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https://www.gemini.edu/documentation/webdocs/spe/spe-c-g0064.pdf
Gemini Primary Mirror Control System Software Design Description Issue 1.1 Page 13 of 76 05 January 1996 • Air Pressure Support System: This is the pressurised volume of air or ‘air bag’ under the mirror that complements the axial hydraulic support system.
http://adsabs.harvard.edu/abs/1994SPIE.2199..223S
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE(superscript TM) glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of …
https://www.deepdyve.com/lp/spie/gemini-primary-mirror-support-system-6krUgLKufk
Gemini primary mirror support system The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.
http://www.gemini.edu/documentation/webdocs/preprints/gpre61.pdf
The Gemini primary mirror support incorporates a system of hydraulic whiffletrees to carry the mirror weight and define its position. The six orthogonal kinematic degrees of freedom are controlled by six hydraulic zones -- three
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0030.pdf
The Gemini primary mirror support can be operated in several modes, including one mode in which the distributed defining system is divided into six zones. The six-zone defining system resists wind loading better than a kinematic system, because the mirror is coupled to the stiffness of the mirror cell.
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0017.pdf
Optimization of Support Point Locations and Force Levels of the Primary Mirror Support System Myung K. Cho Ronald S. Price Opto-structural Engineer Opto-mechanical Engineer November 5, 1993 GEMINI PROJECT OFFICE 950 N. Cherry Ave. Tucson, …
http://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0035.pdf
III. Mirror Support System The concept of the Gemini primary support system is shown inFigure 2(ref. 3). The primary mirror is supported on a uniform air pressure system, 120 axial supports and 72 lateral supports. Each axial and lateral support consists of a passive two-chamber hydraulic cylinder and an active mechanism.
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2199/0000/Gemini-primary-mirror-support-system/10.1117/12.176192.full
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE TM glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.Cited by: 17
http://www.gemini.edu/documentation/webdocs/preprints/gpre52.pdf
The Gemini Primary Mirror Control System (PCS) is a distributed system, responsible for all aspects of primary mirror control. Development started at the Royal Greenwich Observatory (RGO) in the UK in 1996, alongside development of the mirror support system.
https://www.gemini.edu/documentation/webdocs/spe/spe-c-g0064.pdf
Gemini Primary Mirror Control System Software Design Description Issue 1.1 Page 13 of 76 05 January 1996 • Air Pressure Support System: This is the pressurised volume of air or ‘air bag’ under the mirror that complements the axial hydraulic support system.
http://adsabs.harvard.edu/abs/1994SPIE.2199..223S
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE(superscript TM) glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of …
https://www.deepdyve.com/lp/spie/gemini-primary-mirror-support-system-6krUgLKufk
Gemini primary mirror support system The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.
http://www.gemini.edu/documentation/webdocs/preprints/gpre61.pdf
The Gemini primary mirror support incorporates a system of hydraulic whiffletrees to carry the mirror weight and define its position. The six orthogonal kinematic degrees of freedom are controlled by six hydraulic zones -- three
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0030.pdf
The Gemini primary mirror support can be operated in several modes, including one mode in which the distributed defining system is divided into six zones. The six-zone defining system resists wind loading better than a kinematic system, because the mirror is coupled to the stiffness of the mirror cell.
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0017.pdf
Optimization of Support Point Locations and Force Levels of the Primary Mirror Support System Myung K. Cho Ronald S. Price Opto-structural Engineer Opto-mechanical Engineer November 5, 1993 GEMINI PROJECT OFFICE 950 N. Cherry Ave. Tucson, …
http://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0035.pdf
III. Mirror Support System The concept of the Gemini primary support system is shown inFigure 2(ref. 3). The primary mirror is supported on a uniform air pressure system, 120 axial supports and 72 lateral supports. Each axial and lateral support consists of a passive two-chamber hydraulic cylinder and an active mechanism.
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2199/0000/Gemini-primary-mirror-support-system/10.1117/12.176192.full
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE TM glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.Cited by: 17
http://www.gemini.edu/documentation/webdocs/preprints/gpre52.pdf
The Gemini Primary Mirror Control System (PCS) is a distributed system, responsible for all aspects of primary mirror control. Development started at the Royal Greenwich Observatory (RGO) in the UK in 1996, alongside development of the mirror support system.
