Photometry in the 3200-9000 A range on board the Mars-5 automatic interplanetary station

Details Photometry in the 3200-9000 A range on board the Mars-5 automatic interplanetary station Photometry in the 3200-9000 A range on board the Mars-5 automatic interplanetary station

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7523923k&link_type=abstract

Photometry in the 3200-9000 A range on board the Mars-5 automatic interplanetary station NASA Transl. into ENGLISH from Kosm. Is

Other

Astronomical Photometry, Light (Visible Radiation), Mars Probes, Brightness, Lens Design, Radiometers, Wavelengths

Scientific paper

Optical circuitry of the Mars-5 photometers VFM-73 and ITM-73 is depicted, their operation is described, and measurement results are displayed. The VFM-73 photometer is equipped with two objective lenses. One, (with its axis directed parallel to the optical axes of the radiometer, IR-altimeter, and other instruments) is employed for multicolor observations in the 3200-7000 A range with separate filters at: 3200, 3700, 4100, 4900, 5600, and 7000 A. The second lens operates in the scanning mode with its scanline perpendicular to the trace, and the directivity pattern of both lenses is 1 deg. The ITM-73 photometer is intended for measuring brightness gradients in the areas adjacent to the track, and operates in the scanning mode, performing the scanning motion in the plane perpendicular to the orbital plane with the scanline perpendicular to the track. It operates at the wavelength of 8200 A, with a filter bandwidth of about 1000 A. The photometric profiles of the track of 23 February 1974 are shown on all filter wavelengths.

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