NDLI: Star tracking reticles

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Star tracking reticles

Content Provider	NASA Technical Reports Server (NTRS)
Author	Smith, W. O.
Copyright Year	1973
Description	A method for the production of reticles, particularly those for use in outer space, where the product is a quartz base coated with highly adherent layers of chromium, chromium-silver, and silver vacuum deposited through a mask, and then coated with an electrodeposit of copper from a copper sulfate solution followed by an electrodeposit of black chromium is described. The masks are produced by coating a beryllium-copper alloy substrate with a positive working photoresist, developing the photoresist, according to a pattern to leave a positive mask, plating uncoated areas with gold, removing the photoresist, coating the substrate with a negative working photoresist, developing the negative working photoresist to expose the base metal of the pattern, and chemically etching the unplated side of the pattern to produce the mask.
File Size	694474
Page Count	7
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730023588
Archival Resource Key	ark:/13960/t95766583
Language	English
Publisher Date	1973-09-18
Access Restriction	Open
Subject Keyword	Reticles Near Ultraviolet Radiation Optical Equipment Light Visible Radiation Production Engineering Star Trackers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Patent

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