File:Caldwell 68 (50324883851).jpg
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Summary
[edit]DescriptionCaldwell 68 (50324883851).jpg |
Hubble captured this image of the hazy reflection nebula Caldwell 68 using its Wide Field and Planetary Camera 2. Reflection nebulae are star-forming clouds of gas and dust that glow with the energy emitted from a hot, nearby star. The nebulae can glow across various wavelengths of light, but this particular image was captured in the visible range of the electromagnetic spectrum. The star that illuminates Caldwell 68 is known as a T Tauri star — a type of young star whose brightness fluctuates over time. Often, T Tauri stars have circumstellar disks. These debris disks surround some young stars and could develop into solar systems much like our own. The observations used to create this image were part of a survey of nearby T Tauri stars searching for visible circumstellar disks. Caldwell 68, also known as NGC 6729, is located roughly 400 light-years away in the constellation Corona Australis, making it one of the closest star-forming regions to Earth. It is a small part of the larger Corona Australis Molecular Cloud. It was discovered by the German astronomer Johann Friedrich Julius Schmidt in 1861 and has an apparent magnitude of 9.5. The fan-shaped nebula appears to extend out from the star R Coronae Australis (on the right in this Hubble image) toward the star T Coronae Australis (on the left in the image). It also appears near other, larger nebulae known as NGC 6726, NGC 6727, and IC 4812. The best time of year to spot Caldwell 68 is during the late summer in the Northern Hemisphere and late winter in the Southern Hemisphere. It can be seen using a small telescope. Credit: NASA, ESA, and K. Stapelfeldt (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America) For Hubble's Caldwell catalog website and information on how to find these objects in the night sky, visit: <a href="https://www.nasa.gov/content/goddard/hubble-s-caldwell-catalog" rel="noreferrer nofollow">www.nasa.gov/content/goddard/hubble-s-caldwell-catalog</a> |
Date | |
Source | Caldwell 68 |
Author | NASA Hubble Space Telescope |
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This image was originally posted to Flickr by NASA Hubble at https://flickr.com/photos/144614754@N02/50324883851. It was reviewed on 16 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
16 December 2020
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop 21.2 (Macintosh) |
File change date and time | 10:50, 3 September 2020 |
Y and C positioning | Centered |
Exif version | 2.32 |
Date and time of digitizing | 16:18, 27 June 2018 |
Meaning of each component |
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Supported Flashpix version | 1 |
Color space | sRGB |
Bits per component |
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Compression scheme | Uncompressed |
Height | 764 px |
Width | 1,483 px |
Pixel composition | RGB |
Number of components | 3 |
Type of media | Observation |
Date metadata was last modified | 06:50, 3 September 2020 |
Unique ID of original document | xmp.did:96153611-ef9e-4870-9e88-27df7418da25 |