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2199/0000/Gemini-primary-mirror-support-system/10.1117/12.176192.full
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE TM glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.Cited by: 17
http://adsabs.harvard.edu/abs/1994SPIE.2199..223S
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE(superscript TM) glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of …
https://www.deepdyve.com/lp/spie/gemini-primary-mirror-support-system-6krUgLKufk
Gemini primary mirror support system The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.
http://www.gemini.edu/documentation/webdocs/preprints/gpre61.pdf
The Gemini primary mirror support incorporates a system of hydraulic whiffletrees to carry the mirror weight and define its position. The six orthogonal kinematic degrees of freedom are controlled by six hydraulic zones -- three
https://www.gemini.edu/documentation/webdocs/spe/spe-c-g0064.pdf
Gemini Primary Mirror Control System Software Design Description Issue 1.1 Page 6 of 76 05 January 1996 1.3.1 Co-ordinate system description For a full description of the co-ordinate system see [2] (Interface Control Document ICD-G-0008).
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0030.pdf
The Gemini primary mirror support can be operated in several modes, including one mode in which the distributed defining system is divided into six zones. The six-zone defining system resists wind loading better than a kinematic system, because the mirror is coupled to the stiffness of the mirror cell.
https://www.gemini.edu/documentation/webdocs/spe/spe-c-g0064.pdf
Gemini Primary Mirror Control System Software Design Description Issue 1.1 Page 13 of 76 05 January 1996 • Air Pressure Support System: This is the pressurised volume of air or ‘air bag’ under the mirror that complements the axial hydraulic support system.
http://adsabs.harvard.edu/abs/1994SPIE.2199..223S
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE(superscript TM) glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of …
https://www.deepdyve.com/lp/spie/gemini-primary-mirror-support-system-6krUgLKufk
Gemini primary mirror support system The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.
http://www.gemini.edu/documentation/webdocs/preprints/gpre61.pdf
The Gemini primary mirror support incorporates a system of hydraulic whiffletrees to carry the mirror weight and define its position. The six orthogonal kinematic degrees of freedom are controlled by six hydraulic zones -- three
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0030.pdf
The Gemini primary mirror support can be operated in several modes, including one mode in which the distributed defining system is divided into six zones. The six-zone defining system resists wind loading better than a kinematic system, because the mirror is coupled to the stiffness of the mirror cell.
https://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0017.pdf
Optimization of Support Point Locations and Force Levels of the Primary Mirror Support System Myung K. Cho Ronald S. Price Opto-structural Engineer Opto-mechanical Engineer November 5, 1993 GEMINI PROJECT OFFICE 950 N. Cherry Ave. Tucson, …
http://www.gemini.edu/documentation/webdocs/rpt/rpt-o-g0035.pdf
III. Mirror Support System The concept of the Gemini primary support system is shown inFigure 2(ref. 3). The primary mirror is supported on a uniform air pressure system, 120 axial supports and 72 lateral supports. Each axial and lateral support consists of a passive two-chamber hydraulic cylinder and an active mechanism.
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2199/0000/Gemini-primary-mirror-support-system/10.1117/12.176192.full
The primary mirror selected for the Gemini 8-m Telescopes is a thin meniscus made of Corning ULE TM glass. The conceptual design of the Gemini support system has evolved in response to the properties of the meniscus mirror and the functional requirements of the Gemini Telescopes.Cited by: 17
http://www.gemini.edu/documentation/webdocs/preprints/gpre52.pdf
The Gemini Primary Mirror Control System (PCS) is a distributed system, responsible for all aspects of primary mirror control. Development started at the Royal Greenwich Observatory (RGO) in the UK in 1996, alongside development of the mirror support system.
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2871/1/Gemini-primary-mirror-cell-design/10.1117/12.269051.full
To minimize the wind buffeting effect on the primary mirror figure, the Gemini primary mirror cell is designed to provide additional mirror stiffness by coupling the mirror to the cell structure through a six-zone hydraulic support system. Therefore the cell structure is designed as though it were a light weight mirror for minimum top...Cited by: 3
https://www.photonicsonline.com/doc/81-m-gemini-mirror-reaches-mountaintop-observ-0001
Mar 23, 2000 · An active optics support system of 120 actuators beneath the mirror and 60 actuators around the edge support the mirror and correct the figure for slowly-varying effects such as thermal distortion, gravitational sag, and inaccuracies in the mirror support system. The clear aperture of the primary is 8.0 m outside diameter, 1.2 m inside diameter.
https://wp.optics.arizona.edu/optomech/wp-content/uploads/sites/53/2016/10/Silver-Coatings-on-Large-Telescopes-Tutorial.pdf
is a wiffle tree assembly with a motor drive. The wiffle tree acts a structural support for the primary mirror when it is lowered into the vessel. Since the Gemini primary mirror is made from ULE-581, with a thickness of 20 cm and a weight of 22,200 kg, it cannot support itself. The wiffle tree assures that the mirror is fully supported.
