Difference between revisions of "2 Micron All Sky Survey - 2MASS"

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2MASS is an all sky survey that used both northern and southern hemisphere telescopes to cover the whole sky from 1997 through 2001 with a final post processing release in 2003.  
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'''2MASS''' the '''2 Micron All Sky Survey''' is an all sky survey in the 2 micron range that used both northern and southern hemisphere 1.3 meter telescopes to cover the whole sky from 1997 through 2001 with a final post processing release in 2003.  
  
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According to wikipedia, the goals of 2MASS were to look into the areas of the Milky way hidden in visible light, to look for brown dwarfs and low mass stars and to create a catalog of all of the galaxies and stars 2MASS could detect.
  
  
[[File:2 Mass north.jpg|200px|thumb|left|2MASS North Mt. Hopkins and M57 from IPAC image gallery]][[File:2 Mass south.jpg|200px|thumb|right|2MASS South Cerro Tololo CTIO Chili  from IPAC image gallery]]
 
  
'''[http://skynet.unc.edu/promptcam/ Click here to see a live webcam pointed at 2MASS south via SKYNET remote network.]'''
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[[File:2 Mass north.jpg|300px|thumb|left|2MASS North Mt. Hopkins and M57 from IPAC image gallery]][[File:2 Mass south.jpg|400px|thumb|right|2MASS South Cerro Tololo CTIO Chili  from IPAC image gallery]]
  
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'''[http://skynet.unc.edu/promptcam/ Click here to see a live webcam pointed at 2MASS south via SKYNET remote network.]''' <BR><BR>
  
Wavelengths around 2 microns, J (1.25 um), H (1.65 um), and Ks (2.17 um) in the Near Infrared (NIR) were used in this survey which produced over 500 million sources in the point source catalog and 1.6 million sources in the extended source catalog (I don't know what this means yet:) These catalogs are publicly available.
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*wavelengths J (1.25 um), H (1.65 um), and Ks (2.17 um) in the Near Infrared (NIR)
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*over 500 million sources in the point source catalog
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*1.6 million sources in the extended source catalog which were resolved
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*catalogs publicly available.
  
Probabley better in bullet form.
 
  
Add pics of actual scopes.
 
  
Add where it fits with other scopes and what it is typically used for???
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'''[http://www.ipac.caltech.edu/2mass/overview/about2mass.html  There is a lot more info here at the IPAC 2MASS page]'''
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But I have not read through it all and I '''still''' don't know why its '''J, H, K''' which is '''not''' the order of the alphabet and it really bugs me!
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'''[http://www.ipac.caltech.edu/2mass/gallery/pow.html  2MASS Picture of the Week]'''
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[[File:2 Mass POW Orion.jpg|400px|thumb|center| Orion - Atlas Image courtesy of 2MASS/UMass/IPAC-Caltech/NASA/NSF]]
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There is a really nice image out there somewhere that shows where 2MASS falls on the spectrum that I will try to find.

Latest revision as of 00:17, 18 January 2013

2MASS the 2 Micron All Sky Survey is an all sky survey in the 2 micron range that used both northern and southern hemisphere 1.3 meter telescopes to cover the whole sky from 1997 through 2001 with a final post processing release in 2003.

According to wikipedia, the goals of 2MASS were to look into the areas of the Milky way hidden in visible light, to look for brown dwarfs and low mass stars and to create a catalog of all of the galaxies and stars 2MASS could detect.


2MASS North Mt. Hopkins and M57 from IPAC image gallery
2MASS South Cerro Tololo CTIO Chili from IPAC image gallery

Click here to see a live webcam pointed at 2MASS south via SKYNET remote network.

  • wavelengths J (1.25 um), H (1.65 um), and Ks (2.17 um) in the Near Infrared (NIR)
  • over 500 million sources in the point source catalog
  • 1.6 million sources in the extended source catalog which were resolved
  • catalogs publicly available.


There is a lot more info here at the IPAC 2MASS page

But I have not read through it all and I still don't know why its J, H, K which is not the order of the alphabet and it really bugs me!


2MASS Picture of the Week

Orion - Atlas Image courtesy of 2MASS/UMass/IPAC-Caltech/NASA/NSF

There is a really nice image out there somewhere that shows where 2MASS falls on the spectrum that I will try to find.