File:Black hole - Messier 87.jpg

File
File history
File usage
Metadata

Original file ‎(7,416 × 4,320 pixels, file size: 2.39 MB, MIME type: image/jpeg)

This file is from a shared repository and may be used by other projects. Please see the file description page for further information.

File history

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

	Date/Time	Thumbnail	Dimensions	User	Comment
current	19:58, 17 April 2019		7,416 × 4,320 (2.39 MB)	commons>Colin	Taken from https://www.eso.org/public/archives/images/original/eso1907a.tif 16-bit original. Converted to 8-bit with dithering using Photoshop 2019. Saved as JPG with maximum level 12 quality. This file is smaller than previous one because the previous one had noise or extreme dithering which does not compress well.

File usage

There are no pages that use this file.

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Credit/Provider	EHT Collaboration
Source	European Southern Observatory
Short title	First Image of a Black Hole
Image title	The Event Horizon Telescope (EHT) — a planet-scale array of eight ground-based radio telescopes forged through international collaboration — was designed to capture images of a black hole. In coordinated press conferences across the globe, EHT researchers revealed that they succeeded, unveiling the first direct visual evidence of the supermassive black hole in the centre of Messier 87 and its shadow. The shadow of a black hole seen here is the closest we can come to an image of the black hole itself, a completely dark object from which light cannot escape. The black hole’s boundary — the event horizon from which the EHT takes its name — is around 2.5 times smaller than the shadow it casts and measures just under 40 billion km across. While this may sound large, this ring is only about 40 microarcseconds across — equivalent to measuring the length of a credit card on the surface of the Moon. Although the telescopes making up the EHT are not physically connected, they are able to synchronize their recorded data with atomic clocks — hydrogen masers — which precisely time their observations. These observations were collected at a wavelength of 1.3 mm during a 2017 global campaign. Each telescope of the EHT produced enormous amounts of data – roughly 350 terabytes per day – which was stored on high-performance helium-filled hard drives. These data were flown to highly specialised supercomputers — known as correlators — at the Max Planck Institute for Radio Astronomy and MIT Haystack Observatory to be combined. They were then painstakingly converted into an image using novel computational tools developed by the collaboration.
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	15:07, 10 April 2019
Width	7,416 px
Height	4,320 px
Bits per component	8 8 8
Compression scheme	Deflate (Adobe)
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CC 2019 (Windows)
File change date and time	20:16, 17 April 2019
Color space	sRGB
Date and time of digitizing	19:06, 7 March 2019
Date metadata was last modified	21:16, 17 April 2019
Unique ID of original document	xmp.did:3162f4f9-7f2c-6344-9ea6-4f18ca9d79a7
Keywords	M87* Messier 87
Contact information	https://www.eso.org Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany
IIM version	4

File:Black hole - Messier 87.jpg

File history

File usage

Metadata

Navigation menu

Search