Keywords
Theme:
imageryBaseMapsEarthCover, location
Theme:
historical aerial photography, aerial photography, photo, imagery, center point, centroid, 1970
Place:
Connecticut, CT, Massachusetts, MA, New York, NY, Rhode Island, RI
Place:
United States
Temporal:
1970
Description
Abstract
This is a point feature class that defines the center point for each Connecticut 1970 aerial photograph. There are 6,680 aerial photograph center points in this feature class. Photographs represented by these centerpoints were taken at a scale of 1:20000. Each center point represents a photograph approximately 9" x 9" covering approximately 2.84 miles east-west by 2.84 miles north-south, covering a geographic area of approximately 8.1 square miles.. The overlap between adjacent photos is approximately 1.49 miles. Photographs were originally taken by United States Department of Public Works.
Purpose
This data serves as a center point index for the set of 1970 aerial photos for Connecticut and includes links to download scanned copies of the original aerial photos to facilitate access to these digitial images.
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Status of the data
Complete
Data update frequency:
None planned
Time period for which the data is relevant
Date and time:
unknown
Description:
ground condition
Publication Information
Who created the data: University of Connecticut Libraries Map and Geographic Information Center - MAGIC
Date and time:
12/20/2010 at time 13:00
_________________
Data storage and access information
File name: apindex_37800_0000_1970_s20_CTDEP_1_shp_wgs84
Type of data: vector digital data
Location of the data:
http://magic.lib.uconn.edu/magic_2/vector/37800/apindex_37800_0000_1970_s20_CTDEP_1_shp.zip
Data processing environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
Accessing the data
Data format: GeoDatabase FeatureClass
Size of the data: 0.178 MB
Data transfer size: 0.178 MB
Network location:
http://magic.lib.uconn.edu
Constraints on accessing and using the data
Access constraints:
None, this data is in the public domain and may be redistributed.
Use constraints:
No restrictions or legal prerequisites for using the data. Although this data set has been used by the University of Connecticut Libraries, Map and Geographic Information Center - MAGIC, no warranty, expressed or implied, is made by the University of Connecticut Libraries, Map and Geographic Information Center - MAGIC as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University of Connecticut Libraries, Map and Geographic Information Center - MAGIC in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the University of Connecticut Libraries, Map and Geographic Information Center - MAGIC as the source for this information. For example, include the following data source description when printing this layer on a map: Photo centers - From the Connecticut 1970 Aerial Photography Center Point layer, published by the University of Connecticut Map and Geographic Information Center - MAGIC.
Details about this document
Contents last updated: 20101220
at time 13590500
Who completed this document
GIS Librarian
University of Connecticut Libraries Map and Geographic Information Center - MAGIC
mailing address:
University of Connecticut Libraries
Map and Geographic Information Center - MAGIC
369 Fairfield Road U-2005M
Storrs, Connecticut 06269
USA
(860) 486 - 4589 (voice)
magic@uconn.edu
Hours of service:
Monday - Friday: 9am - 12pm, 1pm - 4pm
Contact Instructions:
Summer and Break Hours
Monday - Friday: 1pm - 4pm
Standards used to create this document
Horizontal coordinate system
Geographic coordinate system name: GCS_WGS_1984
Details
Geographic Coordinate System
Latitude Resolution: 0.000000
Longitude Resolution: 0.000000
Geographic Coordinate Units: Decimal degrees
Geodetic Model
Horizontal Datum Name: D_WGS_1984
Ellipsoid Name: WGS_1984
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224
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Bounding coordinates
Horizontal
In decimal degrees
West:
-73.741894
East:
-71.751656
North:
42.044917
South:
40.983574
In projected or local coordinates
Left: -73.741894
Right: -71.751656
Top: 42.044917
Bottom: 40.983574
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Lineage
FGDC lineage
Process step 1
Process description: Dataset copied.
Process step 2
Process description: Dataset moved.
Source used: Z:\AdimgProject\Adimg points\Complete_Files\1970_connecticut_dpw_s20
Process step 3
Process description: Dataset copied.
Source used: H:\AdimgProject\Adimg points\COMPLETE_FILES\Points\1970_connecticut_dpw_s20
Process step 4
Process description: Dataset copied.
Process date: 20090915
at time 12004600
Process step 5
Process description: Dataset copied.
Process date: 20091229
at time 10492800
Process step 6
Process description: Dataset moved.
Source used: C:\DATA\Connecticut_1970s_WGS84
Process date: 20100222
at time 15343200
Process step 7
Process description: Metadata imported.
Source used: C:\DOCUME~1\MAGICG~1\LOCALS~1\Temp\xml9228.tmp
Process date: 20101025
at time 10192400
Sources
Source 1:
1970 - Connecticut Aerial Photo Index
(1970 - Connecticut Aerial Photo Index)
Scale denominator: unknowns
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Spatial data quality
Horizontal positional accuracy
The horizontal positional accuracy of this data is unknown.
_________________
Spatial data description
Vector data information
ESRI description
apindex_37800_0000_1970_s20_CTDEP_1_shp_wgs84
ESRI feature type: Simple
Geometry type: Point
Topology: FALSE
Feature count: 6680
Spatial Index: TRUE
Linear referencing: FALSE
SDTS description
Feature class: SDTS feature type, feature count
apindex_37800_0000_1970_s20_CTDEP_1_shp_wgs84:
Entity point, 6680