Old Lace

Nrao_nrao_gallery151_1024

nrao_NRAO_Gallery151  

Credit: B. Saxton, NRAO/AUI/NSF using data provided by T. Rector, NOAO/AURA/NSF

In this combined optical and radio image, the faint galaxy in the constellation Triangulum looks like lace hanging in the sky. Also known as M33, the Triangulum Galaxy is part of the Local Group of galaxies, which includes the Andromeda Galaxy and our galaxy, the Milky Way. M33 is over thirty thousand light years across, and more than two million light years away. The optical data in this image (white) show the many stars within the galaxy as well as reddish star forming regions that are filled with hot Hydrogen gas. The radio data (colored pink) from the Very Large Array (VLA) reveal the cool Hydrogen gas within the galaxy, gas which cannot be seen with an optical telescope. Combined together, the radio and optical give a more comprehensive view of star formation in this galaxy.

Image Source: https://public.nrao.edu/gallery/old-lace/

Curator: NRAO/AUI/NSF, Charlottesville, Virginia, USA

Image Use Policy: Creative Commons Attribution 3.0 Unported license (http://creativecommons.org/licenses/by/3.0/)

Image Details

Image Type
Observation
Object Name
Triangulum Galaxy M33
Subject - Local Universe
Galaxy > Type > Spiral

Distance

Universescale2
2,723,000 light years
Nrao_nrao_gallery151_128
 

Position Details

Position (ICRS)
RA = 1h 33m 50.9s
DEC = 30° 39’ 35.8”
Orientation
North is up
Field of View
2.0 x 2.0 degrees
Constellation
Triangulum

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_blue UK Schmidt Optical (B) 500.0 nm
Arrow_left_red UK Schmidt Optical (R) 667.0 nm
Arrow_left_green UK Schmidt Optical (V) 577.0 nm
Arrow_left_red VLA Radio (L) 211.0 mm
Arrow_left_blue VLA Radio (L) 211.0 mm
Spectrum_ir2
Arrow_top_blue
Arrow_top_red
Arrow_top_green
Arrow_top_red
Arrow_top_blue
Nrao_nrao_gallery151_1280
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ID
NRAO_Gallery151
Subject Category
C.5.1.1  
Subject Name
Triangulum Galaxy, M33
Credits
B. Saxton, NRAO/AUI/NSF using data provided by T. Rector, NOAO/AURA/NSF
Release Date
Lightyears
2.723E+06
Redshift
2.723E+06
Reference Url
https://public.nrao.edu/gallery/old-lace/
Type
Observation
Image Quality
Good
Distance Notes
Facility
UK Schmidt, UK Schmidt, UK Schmidt, VLA, VLA
Instrument
Color Assignment
Blue, Red, Green, Red, Blue
Band
Optical, Optical, Optical, Radio, Radio
Bandpass
B, R, V, L, L
Central Wavelength
500, 667, 577, 2.11E+08, 2.11E+08
Start Time
2012-04-25T16:35:43-04:00, 2012-04-25T16:35:52-04:00, 2012-04-25T16:35:33-04:00, 1998-06-11T16:56:02.1, 1998-05-11T01:05:51.6
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
23.46210000000, 30.65994200000
Reference Dimension
2048, 2048
Reference Pixel
1023.47417655856, 1025.72495964168
Scale
-0.00097502366, 0.00097502366
Rotation
-0.04206174262
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
World Coordinate System resolved using PinpointWCS 0.9.2 revision 218+ by the Chandra X-ray Center
Creator (Curator)
NRAO/AUI/NSF
URL
https://public.nrao.edu
Name
NRAO/AUI/NSF
Email
outreach@nrao.edu
Telephone
Address
520 Edgemont Road
City
Charlottesville
State/Province
Virginia
Publisher
NRAO/AUI/NSF
Publisher ID
nrao
Resource ID
Metadata Date
2018-04-12T19:14:19+00:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
2,723,000 light years