GRB 250702B host galaxy

noirlab_noirlab2531d December 8th, 2025

Credit: International Gemini Observatory/NOIRLab/NSF/AURAImage processing: J. Miller (International Gemini Observatory/NSF NOIRLab), M. Zamani & D. de Martin (NSF NOIRLab)

The faint oval at the center of this image is the host galaxy of GRB 250702B — the longest gamma-ray burst that astronomers have ever observed. This image was taken on 20 July 2025 by the Gemini North telescope, one half of the International Gemini Observatory, funded in part by the U.S. National Science Foundation and operated by NSF NOIRLab. It is the result of over two hours of observation, yet the host galaxy appears extremely faint due to the large amount of dust surrounding it.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noirlab2531d/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type: Observation
Object Name: GRB 250702B

Position Details

Position (ICRS): RA = 18h 58m 45.5s; DEC = -7° 52’ 26.1”
Orientation: North is 0.1° CW
Field of View: 0.2 x 0.2 arcminutes
Constellation: Scutum

Color Mapping

	Telescope	Spectral Band	Wavelength
	Gemini-N (GMOS-N)	Optical (Z)	876.0 nm

ID: noirlab2531d
Subject Category
Subject Name: GRB 250702B
Credits: International Gemini Observatory/NOIRLab/NSF/AURAImage processing: J. Miller (International Gemini Observatory/NSF NOIRLab), M. Zamani & D. de Martin (NSF NOIRLab)

Release Date: 2025-12-08T08:00:00
Lightyears
Redshift
Reference Url: https://noirlab.edu/public/images/noirlab2531d/

Type: Observation
Image Quality
Distance Notes

Facility: Gemini North
Instrument: GMOS-N
Color Assignment: Grayscale

Band: Optical
Bandpass: Z
Central Wavelength: 876

Start Time
Integration Time
Dataset ID: None
Notes

Coordinate Frame: ICRS
Equinox: J2000
Reference Value: 284.6897163097972, -7.873903992185974
Reference Dimension: 984.0, 984.0

Reference Pixel: 492.0, 492.0
Scale: -2.6821176084214544e-06, 2.6821176084214544e-06
Rotation: -0.14000000000000024
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: noirlab2531d

Resource URL: https://storage.noirlab.edu/media/archives/images/original/noirlab2531d.tif
Related Resources

Metadata Date: 2025-12-08T13:19:29.964439
Metadata Version: 1.1

Detailed color mapping information coming soon...

There is no distance meta data in this image.