments. :thanx:
...
Mark - Any 3-D effect you detect is just blind luck. I did much erasing and re-sketching to get the galaxy to scan correctly and I still got it too bright. This galaxy is especially stunning from a dark location. The best view I have seen so far was from Kitt Peak last year.
...
Tom- Blue Island? That cannot be any better than Evergreen Park.

Frank :)

#13 NerfMonkey

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Posted 19 March 2009 - 04:34 PM

Did you see the dust lane bisecting M82 as a straight line or a boomerang shape? To me it looks like the dust lane has about a 90° bend in the center and it looks like there's a hint of that in your sketch. Great work, thanks for posting it.

#14 frank5817

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Posted 19 March 2009 - 08:11 PM

Mike,

I could not see it well by direct vision so I drew the shape by averted vision. The dark area cuts across top to bottom in the sketch at an angle with a bend from the center to the bottom. When I use averted vision on faint shapes I draw them as they appear at the eyepiece. Often afterwards I find they don't match the photographic views but to me that does not matter. I do know that it looks different from dark skies with larger aperture. Much more complex in appearance. Oh and thank you. :thanx:

Frank :)






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