Identification_Information: Citation: Citation_Information: Originator: Henderson County, NC Tax Assessor/Land Records Department Publication_Date: 200103 Title: Henderson County, NC Digital Black and White Orthophotography Feb-Mar 2001 (1-foot pixels) Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Henderson County, NC Publisher: Henderson County, NC IT/GIS Department Online_Linkage: Description: Abstract: Henderson County, NC county-wide black and white 1-foot, digital orthophotography for 2001 in compressed MrSID format. (.sid) Purpose: With the development of the internet and the need to serve various data to remote users, this data layer was developed using MrSID file format and compression technology to represent high-resolution arial ortho-photographic images that could be viewed, managed and delivered easily. This layer was generated from high resolution .tif files used as base data in the creation of other layers, including parcels. These original .tif files were produced using the American Society of Photogrammetry and Remote Sensing (ASPRS) Accuracy Standards for Large Scale Maps. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200102 Ending_Date: 200103 Currentness_Reference: Flown in 2001 Status: Progress: Complete Maintenance_and_Update_Frequency: If funded, we plan to re-fly these in 2006 Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -82.746742 East_Bounding_Coordinate: -82.245595 North_Bounding_Coordinate: 35.505960 South_Bounding_Coordinate: 35.134966 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Orthophotography Theme_Keyword: Aerial Photography Theme_Keyword: Orthoimagery Theme_Keyword: Framework Place: Place_Keyword_Thesaurus: none Place_Keyword: Henderson County, NC Place_Keyword: North Carolina Place_Keyword: Western North Carolina Place_Keyword: United States Access_Constraints: This data can not and should not be distributed free or at cost by anyone other than Henderson County, NC. The data is available to any GIS user in North Carolina for a fee. Use_Constraints: After access is granted data user agrees to use data within the constraints of the disclaimer and statement of understanding. See: for these restraints. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Pam Carver Contact_Organization: Henderson County, NC Contact_Position: Land Records Supervisor Contact_Address: Address_Type: mailing and physical address Address: 200 N. Grove St. City: Hendersonville State_or_Province: NC Postal_Code: 28792 Country: USA Contact_Voice_Telephone: 828-698-5559 Contact_Facsimile_Telephone: 828-698-5122 Contact_Electronic_Mail_Address: pcarver@hendersoncountync.org Contact_Electronic_Mail_Address: kbrewer@hendersoncountync.org Hours_of_Service: 8:30-5:00 EST Contact_Instructions: Please e-mail first. Data_Set_Credit: Orthophotography flown and processed by Sanborn Inc. under contract to Henderson County, NC. Security_Information: Security_Classification_System: None Security_Classification: None Security_Handling_Description: There are no known security issues with this dataset. The extents of this map contain no known terrorist threats and the extents do not include the CP+L coal power plant in Buncombe County. The only possible concern is the Asheville (AVL) regional airport that is partly contained on these photos. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcGIS 8.2.0.700. Data_Quality_Information: Logical_Consistency_Report: Photography has been compared to parcel data and overlays appropriately. Completeness_Report: The data is complete for the entire county. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Twenty-eight (28) control points were used to constrain the AT solution for the 1" = 1200' scale photography consisting of newly established control. Newly established ground control points were paneled prior to the acquisition of photography, and were weighted at 0.160 meters in x and y and 0.085 meters in z. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: .076 Meters Horizontal_Positional_Accuracy_Explanation: The Root Mean Square (RMS) of the ground control does not exceed 0.076 m. The AT solution is therefore classified as ASPRS Class I which demands that the RMS of the ground control to be less then 1/10 000th the flying height. Therefore for the 1" = 1200' scale photography, the RMS must be less than 0.220 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: N/A Lineage: Process_Step: Process_Description: Define project area, define ground control, fly aerial photography with airborne GPS, and perform aerial triangulation. Process_Date: 200203 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chris Russelavage Contact_Organization: Sanborn Contact_Position: GIS Analyst Contact_Address: Address_Type: mailing address Address: 1935 Jamboree Dr. Suite 100 City: Colorado Springs State_or_Province: CO Postal_Code: 80920 Country: USA Contact_Voice_Telephone: (719)264-5543 Contact_Electronic_Mail_Address: crusselavage@sanborn.com Hours_of_Service: 8-5 Mt. time Contact_Instructions: Chris Russelavage 1935 Jamboree Drive, Suite 100 Colorado Springs, CO 80920-5358 Cloud_Cover: 5% Spatial_Data_Organization_Information: Indirect_Spatial_Reference: 37089 Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 130000 Column_Count: 145000 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 34.333333 Standard_Parallel: 36.166667 Longitude_of_Central_Meridian: -79.000000 Latitude_of_Projection_Origin: 33.750000 False_Easting: 2000000.002617 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1.000000 Ordinate_Resolution: 1.000000 Planar_Distance_Units: survey feet Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Black and White MrSID Raster Mosaic Entity_Type_Definition: County-wide compilation of 1 ft pixel images Entity_Type_Definition_Source: Multiresolution Seamless Image Database (MrSID). A compression technique especially for maintaining the quality of large images. Allows for a high compression ratio and fast access to large amounts of data at any scale. Attribute: Attribute_Label: ObjectID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Value Attribute_Definition: Number from 0 to 255 indicating shade of pixel Attribute_Definition_Source: Henderson County GIS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Count Attribute_Definition: Number of pixels with that value Attribute_Definition_Source: Henderson County GIS Attribute_Domain_Values: Unrepresentable_Domain: Count of pixels with the same value. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Katie Brewer Contact_Organization: Henderson County IT/GIS Contact_Position: GIS Coordinator Contact_Address: Address_Type: mailing and physical address Address: 200 N Grove St - Suite 86B City: Hendersonville State_or_Province: NC Postal_Code: 28792 Country: USA Contact_Voice_Telephone: 828-698-4425 Contact_Facsimile_Telephone: 828-698-5122 Contact_Electronic_Mail_Address: kbrewer@hendersoncountync.org Hours_of_Service: 8:30am to 5:00pm Monday - Friday Contact_Instructions: If possible, please send request via email. Distribution_Liability: See disclaimer and statement of understanding at: Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SID Transfer_Size: 556.556 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: \\Taxserver\e$\ArcAir\2001Sids Offline_Option: Offline_Media: CD-ROM Recording_Format: CD written by Easy CD Creator by Roxio Compatibility_Information: Data CD format for the most compatibility. Fees: $250 Ordering_Instructions: Please email GIS Coordinator at kbrewer@hendersoncountync.org Turnaround: one week Custom_Order_Process: Please contact the Henderson County GIS Coordinator via e-mail: kbrewer@hendersoncountync.org Metadata_Reference_Information: Metadata_Date: 20030304 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Katie Brewer Contact_Organization: Henderson County IT/GIS Contact_Position: GIS Coordinator Contact_Address: Address_Type: mailing and physical address Address: 200 N Grove St - Suite 86B City: Hendersonville State_or_Province: NC Postal_Code: 28792 Country: USA Contact_Voice_Telephone: 828-698-4425 Contact_Facsimile_Telephone: 828-698-5122 Contact_Electronic_Mail_Address: kbrewer@hendersoncountync.org Hours_of_Service: 8:30am to 5:00pm Monday - Friday Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: Profile_Name: ESRI Metadata Profile