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Clementine High-Resolution Camera (HIRES)

NSSDCA ID: 1994-004A-06

Mission Name: Clementine
Principal Investigator:Dr. Eugene M. Shoemaker

Description

The Clementine High-Resolution Camera consisted of a telescope with an image intensifier and a frame-transfer CCD imager. The imaging system was designed to study selected portions of the surfaces of the Moon and the near-Earth asteroid 1620 Geographos, although the asteroid rendezvous was cancelled due to a malfunction. This experiment allowed the detailed study of surface processes on the Moon and, combined with spectral data, allowed high-resolution compositional and geologic studies.

The imager was an intensified Thompson CCD camera with a six position filter wheel. The set of filters consisted of a broad-band filter with a bandpass of 400 to 800 nm, four narrow-band filters with center wavelengths (and bandpass width (FWHM)) of 415 nm (40 nm), 560 nm (10 nm), 650 nm (10 nm), and 750 nm (20 nm), and 1 opaque cover to protect the image intensifier. The field of view was 0.3 x 0.4 degrees, translating to a width of about 2 km at a nominal lunar altitude of 400 Km. The image array is 288 x 384 pixels, (pixel size of 23 x 23 micrometers) so the pixel resolution at the Moon was 7-20 m depending on the spacecraft altitude. (At Geographos the resolution would have been <5 m at closest approach.) The clear aperature was 131 mm and the focal length was 1250 mm. The nominal imaging rate was about 10 frames/s in individual image bursts covering all filters at the Moon. The high resolution and small field of view only allowed coverage of selected areas of the Moon, in the form of either long, narrow strips of a single color or shorter strips of up to four colors. The instrument has a signal to noise ratio of 13 to 41 depending on the albedo and phase angle, with a 1% relative calibration and a 20% absolute calibration, and a dynamic range of 2000.

The telescope of the High-Resolution Camera was shared by the LIDAR instrument. The 1064 nm laser return was split to the LIDAR receiver (an avalanche photodiode detector) using a dichroic filter.

Alternate Names

  • Clementine/HIRES
  • HIRES
  • urn:nasa:pds:context:instrument:clem1.hires

Facts in Brief

Mass: 1.12 kg
Power (avg): 9.5 W
Bit rate (avg): 1630 kbps

Funding Agencies

  • Department of Defense-Department of the Navy (United States)
  • NASA-Office of Space Science (United States)

Disciplines

  • Planetary Science: Small Bodies
  • Planetary Science: Geology and Geophysics

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Paul D. SpudisDeputy Team LeaderLunar and Planetary Institutespudis@lpi.usra.edu
Dr. Eugene M. ShoemakerTeam LeaderUS Geological Survey
Prof. Jacques E. BlamontTeam MemberCNRS, Service d'Aeronomie
Mr. Merton E. DaviesTeam MemberRand Corporation
Dr. David E. SmithTeam MemberNASA Goddard Space Flight Centerdavid.e.smith@nasa.gov
Dr. Daniel N. BakerTeam MemberNASA Goddard Space Flight Centerdaniel.baker@colorado.edu
Mr. Thomas C. DuxburyTeam MemberNASA Jet Propulsion Laboratorytduxbury@gmu.edu
Dr. Bonnie J. BurattiTeam MemberNASA Jet Propulsion Laboratorybburatti@scn1.jpl.nasa.gov
Dr. Carle M. PietersTeam MemberBrown Universitycarle_pieters@brown.edu
Mr. Charles H. ActonTeam MemberNASA Jet Propulsion Laboratorycacton@mail3.jpl.nasa.gov
Mr. Eric EliasonTeam MemberUS Geological Surveyeeliason@usgs.gov
Dr. Alfred S. McEwenTeam MemberUS Geological Surveymcewen@pirl.lpl.arizona.edu
Dr. Paul G. LuceyTeam MemberUniversity of Hawaiilucey@pgd.hawaii.edu

Selected References

  • Robinson, M. S., et al., A radiometric calibration for the Clementine HIRES camera, J. Geophys. Res., 108, No. E4, Apr. 2003.
  • Ledebuhr, A. G., et al., HiRes camera and lidar ranging system for the Clementine mission, in Applied Laser Radar Technology II, Proc. SPIE Vol. 2472, 62-81, G. W. Kamerman Ed., doi:10.1117/12.212030, Jun. 1995.

Related Data/Information at NSSDCA

Clementine EDR Image Archive
Clementine Lunar Digital Image Mosaic (LDIM) Basemaps

Clementine Mission Overview

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