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Collection:
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NASA Image eXchange Collection
Collection
NASA Image eXchange Collection
Collection
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Title:
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Apollo Project- star projector
Title
Apollo Project- star projector
Title
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Description:
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The specially designed star projector used in the Projection Planetarium. From A.W. Vogeley, "Piloted Space-Flight Simulation at Langley Research Center," Paper presented at the American Society of Mechanical Engineers, 1966 Winter Meeting, New York, NY, November 27 - December 1, 1966. "Another approach to the scene-generation problem is the point-light-source projection technique. This technique has been used in the Langley Projection Planetarium,... to study Apollo launch-abort problems. This method was very effective in providing the required horizon-to-horizon view of Florida as seen from about 100,000 feet." "This projector operates on a concept developed by Spitz. It consists of a point-light source reflecting off a centrally located highly reflective sphere which directs the light outward through the many holes representing the stars. The size of the holes is varied to vary star magnitude. The star images are brought into focus on the inside of the planetarium by lenses glued to the surface of the projector and the diameter of the projection sphere govern the focal length required for these lenses. Although this type of projector does not have the precision required for the study of navigation problems it is very adequate for pilot control problems such as rendezvous where the star field is primarily used as an attitude reference.
Description
The specially designed star projector used in the Projection Planetarium. From A.W. Vogeley, "Piloted Space-Flight Simulation at Langley Research Center," Paper presented at the American Society of Mechanical Engineers, 1966 Winter Meeting, New York, NY, November 27 - December 1, 1966. "Another approach to the scene-generation problem is the point-light-source projection technique. This technique has been used in the Langley Projection Planetarium,... to study Apollo launch-abort problems. This method was very effective in providing the required horizon-to-horizon view of Florida as seen from about 100,000 feet." "This projector operates on a concept developed by Spitz. It consists of a point-light source reflecting off a centrally located highly reflective sphere which directs the light outward through the many holes representing the stars. The size of the holes is varied to vary star magnitude. The star images are brought into focus on the inside of the planetarium by lenses glued to the surface of the projector and the diameter of the projection sphere govern the focal length required for these lenses. Although this type of projector does not have the precision required for the study of navigation problems it is very adequate for pilot control problems such as rendezvous where the star field is primarily used as an attitude reference.
Description
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Date:
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03.30.1964
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Credit:
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facet_where:
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Florida
facet_where
Florida
facet_where
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facet_where:
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New York
facet_where
New York
facet_where
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facet_where:
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Langley Research Center (LaRC)
facet_where
Langley Research Center (LaRC)
facet_where
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facet_when:
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December 1, 1966
facet_when
December 1, 1966
facet_when
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facet_when:
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03-30-1964
facet_when
03-30-1964
facet_when
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facet_when_year:
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1966
facet_when_year
1966
facet_when_year
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facet_when_year:
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1964
facet_when_year
1964
facet_when_year
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Media:
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IMAGE
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ID:
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EL-2002-00439
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Other ID:
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L64-2771
Other_ID
L64-2771
Other ID
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UID:
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SPD-NIX-EL-2002-0043 9
UID
SPD-NIX-EL-2002-0043 9
UID
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orignial url:
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orignial_url
orignial url
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