RR Auction Home
Current Auction Is Open For Bidding
Home |Sitemap|Contact Us| Past Auctions  
 How to Bid   Register to Bid   Auctions   Consign   About Us   Featured Lots   Reviews 
Bidder Login
Show Password

New Bidder Registration
Forgot your password?

The Current Auction
Ends May 12th
The Einstein Archives of Ludwik Silberstein Auction Preview
Begins May 13
Advanced Search
By Item Number
Gallery Search
Past Auction Search
How Do I Bid?
What is BidTracker™?
New Bidder Registration
The 30-Minute Rule
Terms and Conditions
New to RR Auction?
About Us
Register to Bid
Jobs at RR Auction
Press Releases
Consign to RR Auction
How to Consign
2021 Auction Calendar
Jan 13
Jan 21
Feb 10
Feb 18
Mar 10
Mar 25
Apr 14
Apr 22
May 12
May 20
  View All Dates & Deadlines

Item 247 - Apollo Sextant Catalog 409 (May 2013)

Back To Previous Page
(we are no longer accepting bids on this item)
Minimum Bid: $1,000.00
Sold Price: $10,621.20 (includes buyer's premium)


Scarce unflown Block II Apollo sextant. Metal cased unit measures approximately 7 x 6 x 6, with parts having serial numbers SN EE-1 and SN EE-2. The sextant was used with its counterpart (the scanning telescope) to determine the Command Module’s position and attitude with relation to stars or landmarks. This data was then supplied to the onboard computer to calibrate the spacecraft’s Inertial Measurement Unit (IMU). The sextant was a highly accurate optical device capable of measuring the included angle between two targets. Angular sightings of two targets were conducted through the fixed beam splitter and movable mirror located in the sextant head. The sighting head assembly is rotatable to 270 degrees in shaft axis position in either direction, from the zero reference point. The sextant lens provides 1.8-degree true field of view with 28X magnification. The movable mirror is capable of sighting a target to 57 degrees line of sight from the shaft axis. Both the fixed and moveable mirrors are fabricated of beryllium; the beryllium is Kanigen coated and aluminized to obtain maximum reflectivity. The sextant target optics include an indexing mirror assembly and a beam splitter, telescope, and eyepiece assembly. RR Auction COA.

Terms and abbreviations used in our descriptions.


Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge

Important Information

Tips For Consignors


For a complete list of auction beginning and ending dates, check our dates and deadlines page.