Editing Surveyor 6 (section)

=== Television ===
The TV camera consisted of a [[vidicon]] tube, 25 and 100&nbsp;mm [[focal length]] lenses, [[Shutter (photography)|shutters]], [[Polarizing filter (Photography)|polarizing filter]]s (as opposed to [[color filter]]s used on the previous Surveyor cameras), and iris mounted nearly vertically and surmounted by a mirror that could be adjusted by stepping motors to move in both [[azimuth]] and elevation. The polarizing filters served as analyzers for the detection of measurement of the linearly polarized component of light scattered from the lunar surface. An auxiliary mirror was used for viewing the lunar surface beneath the spacecraft. The frame by frame coverage of the lunar surface provided a 360 deg azimuth view and an elevation view from approximately +90 deg above the plane normal to the camera z axis to −60 deg below this same plane. Both 600 line and 200 line modes of operation were used. The 200 line mode transmitted over an [[omnidirectional antenna]] and scanned one frame each 61.8 seconds. A complete video transmission of each 200 line picture required 20 seconds and utilized a [[Bandwidth (signal processing)|bandwidth]] of 1.2&nbsp;kHz. Most transmissions consisted of the 600 line pictures, which were telemetered by a [[directional antenna]]. 

The frames were scanned each 3.6 seconds. Each frame required nominally one second to be read from the vidicon and utilized a 220&nbsp;kHz bandwidth for transmission. The optical surfaces were the cleanest of any mission because of a redesigned mirror hood. The television images were displayed on a slow scan monitor coated with a long persistence [[phosphor]]. The persistence was selected to optimally match the nominal maximum frame rate. One frame of TV identification was received for each incoming TV frame and was displayed in real time<!-- needs disambiguation --> at a rate compatible with that of the incoming image. These data were recorded on a video magnetic [[tape recorder]] and on 70&nbsp;mm film. The camera performance was excellent in terms of both the quantity and quality of pictures. Between lunar landing, lunar 'second' landing, and the lunar first day sunset on November 24, 1967, 29,914 pictures were taken and transmitted.
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File:Surveyor 6 Fig 7-41d1.jpg|The mare surface
File:Surveyor 6 Fig 7-41d2.jpg|Another view of the mare surface
File:Surveyor 6 Effects-of-the-vernier-rock.jpg|Effects of the vernier-rocket engine blast on the double imprint previously made in the lunar surface by one of the spacecraft's crushable blocks during the initial touchdown.
File:Surveyor-7-effects-of-the-vernier-rocket engine blast.jpg|Effects of the vernier-rocket engine blast (before/after).
</gallery>