M100
noirlab_noao-m100kingbig February 24th, 2014
Credit: KPNO/NOIRLab/NSF/AURA/Curt and Sally King/Adam Block
This spiral galaxy currently holds a unique distinction in that it is one of the furthest galaxies in which Cepheid variables have been detected. These special variable stars have a specific relationship between their period of variation and brightness. Astronomers measure the periods of these stars to learn how bright they are. By knowing how bright the star truly is and how bright it appears, astronomers can measure their distance from Earth. In general galaxies are so far away even the best telescopes in the world cannot resolve individual stars. However in some of our nearby galactic neighbors it is possible. From these measurements M100 is estimated to be 56 million light years away. 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-m100kingbig/
Curator: NSF's NOIRLab, Tucson, AZ, USA
Image Use Policy: Creative Commons Attribution 4.0 International License
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Full Size Image
(2184 x 1472)
Source TIFF (3.38 MB)
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- 320 x 215 (26.4 KB)
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Image Details
Position Details
Color Mapping
| Telescope | Spectral Band | Wavelength | |
|---|---|---|---|
|
Visitor Center 0.4-meter Telescope (Other CCD) | Optical (Broad Band) | 555.0 nm |
|
Visitor Center 0.4-meter Telescope (Other CCD) | Optical (B) | 438.0 nm |
|
Visitor Center 0.4-meter Telescope (Other CCD) | Optical (G) | 475.0 nm |
|
Visitor Center 0.4-meter Telescope (Other CCD) | Optical (R) | 625.0 nm |
- ID
- noao-m100kingbig
- Subject Category
- Subject Name
- M100
- Credits
- KPNO/NOIRLab/NSF/AURA/Curt and Sally King/Adam Block
- Release Date
- 2014-02-24T09:01:50
- Lightyears
- Redshift
- Reference Url
- https://noirlab.edu/public/images/noao-m100kingbig/
- Type
- Observation
- Image Quality
- Distance Notes
- Facility
- Visitor Center 0.4-meter Telescope, Visitor Center 0.4-meter Telescope, Visitor Center 0.4-meter Telescope, Visitor Center 0.4-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
- 185.646052884, 15.8457738096
- Reference Dimension
- 2184.0, 1472.0
- Reference Pixel
- 357.108781815, 748.596992493
- Scale
- -0.000109540828554, 0.00010948912355
- Rotation
- 166.84793940307
- Coordinate System Projection:
- TAN
- Quality
- Full
- FITS Header
- Notes
- Creator (Curator)
- NSF's NOIRLab
- URL
- https://noirlab.edu
- Name
- 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-m100kingbig
- Resource URL
- http://noirlab.edu/public/media/archives/images/original/noao-m100kingbig.tif
- Related Resources
- Metadata Date
- 2021-09-14T08:42:40-05:00
- Metadata Version
- 1.1
Detailed color mapping information coming soon...
