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Galactic Gems Glisten in New Gallery From NASA's Chandra

Chandra_901d_1024

chandra_901d August 25th, 2026

Credit: X-ray: NASA/CXC/SAO; Optical: NASA/ESA/STScI; Infrared: NASA/ESA/CSA/STScI; Image Processing: NASA/CXC/SAO/L. Frattare

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2026/galaxies/

Curator: Chandra X-ray Observatory, Cambridge, MA, USA

Image Use Policy: http://chandra.harvard.edu/photo/image_use.html

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Image Details

Image Type: Observation
Object Name: NGC 4258

Distance

Universescale2

25,000,000 light years

Chandra_901d_128

Position Details

Position (ICRS): RA = 2h 19m 0.0s; DEC = 47° 17’ 60.0”
Orientation: North is 23.5° CW
Field of View: 9.3 x 7.8 arcminutes
Constellation: Andromeda

Color Mapping

	Telescope	Spectral Band	Wavelength
	Chandra (ACIS)	Ultraviolet (X-ray)	826.7 pm
	Hubble	Optical	-
	Webb	X-ray	-

Spectrum_xray1

Pseudocolor

Chandra_901d_1280

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ID: 901d
Subject Category
Subject Name: NGC 4258
Credits: X-ray: NASA/CXC/SAO; Optical: NASA/ESA/STScI; Infrared: NASA/ESA/CSA/STScI; Image Processing: NASA/CXC/SAO/L. Frattare

Release Date: 2026-08-25
Lightyears: 25,000,000
Redshift: 25,000,000
Reference Url: http://chandra.harvard.edu/photo/2026/galaxies/

Type: Observation
Image Quality: Good
Distance Notes

Facility: Chandra X-ray Observatory, Hubble Space Telescope, James Webb Space Telescope
Instrument: ACIS, -, -
Color Assignment: Pseudocolor, Pseudocolor, Purple

Band: Ultraviolet, Optical, X-ray
Bandpass: X-ray
Central Wavelength: 0.8267

Start Time: 2000-04-17-10:51:41, -, -
Integration Time: 41910, -, -
Dataset ID: 350, 1618, 2340
Notes

Coordinate Frame: ICRS
Equinox: J2000
Reference Value: 34.75, 47.3
Reference Dimension: 2400.0, 2001.0

Reference Pixel: 1171.38179988, 924.639098668
Scale: -6.491285e-05, 6.491285e-05
Rotation: -23.4888991136
Coordinate System Projection:: TAN

Quality: Position
FITS Header
Notes: World Coordinate System resolved using PinpointWCS 0.9.0 revision 213+ by the Chandra X-ray Center

Creator (Curator): Chandra X-ray Observatory
URL: http://chandra.harvard.edu
Name
Email: cxcpub@cfa.harvard.edu

Telephone: 617.496.7941
Address: 60 Garden St.
City: Cambridge
State/Province: MA

Postal Code: 02138
Country: USA
Rights: http://chandra.harvard.edu/photo/image_use.html

Publisher: Chandra X-ray Center
Publisher ID: chandra
Resource ID: ngc4258.tif

Resource URL: http://chandra.harvard.edu/photo/2026/galaxies/galaxies.tif
Related Resources

Metadata Date: 2026-08-26
Metadata Version: 1.2

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Detailed color mapping information coming soon...

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Universescalefull

25,000,000 light years

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NASA’s Universe of Learning materials are based upon work supported by NASA under cooperative agreement award number NNX16AC65A to the Space Telescope Science Institute, working in partnership with Caltech/IPAC, Center for Astrophysics | Harvard & Smithsonian, and NASA Jet Propulsion Laboratory. The award is part of NASA’s Science Activation program, which strives to further enable NASA science experts and content into the learning environment more effectively and efficiently with learners of all ages.