8/8/2019 Mariner IV Mars Photos

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Washington After the longest space exploration mission inhistory (Nov. 28, 1964-Jul. 14, 1965), the National Aeronauticsand space Administration's Mariner IV electronic signals toEarth were arriving with a signal strength of slightly less thanone billionth of one watt. Supersensitive receivers, coupledwith the big Deep Space Network antennas, were able to homein on the Mariner signal, faint as it was, and amplify it fortelemetry processing, recording and relay, via a ground communi-cations system, to NASA's Jet Propulsion Laboratory Missionf !f n -h > T' 1 Pa s a r 3 < = n a .

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This and the following frames are photographic representations ofdigital data radioed from Mars by the Mariner IV spacecraft. Marinerphotographed Mars beginning at 5:18:33 p.m. (PDT), July 14, 1965, justprior to its closest approach of about 6,000 miles from the planet at6:01 p.m. Viewed with data block at left, North is at top in all photosThe Sun is 25 from the zenith, from the southeast in this photo.Aea Covered: Along the limb (edge): about 410 miles.From limb to edge of the photo: about 890 miles.Location (picture center): 35 North Latitude, 172 East Longitude.

Map Descriptions Bright region be-tween Trivium Charontis andPro-pontis Il.Phlegra, a bright re-gion is on the limb.REMARKS:Top Frame Most recent interme-diate step data processing, in-cluding contrast enhancement fac-tor of two and fiducial marks re-moved.Lower Left Frame Raw picture.Lower Right Frame With prelimi-nary processing as released Thursday, July 15, 1965.

Time Taken: 5:18:33 p.m., PDT,July 14, 1965.

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The sun is 38 from the zenith, from the North In thephoto.Area Covered: East-West: 170 miles. North-South 160 miles,Location: 23 South Latitude, 191 East Longitude.Map Description: Mare Slrenum, bordering on Atlantis inthe southwest corner of the frame.Time Taken: 5:28:09 p.m. PDT. July 14, 1965.

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The sun is 47 degrees from the zenith, from the north inthe photo.Area covered: East-west: 170 miles. North-south: 150 miles.Location: 31 degrees south latitude, 197 degrees eastlongitude.Map description: Atlantis, between Mare Sirenum and MareCimmerium.Time taken: 530:33 p.m., PDT, July 14, 1965.

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The sun Is 57 degrees from the zenith,'from the northIn the photo.Area covered: East-west: 170 miles. North-south: 140miles.Location: 39 degrees South Latitude, 205 degrees Eastlongitude.Map description: Border between Mare Cimmerium to thenorth and the bright region Phaethontis.Time taken: 5:32:57 p.m., PUT, July 14, 1965.

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This is a photographic representation of digital dataradioed from Mars by the Mariner IV spacecraft. Marinerphotographed Mars beginning at 5:18:33 p.m. PDT, July 14, 1965.Just prior to its closest approach of about 6,000 miles from theplanet at 6:01 p.m.The sun is 60 degrees from the zenith, from the North inthe photo.Time Taken: 5:33:45 p.m. PDT, July 14, 1965.Area Covered: East-West: 1?0 miles. North-South: 140milesLocation: 4l degrees South Latitude, 208 degrees EastLongitude