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Earth Observing 1 (EO-1)
EO-1 Image Gallery
Frequently Asked Questions
General
1
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What is EO-1's orbit?
2
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What is the geographic coverage of an ALI or Hyperion scene?
3
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What does the browse represent for ALI and Hyperion?
4
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What is the entity ID naming convention?
DAR
5
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How many Data Acquisition Requests (DARs) does the spacecraft image daily?
6
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What are the off-nadir pointing capabilities for EO-1 DAR collections?
7
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When does distortion become a significant factor in off-nadir versus nadir collects?
8
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What is the geographic length of an EO-1 DAR collection?
Data Products
9
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Are there restrictions for the use of EO-1 data?
10
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What if there is no data in the archive for my area of interest?
11
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What are the bands and spectral ranges for Hyperion data?
12
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What product formats are available for Hyperion?
13
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What is the geometric accuracy expected for the Hyperion data?
14
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What are the files contained within a Hyperion Level 1 product?
15
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What are the differences between the earlier Thompson Ramo Woolridge (TRW) products and the new USGS Hyperion products?
16
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Where is band wavelength specific information located in the Hyperion product?
17
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What are the files contained in an ALI Level 1 product?
18
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What are the bands and spectral ranges for ALI?
19
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Why are there 4 image data files within the Level 1 ALI product?
20
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What product formats are available for ALI?
21
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What are known ALI anomalies?
22
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What is the geometric accuracy of an ALI Level 1 product?
Data Conversion
23
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How are the radiance values (L) determined within the Hyperion bands?
24
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What is the signal-to-noise ratio (SNR) for Hyperion?
25
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How do you convert radiance to reflectance?
26
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What is the flag mask?
27
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How are the radiance values (L) derived in the ALI Level 1R product?
28
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What is the signal-to-noise ratio (SNR) for ALI?
29
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What is the conversion to get from ALI Level 1 to a Level 0?
Data Import
30
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What does it mean when my data has a .tar.gz or .tgz extension?
31
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Using ENVI to Mosaic Individual ALI Files for L1R products.