LROC Calibrated Data Record Wide Angle Camera – UV (CDRWAU)
CDRWAU – Calibrated Data Record Wide Angle Camera – UV
Instrument: Lunar Reconnaissance Orbiter Camera
PDS Data Set ID: LRO-L-LROC-3-CDR-V1.0
For more information about LROC CDR products, see the CDR Product SIS.
For more information about all LROC products, see the LROC Archive Volume SIS.
The Lunar Reconnaissance Orbiter Camera (LROC) Calibrated Data Record Wide Angle Camera – UV (CDRWAU) data products contain calibrated WAC 2-band UV image data corresponding to a series of framelet images. WAC Digital Numbers (DNs) are decompanded and images are radiometrically calibrated to radiance (i.e. star observations) or I/F (i.e. lunar observations). The CDRWAU stores multispectral framelets in a single band. The file will require further processing to separate framelets into their respective bands and to align the bands, in order to be viewed as a standard multi-band image. The CDRWAU data are delivered in 16-bit format.
Specifications for the UV WAC are in the table below.
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UV |
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FOV |
58.96° |
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IFOV |
7.67 mrad (4x4 binned) |
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Image scale (nadir, 50 km altitude) |
383.5 m/pixel (binned) |
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Image frame width |
56.8 km |
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Image format (each band) |
128 samples x 4 lines (binned) |
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f/# (Ritchey-Chretien) |
5.65 |
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Effective focal length |
4.693 mm |
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Entrance pupil diameter |
0.85 mm |
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System MTF (Nyquist) |
0.37 |
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Gain |
25.9 ± 0.7 e-/DN |
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Noise |
66 ± 4 e- |
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Detector fullwell |
46,100 ± 3600 e- |
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Band | λeff | FWHM |
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SNR (at 1000 DN) |
> 150 |
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Detector digitization |
11-bit, encoded to 8-bits |
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Lossless compression ratio |
1.7:1 |
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Electronics |
4 circuit boards |
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Detector |
Kodak KLA-1001 |
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Pixel format |
1,024 x 1,024 |
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Voltage |
28 ± 7V DC |
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Peak power |
2.7 W |
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Orbit average power |
2.6 W |
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Mass |
0.9 kg |
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Volume (width x length x height) |
15.8 cm x 23.2 cm x 32.3 cm (incl. radiator) |
LROC CDRWAU products have the following file names:
MnnnnnnnnnUC.IMG
where:
nnnnnnnnn = 9-digit Mission Elapsed Time of acquisition (with a single digit for partition which denotes a reset of the MET)
In ODE, CDRWAU products have the following product IDs:
MNNNNNNNNNUC