White Sands Metadata file: All satellite image files, TIF and Lan, were generated from the same Landsat 7 ETM+ scene. Included in the download folder are three Lan files that were generated using MultiSpec software. Due to different download speeds and educational applications a smaller lan file, 512 by 512 pixels, was subsetted from the larger 2000 pixel by 1400 pixel file. Another lan file was included which is a one band file containing Landsat 7 ETM+ panchromatic channel. In addition to the Lan files, numerous color composite images were generated using MultiSpec. Each of these images enhances different features of the satellite image. The color composites were saved as Tif files and retain their geographic information. The Tif color composites were 2 percent tail clipped enhanced instead of showing the entire range of the data. If the entire range is needed then a new image needs to be generated using the MultiSpec display specification. In addition the panchromatic band, channel 8 with 15 meter resolution, was included in the download folder. (1) LAN files and name: 2001_01_01_sands.lan, 19.141 mb Lines: 2000 Number of bands: 7 Columns: 1400 Band Format: BIL 2001_01_01_sands_s.lan, 1.793 mb Lines: 512 Number of bands: 7 Columns: 512 Band Format: BIL 2001_01_01_sands_pan.lan, 10.931 mb Lines: 2100 Number of bands: 1 Columns: 1400 Band Format: BIL In the file name is the following information: yyyy = four digit year of acquisition, mm = two digit month, dd = two digit day, PLACE = five letters of location, s = a subset of the image. If new files are generated from the Lan files using MultiSpecs' change image file format, then it is recommended that above data remain in the file name. Also this metadata file should be saved in the file folder to be referred to in the future. The Tif files use the same naming system for acquisition date and place name. In addition, the channels used to create the 3 channel color composite are included in the file name. The "chs" is the abbreviation for channels used by MultiSpec. After the "chs" are the Landsat 7 ETM + channel used. Below, see item number 3, which band of data corresponds to which number is explained. Additionally, you can refer to the Landsat PowerPoint presentation; insert address, to explain more about the uses of different color composite images. 2000 x 1400 pixel image files derived from 2001_01_01_sands.lan, TIF files and name:2001_01_01_sands_chs321 8.204 mb TIF files and name:2001_01_01_sands_chs432 8.204 mb TIF files and name:2001_01_01_sands_chs542 8.204 mb TIF files and name:2001_01_01_sands_chs742 8.204 mb 512 x 512 pixel image files derived from 2001_01_01_sands_s.lan, TIF files and name:2001_01_01_sands_s_chs321 0.769 mb TIF files and name:2001_01_01_sands_s_chs432 0.769 mb TIF files and name:2001_01_01_sands_s_chs542 0.769 mb TIF files and name:2001_01_01_martha_s_chs742 0.769 mb 2000 x 1400 pixel image files derived from 2001_01_01_sands_pan.lan, TIF files and name:2001_01_01_sands_pan_ch1 10.933 mb ---------------------------------- (2) Geographic information: UTM zone 13 N Pixel size= 30 meter, including the thermal band which is usually 60 meter resolution. The thermal band was resampled to create the .lan file. The panchromatic band data, in the lan file 2001_01_01_sands_pan.lan has a resolution of 15 meters. (3) Thermal band was included as channel 7 in the lan file. Which Landsat band is in which channel: Landsat 7 ETM+ channel 1= band 1(Blue, 0.45 - 0.52 um) Landsat 7 ETM+ channel 2= band 2(Green, 0.52 - 0.60 um) Landsat 7 ETM+ channel 3= band 3(Red, 0.63 - 0.69 um) Landsat 7 ETM+ channel 4= band 4(Near Infrared, 0.76 - 0.90 um) Landsat 7 ETM+ channel 5= band 5(Mid Infrared, 1.55 - 1.75 um) Landsat 7 ETM+ channel 7= band 6(Mid Infrared, 2.08 - 2.35 um) Landsat 7 ETM+ channel 6= band 7(Thermal Band, 10.4 - 12.5 um) Landsat 7 ETM+ channel 8= band 1(Panchromatic Band) --------------------------- (4) Acquisition date: May 09, 2000 Sensor: Landsat 7 ETM+ Path: 033 Row: 037 BACKGROUND: The launch of the Landsat-7 satellite on April 15, 1999, marks the addition of the latest satellite to the National Aeronautics and Space Administration's Landsat satellite series. The Landsat-7 satellite carries the enhanced thematic mapper plus (ETM+) sensor and is part of an ongoing mission to provide quality remote sensing data in support of research and applications activities. Information on the Landsat-7 Program, including information about the Landsat-7 satellite, the ETM+ sensor, and Landsat-7 data collection, is available in the "Landsat 7 Science Data Users Handbook." http://lpgs-server.gsfc.nasa.gov/!LPGS_Baseline/LPGS_DFCB_Rev3(5.99).pdf