NGC 7331

Noirlab_noao-n7331mortfield_1024

noirlab_noao-n7331mortfield May 7th, 2014

Credit: KPNO/NOIRLab/NSF/AURA/Paul Mortfield and Dietmar Kupke/Flynn Haase

NGC 7331 is one of 18 galaxies chosen by the HST Extragalactic Distance Scale Key Project to calibrate secondary distance estimators. The project will use the Hubble Space Telescope to obtain an accurate distance to galaxies via Cepheid variables, with the ultimate goal of using these to measure H0 (a cosmological parameter) to an external accuracy of 10%. It was determined this galaxy is 49 million light years away (and perhaps 30,000 light years across). In this image you will see some of the nearby neighbors being both spiral and elliptical galaxies. Nearby this field (not shown) is another famous group of galaxies known as Stephan's Quintet. This image was taken as part of Advanced Observing Program (AOP) program at Kitt Peak Visitor Center during 2014.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noao-n7331mortfield/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 7331
Noirlab_noao-n7331mortfield_128
 

Position Details

Position (ICRS)
RA = 22h 36m 52.2s
DEC = 34° 27’ 52.8”
Orientation
North is 82.7° CW
Field of View
12.0 x 8.2 arcminutes
Constellation
Pegasus

Color Mapping

  Telescope Spectral Band Wavelength
Luminosity KPNO-VC-0.5m (Other CCD) Optical (Broad Band) 555.0 nm
Blue KPNO-VC-0.5m (Other CCD) Optical (B) 438.0 nm
Green KPNO-VC-0.5m (Other CCD) Optical (G) 475.0 nm
Red KPNO-VC-0.5m (Other CCD) Optical (R) 625.0 nm
Spectrum_base
Luminosity
Blue
Green
Red
Noirlab_noao-n7331mortfield_1280
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ID
noao-n7331mortfield
Subject Category
Subject Name
NGC 7331
Credits
KPNO/NOIRLab/NSF/AURA/Paul Mortfield and Dietmar Kupke/Flynn Haase
Release Date
2014-05-07T06:00:00
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noao-n7331mortfield/
Type
Observation
Image Quality
Distance Notes
Facility
Visitor Center 0.5-meter Telescope, Visitor Center 0.5-meter Telescope, Visitor Center 0.5-meter Telescope, Visitor Center 0.5-meter Telescope
Instrument
Other CCD, Other CCD, Other CCD, Other CCD
Color Assignment
Luminosity, Blue, Green, Red
Band
Optical, Optical, Optical, Optical
Bandpass
Broad Band, B, G, R
Central Wavelength
555, 438, 475, 625
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
339.21736573, 34.4646607254
Reference Dimension
2122.0, 1448.0
Reference Pixel
1680.59710693, 206.02807617
Scale
-9.41414766743e-05, 9.42406874879e-05
Rotation
-82.672704131372
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-n7331mortfield
Metadata Date
2021-08-30T19:44:41+02:00
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.

 

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