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Dave Scott's Apollo 15 Lunar Orbit-Flown Star Chart

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:20,000.00 - 30,000.00 USD
Dave Scott's Apollo 15 Lunar Orbit-Flown Star Chart

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Auction Date:2017 Apr 20 @ 18:00 (UTC-05:00 : EST/CDT)
Location:236 Commercial St., Suite 100, Boston, Massachusetts, 02109, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
Flown lunar orbit star chart used on the Apollo 15 mission, entitled "LM Lunar Orbit, Star Chart, July 26, 1971 Launch," one page, 15.75 x 7.75, signed and certified on the reverse in blue felt tip, "Flown in Lunar Orbit for 6 days during Apollo 15, July 26–Aug 7, 1971. Dave Scott, Apollo 15 CDR." In fine condition. Accompanied by a detailed signed letter of provenance from Dave Scott, in part: "I hereby certify that the Lunar Orbit Star Chart included with this letter was used during six days in lunar orbit during Apollo 15…The navigation of Apollo spacecraft was based on using the stars in a form of classical celestial navigation. The star chart is made of a plastic film (chronopaque). Color is used to differentiate the planet from the star field…Specific stars used for Apollo navigation are highlighted, named and numbered with a two digit numerical code…the constellations are heavily outlined and there are no background star fields to confuse the crew in locating the stars within the constellations. The star chart was used to identify and locate specific stars such that an onboard optical device, the Sextant, could be used to determine the orientation of the spacecraft relative to an onboard Inertial Measurement Unit…The onboard computer…would then calculate the location of the spacecraft in inertial space based on stored celestial coordinates of the navigation stars plus the Earth, Sun and Moon." Pre-certified Zarelli Space Authentication.