Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer

This is a metal scale model of a modern ground based reflecting telescope: the model has a 5-inch primary and a smaller set of secondary mirrors on a rotating frame. The overall design and many details of this model quite closely follow those of the National Optical Astronomy Observatories NOAO 4-meter Mayall reflector located at Kitt Peak. The original Mayall utilizes a split-ring equatorial suspension design and was built in the early 1970's, seeing first light in February 1973. It has a twin at NOAO's Cerro Tololo Observatory in Chile. It was one of the first of the 4-meter class telescopes and the last of the large series to utilize equatorial mountings. During the 1960s it was the largest telescope in the world available by peer-reviewed proposal without institutional priority.

Originally a photographic, photoelectric and spectroscopic instrument with several foci, the Mayall currently uses a 6 megapixel CCD camera for observing infrared and faint visible light from distant objects. This model was transferred to NASM from NASA's Marshall Space Flight Center in 1974; it is now on display in the "Explore the Universe" gallery.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type MODELS-Miscellaneous Dimensions 3-D: 12.2 × 0.4 × 0.5cm (4 13/16 × 3/16 × 3/16 in.)
 Materials Copper Alloy
Paint
 Inventory Number A19800398002 Credit Line Transferred from the National Aeronautics and Space Administration Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.