We are upgrading the repository! A content freeze is in effect until December 6th, 2024 - no new submissions will be accepted; however, all content already published will remain publicly available. Please reach out to repository@u.library.arizona.edu with your questions, or if you are a UA affiliate who needs to make content available soon. Note that any new user accounts created after September 22, 2024 will need to be recreated by the user in November after our migration is completed.

Show simple item record

Production of 8.4 m primary mirror segments for GMT

dc.contributor.authorMartin, H.M.
dc.contributor.authorCeragioli, R.
dc.contributor.authorGasho, V.
dc.contributor.authorJannuzi, B.T.
dc.contributor.authorKim, D.W.
dc.contributor.authorKingsley, J.S.
dc.contributor.authorLaw, K.
dc.contributor.authorLoeff, A.
dc.contributor.authorLutz, R.D.
dc.contributor.authorMeyen, S.
dc.contributor.authorOh, C.J.
dc.contributor.authorTuell, M.T.
dc.contributor.authorWeinberger, S.N.
dc.contributor.authorWest, S.C.
dc.contributor.authorWhitsitt, R.
dc.contributor.authorWortley, R.
dc.date.accessioned2022-12-15T22:40:56Z
dc.date.available2022-12-15T22:40:56Z
dc.date.issued2022
dc.identifier.citationMartin, H. M., Ceragioli, R., Gasho, V., Jannuzi, B. T., Kim, D. W., Kingsley, J. S., Law, K., Loeff, A., Lutz, R. D., Meyen, S., Oh, C. J., Tuell, M. T., Weinberger, S. N., West, S. C., Whitsitt, R., & Wortley, R. (2022). Production of 8.4 m primary mirror segments for GMT. Proceedings of SPIE - The International Society for Optical Engineering, 12188.
dc.identifier.isbn9781510653573
dc.identifier.issn0277-786X
dc.identifier.doi10.1117/12.2630378
dc.identifier.urihttp://hdl.handle.net/10150/667187
dc.description.abstractThe Richard F. Caris Mirror Lab at the University of Arizona continues production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT's 25 m primary mirror consists of a center segment surrounded by six off-axis segments, with an additional off-axis segment to allow continuous operation as segments are removed for coating. We cast the sixth segment (5 off-axis segments + center segment) in March 2021. As of June 2022 we have tentatively completed polishing of the third off-axis segment, and we are in the process of grinding the optical surface of off-axis Segment 5. For Segment 3, we improved the measurement accuracy for small-scale structure near the edge of the mirror, which has been a challenge for the off-axis segments. In addition to full-aperture interferometry and deflectometry, we used a 20 cm test plate to obtain high-resolution interferometric measurements of the edge. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
dc.language.isoen
dc.publisherSPIE
dc.rightsCopyright © 2022 SPIE.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectaspheres
dc.subjectGiant Magellan Telescope
dc.subjectoff-axis
dc.subjectoptical fabrication
dc.subjectoptical testing
dc.subjecttelescopes
dc.titleProduction of 8.4 m primary mirror segments for GMT
dc.typeProceedings
dc.typetext
dc.contributor.departmentSteward Observatory, University of Arizona
dc.contributor.departmentCollege of Optical Sciences, University of Arizona
dc.identifier.journalProceedings of SPIE - The International Society for Optical Engineering
dc.description.noteImmediate access
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleProceedings of SPIE - The International Society for Optical Engineering
refterms.dateFOA2022-12-15T22:40:56Z


Files in this item

Thumbnail
Name:
121880J.pdf
Size:
28.48Mb
Format:
PDF
Description:
Final Published Version
Download

This item appears in the following Collection(s)

Show simple item record