NGC 4939
noirlab_noao-n4939block April 3rd, 2014
Credit: KPNO/NOIRLab/NSF/AURA/Adam Block
NGC 4939 is a very pretty example of a spiral galaxy. The arms of this galaxy are unusually thin and long. There are many starforming regions dotting the spiral arms- but at a distance of 130 million light years away the majority of them are quite dim. If this galaxy was viewed face-on it would appear nearly circular- not unlike NGC 488. NGC is also considered an active galaxy because its nucleus varies in intensity on relatively short timescales and it has had two recorded supernovae events (back in 1968 and 1973). 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-n4939block/
Curator: NSF's NOIRLab, Tucson, AZ, USA
Image Use Policy: Creative Commons Attribution 4.0 International License
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Full Size Image
(1433 x 1083)
Source TIFF (1.93 MB)
- Additional Sizes (JPG)
- 320 x 241 (26.8 KB)
- 1024 x 773 (124 KB)
- 500 x 377 (40.8 KB)
- 1280 x 967 (179 KB)
Image Details
Position Details
Color Mapping
- ID
- noao-n4939block
- Subject Category
- Subject Name
- NGC 4939
- Credits
- KPNO/NOIRLab/NSF/AURA/Adam Block
- Release Date
- 2014-04-03T12:26:28
- Lightyears
- Redshift
- Reference Url
- https://noirlab.edu/public/images/noao-n4939block/
- 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
- 196.050464668, -10.2945205182
- Reference Dimension
- 1433.0, 1083.0
- Reference Pixel
- 1027.68319702, 461.542228699
- Scale
- -0.000124822057481, 0.000125095009987
- Rotation
- -99.927609674399
- 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-n4939block
- Resource URL
- http://noirlab.edu/public/media/archives/images/original/noao-n4939block.tif
- Related Resources
- Metadata Date
- 2021-09-15T16:06:21-05:00
- Metadata Version
- 1.1
Detailed color mapping information coming soon...
