M1, NGC 1952, Crab Nebula

Noirlab_noao-crab1_1024

noirlab_noao-crab1 June 30th, 2020

Credit: Jay Gallagher (U. Wisconsin)/WIYN/NOIRLab/NSF

This is a color composite formed from two images of the well-known Crab Nebula, taken on the night of October 27th 1995 with the NOAO/STIS/Tektronix 2048x2048 CCD detector on the 3.5-meter WIYN telescope. At the focal plane of the WIYN, this detector has a sampling scale of 0.2 arc seconds per pixel. This picture shows the full imaging power of the WIYN telescope: the "seeing", or image size, is about 0.6 arc seconds, or about twice the resolution of typical ground-based images. Some shell-like features in the center of the nebula, and the subtle filamentary structure evident throughout the region, are impossible to see in fuzzier (that is, more typical) pictures. Image processing can reveal even more detail. About this object The Crab Nebula was originally given this name due to its resemblance to a crab's claw in an early sketch made in 1855 by Lord Rosse's staff astronomer R.J. Mitchell. It is the remnant of a supernova explosion in the year 1054 A.D., which was recorded in five separate accounts in the Far East, although, oddly, no western observation has survived. The nebula was probably first noticed in 1731 by John Bevis, and it was significant enough to be the first entry in Charles Messier's list of nebulae (compiled to avoid mistaking them for comets). The nebula continues to expand and change the details of its appearance, and this is partly due to the violence of the original explosion. However, the star which exploded left behind a rotating neutron star, which continues to beam energy out into the nebula, as well as flashing with a period of only 33 milliseconds. The details of this energy input are important for our understanding both of neutron stars and of the physical conditions in the nebula, and are revealed in the patterns of filaments, their brightness and colors, and the way they change with time.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noao-crab1/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Crab Nebula M1 NGC 1952
Noirlab_noao-crab1_128
 

Position Details

Position (ICRS)
RA = 5h 34m 30.7s
DEC = 22° 0’ 51.2”
Orientation
North is 0.7° CCW
Field of View
5.3 x 5.3 arcminutes
Constellation
Taurus

Color Mapping

  Telescope Spectral Band Wavelength
Red WIYN-3.5m (Tek2K) Optical (y) 550.0 nm
Cyan WIYN-3.5m (Tek2K) Optical (V) 600.0 nm
Spectrum_base
Red
Cyan
Noirlab_noao-crab1_1280
×
ID
noao-crab1
Subject Category
Subject Name
Crab Nebula, M1, NGC 1952
Credits
Jay Gallagher (U. Wisconsin)/WIYN/NOIRLab/NSF
Release Date
2020-06-30T21:34:05
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noao-crab1/
Type
Observation
Image Quality
Distance Notes
Facility
WIYN 3.5-meter Telescope, WIYN 3.5-meter Telescope
Instrument
Tek2K, Tek2K
Color Assignment
Red, Cyan
Band
Optical, Optical
Bandpass
y, V
Central Wavelength
550, 600
Start Time
Integration Time
Dataset ID
None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
83.6280055039, 22.0142190343
Reference Dimension
2690.0, 2690.0
Reference Pixel
1345.0, 1345.0
Scale
-3.26073594611e-05, 3.26073594611e-05
Rotation
0.73999999999999977
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
noao-crab1
Metadata Date
2021-05-10T12:59:56.934946
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.