http://www.mmto.org/MMTpapers/pdfs/spie98.pap2.pdf
2 This paper describes the active support system for the 6.5 m primary mirror of the MMT Conversion,7 and in particular the optimization of axial forces after the initial installation of the mirror in its telescope support cell.
https://www2.gemini.edu/images/pio/newsletters/pdf/gf_1298.pdf
The first primary mirror being transported up Mauna Kea in June 1998. The acceptance tests for the first primary mirror at Gemini North, October 1998. Gemini Newsletter #17 - December 1998 1 ... staff in Tucson to support construction, contracting, and a variety of other activities.
http://www.ifa.hawaii.edu/~hodapp/Hodapp-2003-PASP-115-1388.pdf
The Gemini Near-Infrared Imager (NIRI) istheprimarynear-infrared (NIR) imaging instrument at the Gemini North tele- ... measurements to the primary-mirror support system. For many operating modes of NIRI, a guiding precision of better than 0.1 pixels hr 1 is required in order not to significantly degrade
https://www.noao.edu/noao/noaonews/sep99/node20.html
SOAR Telescope Project Starts Construction. ... Figure 3: Sketch of the primary mirror support system ... SOAR will be able to utilize space and facilities at Gemini-South telescope, 400m away. In particular, the SOAR primary mirror will be recoated in Gemini's facility.
https://ui.adsabs.harvard.edu/abs/1994SPIE.2199..841C/abstract
A parametric study was performed to optimize the support systems of a large primary mirror. In order to analyze the support pattern locations and the levels of the support forces, finite element models of the primary mirror were employed. Influence matrices for the axial defining supports were established by combining sets of unit load cases which were applied at each of the selected support ...
https://www.gmto.org/Resources/GMT-ID-01454-GMT_WIND_VIBRATION_ANALYSES_SPIE.pdf
In the FEM, the primary mirror segments, the primary mirror cells, the cell-connector frame, the C-ring structures, the instrument platform, the azimuth disk, and the OSS pedestals are modeled by plate elements. The hexapod mirror support, the secondary truss, the secondary support structure, and all the braces are modeled by beam elements.
https://www.noao.edu/system/gsmt/book/
4.5.B. Image Motion and Image Quality of the GSMT Optical System (PDF) 4.5.C. Conceptual Design of Primary Mirror Segment Support System of the GSMT Point Design (PDF) 4.5.D.Design Study For Testing primary Mirror Segments From A 30-M GSMT Using A Test Plate With Computer Generated Hologram CGH (PDF)
https://www.cloudynights.com/topic/688555-mirror-cell-design/
Jun 10, 2018 · Page 1 of 2 - Mirror Cell Design - posted in ATM, Optics and DIY Forum: I am in the process of designing a light weight (portable) 16 f/4.5. The one thing that I cannot find is information on primary mirror cell design. Is there a thread on CN with this type of information? (And yes I paged down several pages in the ATM, Optics and DIY Forum.
http://www.cds.caltech.edu/~macmardg/pubs/M1perf_SPIE2010.pdf
The principal dynamic disturbances acting on a telescope segmented primary mirror are unsteady wind pressure (turbulence) and narrowband vibration from rotating equipment. Understanding these disturbances is essential for the design of the segment support assembly (SSA), segment actuators, and primary mirror control system (M1CS).
https://www.nsf.gov/pubs/1998/gem_ar97/gem_ar97.pdf
Mauna Kea dome and support facility, August 1997 Telescope structure preassembled at NFM, July ... primary mirror (M1) for the Gemini North telescope was accepted at REOSC in France. Its intrinsic sur- ... 8 Completion of Control System Simulator 7/10/96 9 Deliver Telescope Structure - Mauna Kea 8/1/97 ...
https://core.ac.uk/display/101156663
Abstract. The Gemini primary mirror support incorporates a system of hydraulic whiffletrees to carry the mirror weight and define its position. The six orthogonal kinematic degrees of freedom are controlled by six hydraulic zones-- three axial, two lateral, plus a transverse lateral.
http://agoptical.com/12-5-imaging-harmer-wynne/
The optional state-of-the-art Optec Gemini rotating focuser is a perfect match to the 12.5″ iHW providing precision focusing capability, image train rotation, and heavy payload capability. The electronic control system included with the Gemini focuser allows the Gemini to be controlled by any ASCOM compatible autofocus software program.
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