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Gemini North primary mirror glass repair after fracture incident
Indexado
WoS WOS:001327600100016
Scopus SCOPUS_ID:85201817991
DOI 10.1117/12.3017137
Año 2024
Tipo proceedings paper

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



In October 2022, there was an accident with the Gemini North Primary Mirror (M1) during routine mirror movements that caused it to come in contact with its washcart. The M1 came into contact with an earthquake restraint on the washcart as it was being moved in preparation for stripping and recoating activities. After the incident, analyses were conducted to determine the extent of the damage and the necessary steps to restore the telescope to normal operations. The extent of the fracture was determined by through visual inspection, and by observing stress polarization within the glass. Due to damage occurring along one of the lateral supports on the M1, it was first necessary to determine a safe method for removal. Grinding and polishing work of the damaged areas was then necessary to secure the glass and remove any stress. It was then necessary to bond a new lateral support to the M1 to prevent higher order aberrations from the asymmetrical support. Since a small change in the location of the support was necessary, a finite element analysis was performed to determine how its new location would affect optical aberrations on the M1. Test samples were produced to verify the performance of the new bond. This paper provides detailed explanations how the Gemini North telescope was returned to normal operations.

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Disciplinas de Investigación



WOS
Sin Disciplinas
Scopus
Computer Science Applications
Electrical And Electronic Engineering
Electronic, Optical And Magnetic Materials
Applied Mathematics
Condensed Matter Physics
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Schneider, Thomas S. - Gemini Observatory - Estados Unidos
Observatorio Gemini - Estados Unidos
2 Cho, Myung K. - NOIRLab - Estados Unidos
NSFs Natl Opt Infrared Astron Res Lab - Estados Unidos
3 Poczulp, Gary - NOIRLab - Estados Unidos
NSFs Natl Opt Infrared Astron Res Lab - Estados Unidos
4 Smither, Katie - Gemini Observatory - Estados Unidos
Observatorio Gemini - Estados Unidos
5 Ah Hee, Clayton -
5 Hee, Clayton Ah -
6 Cavedoni, Charles Hombre Gemini Observatory - Estados Unidos
Observatorio Gemini - Estados Unidos
7 Carr, Heather Mujer Gemini Observatory - Estados Unidos
Observatorio Gemini - Estados Unidos
8 Harris, Ron Hombre NOIRLab - Estados Unidos
NSFs Natl Opt Infrared Astron Res Lab - Estados Unidos
9 Kang, Stacy Mujer Gemini Observatory - Estados Unidos
Observatorio Gemini - Estados Unidos
10 Bucki, Slawomir - NOIRLab - Estados Unidos
NSFs Natl Opt Infrared Astron Res Lab - Estados Unidos
11 Hayward, Thomas L. Hombre Gemini ObservatorySouthern Operations Center - Chile
Observatorio Gemini - Chile
12 Marshall, HK -
13 Spyromilio, J -
14 Usuda, T -

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Financiamiento



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Agradecimientos



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