File:M25, IC4725 (noao-m25).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file(2,500 × 2,500 pixels, file size: 4.36 MB, MIME type: image/jpeg)

Captions

Captions

It is unclear why M25, a reasonably conspicuous open cluster in the constellation Sagittarius, did not rate an entry in the New General Catalogue and is thus relegated to only an Index Catalogue number.

Summary[edit]

Description
English: It is unclear why M25, a reasonably conspicuous open cluster in the constellation Sagittarius, did not rate an entry in the New General Catalogue and is thus relegated to only an Index Catalogue number. It is a middle-aged cluster at around 90 million years, somewhere around two thousand light-years away and twenty-odd light-years across. This picture is a combination of six frames taken in the BVR pass-bands in June 1996 at the Burrell Schmidt telescope of Case Western Reserve University's Warner and Swasey Observatory located on Kitt Peak, near Tucson, Arizona, during the Research Experiences for Undergraduates (REU) program operated at the Kitt Peak National Observatory and supported by the National Science Foundation. Image size 42.3 arc minutes.
Date 30 June 2020, 21:34:00 (upload date)
Source M25, IC4725
Author Hillary Mathis, Vanessa Harvey, REU program/NOIRLab/NSF/AURA
Other versions

Licensing[edit]

This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible."
To the uploader: You must provide a link (URL) to the original file and the authorship information if available.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current18:11, 17 September 2023Thumbnail for version as of 18:11, 17 September 20232,500 × 2,500 (4.36 MB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/noao-m25.jpg via Commons:Spacemedia

The following page uses this file:

Metadata