Field around GRB 250702B

Noirlab_noirlab2531c_1024

noirlab_noirlab2531c December 8th, 2025

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

The stellar field around the host galaxy of GRB 250702B — the longest gamma-ray burst that astronomers have ever observed. It comprises observations from 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, as well as the U.S. Department of Energy-fabricated Dark Energy Camera, mounted on the NSF Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab. The DECam data were acquired on 3 July 2025. The Gemini North data were acquired on 20 July 2025.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noirlab2531c/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details Image Details

Image Type
Observation
Noirlab_noirlab2531c_128
 

Position Details Position Details

Position (ICRS)
RA = 18h 58m 45.6s
DEC = -7° 52’ 26.3”
Orientation
North is 0.1° CW
Field of View
2.7 x 2.7 arcminutes
Constellation
Scutum

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Red NSF Víctor M. Blanco 4-meter Telescope (DECam) Optical (z) 926.0 nm
Green NSF Víctor M. Blanco 4-meter Telescope (DECam) Optical (i) 784.0 nm
Blue NSF Víctor M. Blanco 4-meter Telescope (DECam) Optical (g) 473.0 nm
Grayscale Gemini-N (GMOS-N) Optical (Z) 876.0 nm
Spectrum_base
Red
Green
Blue
Grayscale
Noirlab_noirlab2531c_1280
×
ID
noirlab2531c
Subject Category
Subject Name
Credits
International Gemini Observatory/CTIO/NOIRLab/DOE/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/noirlab2531c/
Type
Observation
Image Quality
Distance Notes
Facility
NSF Víctor M. Blanco 4-meter Telescope, NSF Víctor M. Blanco 4-meter Telescope, NSF Víctor M. Blanco 4-meter Telescope, Gemini North
Instrument
DECam, DECam, DECam, GMOS-N
Color Assignment
Red, Green, Blue, Grayscale
Band
Optical, Optical, Optical, Optical
Bandpass
z, i, g, Z
Central Wavelength
926, 784, 473, 876
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
284.68990861656465, -7.873985613293357
Reference Dimension
1000.0, 1000.0
Reference Pixel
500.0, 500.0
Scale
-4.463596166194779e-05, 4.463596166194779e-05
Rotation
-0.11999999999999995
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
noirlab2531c
Metadata Date
2025-12-08T13:19:07.969420
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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