File:A Lonely Spiral in a Tapestry of Galaxies (iotw2035a).tiff

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Captions

Captions

This stunning image features NGC 3198, a galaxy that lies about 47 million light-years away in the constellation Ursa Major. This image was taken with the Mosaic instrument on the 4-meter Nicholas U.

Summary[edit]

Description
English: This stunning image features NGC 3198, a galaxy that lies about 47 million light-years away in the constellation Ursa Major. This image was taken with the Mosaic instrument on the 4-meter Nicholas U. Mayall Telescope at Kitt Peak National Observatory, a Program of NSF’s NOIRLab, and shows the full extent of the galaxy, from the bright central bulge to the tenuous outer reaches of the tightly-wound spiral arms. Almost all the objects lurking in the background are galaxies or galaxy clusters — a sea of distant galaxies of all shapes, sizes, and orientations.Accurately measuring the distance to an astronomical object — everything from our own Sun to galaxies such as NGC 3198 — is an age-old challenge for astronomers, and requires a combination of measurements and methods. The galaxy at the heart of this image has played a part in this astronomical undertaking by allowing astronomers to calibrate astronomical distance measurements based on a type of variable star known as a Cepheid variable.
Date 26 August 2020, 10:02 (upload date)
Source A Lonely Spiral in a Tapestry of Galaxies
Author

KPNO/NOIRLab/NSF/AURA.  Acknowledgments: . 

PI: M T. Patterson (New Mexico State University) .
Image processing: Travis Rector (University of Alaska Anchorage), Mahdi Zamani & Davide de Martin
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current08:59, 26 July 2023Thumbnail for version as of 08:59, 26 July 20233,168 × 2,485 (45.08 MB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2035a.tif via Commons:Spacemedia

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