File:Pt Allerton FCT.jpg
Original file (549 × 800 pixels, file size: 148 KB, MIME type: image/jpeg)
Captions
Summary edit
DescriptionPt Allerton FCT.jpg |
English: This 7-story fire control tower, photographed in 2009 (looking WSW), is located on Pt. Allerton, in Hull, MA. It is the highest in the Boston Harbor Defense fire control system. It survives in the back yard of a private residence, in almost mint condition, visible throughout Hull, and looking out over miles and miles of coastline and ocean. A detailed description of the tower is contained here.
The top three stories of the tower were used for observation. Each story held a base end station, and each mounted a DPF (Depression Position Finder), as well as a spotting scope. The top level DPF, at 179 feet, controlled fire for Battery Murphy, the 16-inch guns in Nahant. Next came the 6th story, at 171 feet, which controlled Battery Jewell, the 6-inch guns a short distance to the north, on Outer Brewster Island. Then came the fifth story, at 163 feet, which controlled fire for Battery 207, the 6-inch guns across the harbor entrance at Ft. Dawes. A concrete crow's nest "basket" was located just below the roof level, with a trapdoor that opened up and provided space for an observer of the Ant-Aircraft Intelligence Service (AAIS) who stood watches spotting for intruding aircraft. The railing around the edge of the roof was added (for the safety of visitors) by the present (2010) owner, who also installed a new staircase to the roof through the former AAIS crow's nest. |
Date | 12 May 2010 (original upload date) |
Source | Own work |
Author | Pgrig at English Wikipedia |
Licensing edit
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Original upload log edit
Transferred from en.wikipedia to Commons by Ktr101 using CommonsHelper.
- 2010-05-12 18:39 Pgrig 549×800× (151356 bytes) This 7-story fire control tower, photographed in 2009, is located on Pt. Allerton, in Hull, MA. It is the highest in the Boston Harbor Defense fire control system. It survives in the back yard of a private residence, in almost mint condition, visible thro
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:14, 30 June 2013 | 549 × 800 (148 KB) | Ktr101 (talk | contribs) | {{Information |Description={{en|This 7-story fire control tower, photographed in 2009 (looking WSW), is located on Pt. Allerton, in Hull, MA. It is the highest in the Boston Harbor Defense fire control system. It survives in the back yard of a private ... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
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 |
---|---|
Camera model | Canon EOS 5D |
Author | Paul Grigorieff |
Copyright holder |
|
Exposure time | 1/800 sec (0.00125) |
F-number | f/10 |
ISO speed rating | 400 |
Date and time of data generation | 12:48, 6 March 2010 |
Lens focal length | 70 mm |
Online copyright statement | www.CoastDefense.com |
Orientation | Normal |
Horizontal resolution | 117 dpc |
Vertical resolution | 117 dpc |
Software used | Adobe Photoshop CS Windows |
File change date and time | 13:39, 12 May 2010 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 12:48, 6 March 2010 |
Meaning of each component |
|
APEX shutter speed | 9.625 |
APEX aperture | 6.625 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 3,086.925795053 |
Focal plane Y resolution | 3,091.2951167728 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 549 px |
Image height | 800 px |
Urgency | 5 |
Date metadata was last modified | 08:39, 12 May 2010 |
Copyright status | Copyrighted |
IIM version | 2 |