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NGC 3486

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#1 Dan Crowson

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Posted 12 January 2018 - 03:47 PM

NGC 3486 (UGC 6079, PGC 33166 and others) is a Seyfert 2 barred spiral located approximately 27.4 million light-years away in Leo Minor.

 

MCG+05-26-034 (PGC 33184, VV 515 and others) is the odd, irregular galaxy near the top left.

 

This image seems fairly deep. There’s a bright magnitude 21.05 (B) quasar below and to the left (east) of MCG+05-26-034.

 

Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 12x300s – 60 minutes each – binned 2x2

 

420 minutes total exposure – 7 hours

 

Imaged December 28th, 29th and 30th, 2017 and January 11th, 2018 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.

 

LRGB - https://www.flickr.c...4873621/sizes/l

 

See the link above because the attached image has been down-sampled.

 

NGC%203486%20-%20CN%20-%20LRGB.jpg

Dan


  • jaddbd, mikefulb, jim kuhns and 18 others like this

#2 andysea

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Posted 12 January 2018 - 09:05 PM

I really like this one Dan!

#3 baron555

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Posted 12 January 2018 - 09:18 PM

What's that on the upper left?



#4 rigel123

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Posted 12 January 2018 - 09:28 PM

That is a great shot Dan and one cool galaxy too!



#5 scopenitout

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Posted 12 January 2018 - 10:02 PM

Beautiful. Thank you, Dan!

#6 Destin1701

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Posted 13 January 2018 - 11:38 AM

Beautiful shot Dan, great job!

Destin



#7 BenKolt

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Posted 13 January 2018 - 02:45 PM

That's a really nice image, Dan with lots of interesting background galaxies.  Well done.

 

Ben



#8 Rick J

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Posted 13 January 2018 - 02:55 PM

What's that on the upper left?

Dan told you, "MCG+05-26-034 (PGC 33184, VV 515 and others) is the odd, irregular galaxy near the top left."

 

The VV 515 designation is the most informative entry as the Vorontsov-Velyaminov is a catalog of interacting galaxies so you immediately know this is a mash-up of more than one galaxy just by its catalog entry, three galaxies in this case.  VV catalog link.

 

Rick



#9 Rick J

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Posted 13 January 2018 - 03:44 PM

I wish Dan had pointed out the quasar he mentions.  While the blue magnitude is as he states that is misleading.  Usually, quasars are blue so the blue magnitude is its brightest but when dealing with really distant quasars they are so redshifted green or even red is brighter.  In this case, the green magnitude, where most cameras are most sensitive is 20.6.  It's the great distance to this one along with its unusually high intrinsic brightness that makes this one special.  The universe was only 2 billion years old when the light we see today started its journey to us.  Redshift has a z value of 3.1966.  Very few quasars are within reach of amateur gear at this high redshift.  It is LQAC 165+029 005 for those looking it up.  At its redshift, the light it emitted at say 200 nm well into the ultraviolet spectrum is now at 839nm well into the near infrared spectrum.  This is why this one looks somewhat red rather than blue as you might expect.   In fact, it is so bright in infrared it makes IR catalogs.

 

I've attached a small piece of my image showing the quasar for those wanting to hunt it down.

 

Rick

Attached Thumbnails

  • VV515 and LQAC 165+029 005.JPG


#10 Dan Crowson

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Posted 13 January 2018 - 03:54 PM

Thanks for looking... Thanks Rick.

Dan




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