At the end of the year we intend to move parts of GHOST to Gemini South for testing , including the AAO-built Cassegrain unit ( part of which is seen in Figure 7 , previous page ), and prototype optical cable assembly . AAO plans to send the slit viewing assembly and science-grade optical cable shortly thereafter . The controlling computer , loaded with software from the Australian National University , will go to the National Research Council Canada-Herzberg in Victoria , Canada , for integration with the spectrograph and thermal enclosure built there . Meanwhile , multiple suppliers are processing the many spectrograph optics , such as the GHOST collimator mirror ( Figure 9 ). A little over a year from now , these assem- blies are slated to ship from Canada to Chile , where they will be coupled with the Cassegrain unit . Once completed , GHOST begins testing and commissioning on the Gemini South telescope .
— David Henderson
Gemini South Laser Nears Installation
Progress continues for the new TOPTICA laser for the Gemini Multi-conjugate adaptive optics System ( GeMS ). TOPTICA staff in Munich , Germany , recently found the source of the bug that was causing an intermittent Interlock error . On June 20th , the laser passed the post-shipping acceptance testing . The
Figure 8 . GHOST team in North Ryde , Australia . Clockwise around the table : Jon Nielsen , Tony Farrell , Peter Young , Jennifer Dunn , Steve Margheim , Vlad Churilov , Ross Zhelem , Mick Edgar , Lew Waller , Richard McDermid , John Bassett , Greg Burley , Mike Ireland , and John Pazder . Photo credit : David Henderson
Figure 9 . GHOST collimator mirror after aspheric polishing . Photo credit : Precision Asphere , Inc .
January 2018 / 2017 Year in Review
GeminiFocus
Figure 10 . The TOPTICA Laser Interlock System Data Manager screen . Angelic Ebbers developed it as part of the Experimental Physics and Industrial Control System ( EPICS ) code to interact with existing parts of Gemini South telescope ’ s safety subsystems . It also interacts with the safety aspects and feedbacks of the TOPTICA Systems ; Paul Collins developed the latter in a Programmable Logic Controller environment .
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