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21 Aug, 2019
By, Wikipedia

File:The Circle Of Light.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:02, 22 June 2023		10,182 × 10,184 (25.13 MB)	C messier	full size
	20:18, 30 January 2023		1,280 × 1,280 (346 KB)	Yiseth Romero	Uploaded a work by CTIO/NOIRLab/NSF/AURA/B. Tafreshi from https://noirlab.edu/public/images/iotw2209a/ with UploadWizard

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Cerro Tololo Inter-American Observatory

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- Cerro Tololo Inter-American Gözlemevi

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Credit/Provider	CTIO/NOIRLab/NSF/AURA/B. Tafreshi
Source	NSF's NOIRLab
Short title	The Circle of Light
Image title	Reality seems to be reversed in this striking Image of the Week. It appears as though the telescopes of the Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab, are growing around the edge of a deep well of stars — or alternatively, as though the night sky is being reflected exceptionally crisply in a perfectly circular pool. This mind-bending effect is achieved by using a specialized camera lens called a fisheye. Fisheye lenses have a bulbous shape, which enables them to capture hemispherical images, but also causes the image to be significantly distorted — something that conventional lenses are designed to avoid. However, that distortion can be used to create striking effects such as the wraparound effect in this image, where the ground appears to have been scooped into a circle. Several of the telescopes housed at CTIO are visible around the edge of this image, including (clockwise from the top): the SMARTS 0.9-meter Telescope, the SMARTS 1.5-meter Telescope, the Víctor M. Blanco 4-meter Telescope, the Curtis Schmidt Telescope, the SMARTS 1.0-meter Telescope and the decommissioned DIMM1 Seeing Monitor.
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	12:00, 2 March 2022
Software used	Adobe Photoshop 22.0 (Windows)
File change date and time	13:21, 21 September 2021
Date and time of digitizing	09:26, 18 July 2015
Date metadata was last modified	06:21, 21 September 2021
Unique ID of original document	xmp.did:0272f11c-9bec-7b4b-b277-27700196398b
Keywords	CTIO
Contact information	https://noirlab.edu 950 North Cherry Ave. Tucson, AZ, 85719 USA
IIM version	4

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