File:The 28-inch Telescope.jpg
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Summary
[edit]DescriptionThe 28-inch Telescope.jpg |
This is the largest conventional refracting telescope in Britain and 7th largest in the world. The lens has a diameter of 28 inches (72cm). Built by Sir Howard Grubb, the first observations were made in 1893 with an eyepiece giving a magnification of 670 times. The 28-inch telescope replaced a smaller refractor by Merz. The same mount was used but the dome was converted from a drum to an onion shape in order to make room for the larger instrument. The dome was originally made of steel and covered with papier mâché. Today the dome has a fibre-glass cover. The design of the mount and dome enable the telescope to be moved to view almost any part of the sky. The recent addition of a computer-aided guidance system makes it easier to use. |
Date | |
Source |
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Author | Andres Rueda |
Camera location | 51° 28′ 39.91″ N, 0° 00′ 04.15″ W | View this and other nearby images on: OpenStreetMap | 51.477752; -0.001153 |
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Licensing
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This image, originally posted to Flickr, was reviewed on 11 March 2013 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:48, 11 March 2013 | 724 × 1,418 (873 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | Transferred from Flickr by User:Jacopo Werther |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | HTC |
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Camera model | Desire HD |
ISO speed rating | 109 |
Date and time of data generation | 15:46, 4 March 2012 |
Lens focal length | 4.92 mm |
Latitude | 51° 28′ 39.91″ N |
Longitude | 0° 0′ 4.15″ W |
Altitude | 45 meters above sea level |
City shown | Greenwich West Ward |
Width | 3,264 px |
Height | 1,952 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS5 Windows |
File change date and time | 15:46, 4 March 2012 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 15:46, 4 March 2012 |
Meaning of each component |
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Supported Flashpix version | 1 |
Color space | sRGB |
GPS time (atomic clock) | 15:46 |
Geodetic survey data used | WGS-84 |
GPS date | 4 March 2012 |
GPS tag version | 2.2.0.0 |
IIM version | 4 |
Sublocation of city shown | Greenwich |
Province or state shown | England |
Country shown | United Kingdom |
Code for country shown | GBR |
Keywords |
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Date metadata was last modified | 02:48, 14 April 2012 |
Unique ID of original document | xmp.did:31579379B985E111A0DCDF501101C48F |