File:Amateur Astrophotography Tracker.jpg
![File:Amateur Astrophotography Tracker.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Amateur_Astrophotography_Tracker.jpg/400px-Amateur_Astrophotography_Tracker.jpg?20130608180015)
Original file (700 × 1,050 pixels, file size: 140 KB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]DescriptionAmateur Astrophotography Tracker.jpg |
Single-arm, motorized barndoor tracker. Arm is twice the usual length for 1/4-inch drivescrew. Motor spins at 2 RPM, rather than 1 RPM. Goal is to reduce periodic error by doubling the size. This barndoor tracker has been retired, but the parts (other than the tripod and Wimberly gimbal mount) are still assembled. |
Date | |
Source | Barndoor tracker |
Author | s58y |
Licensing
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- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
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- 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.
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This image was originally posted to Flickr by s58y at https://www.flickr.com/photos/45032885@N04/4144045584. It was reviewed on 8 June 2013 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
8 June 2013
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:00, 8 June 2013 | ![]() | 700 × 1,050 (140 KB) | Jacopo Werther (talk | contribs) | {{Information |Description=Single-arm, motorized barndoor tracker. Arm is twice the usual length for 1/4-inch drivescrew. Motor spins at 2 RPM, rather than 1 RPM. Goal is to reduce periodic error by doubling the size. This barndoor tracker has been r... |
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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 | Canon |
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Camera model | Canon EOS 10D |
Exposure time | 1/125 sec (0.008) |
F-number | f/2.8 |
ISO speed rating | 800 |
Date and time of data generation | 12:19, 12 October 2005 |
Lens focal length | 50 mm |
Orientation | Normal |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Adobe Photoshop CS Windows |
File change date and time | 22:10, 16 September 2007 |
Exposure Program | Manual |
APEX shutter speed | 6.965784 |
APEX aperture | 2.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 0.96875 APEX (f/1.4) |
Metering mode | Center weighted average |
Flash | Flash did not fire |
Color space | sRGB |
Image width | 700 px |
Image height | 1,050 px |
Serial number of camera | 1420506696 |
Lens used | 50.0 mm |
Date and time of digitizing | 17:10, 16 September 2007 |
Date metadata was last modified | 17:10, 16 September 2007 |
IIM version | 2 |