The hardware control system for WEAVE at the William Herschel Telescope

Date Issued
2018
Author(s)
Delgado, Jose Miguel
•
Menéndez Mendoza, Saúl
•
Burgal, Jose Alonso
•
Herreros, Jose Miguel
•
Picó, Sergio
•
Abrams, Don Carlos
•
Martin, Carlos
•
Cano, Diego
•
Gribbin, F. J.
•
Skvarč, Jure
•
Dee, Kevin
•
Lhome, Emilie
•
Dalton, Gavin
•
Middleton, Kevin
•
Trager, Scott
•
L. Aguerri, J. Alfonso
•
•
•
Carrasco, Esperanza
DOI
Abstract
When an alt-azimuth telescope is tracking at a specific field, it is necessary to use a de-rotator system to compensate the Earth's rotation of the field of view. In order, to keep the telescope tracking the field of view selected, the instrument will need to a rotation system for compensating it [1]. The new WEAVE [2] two degrees field of view requires a new field de-rotator on the top-end of the telescope. The rotator system has been designed with a direct drive motor which eliminates the need for mechanical transmission elements such as gearboxes, speed reducers, and worm gear drives. This design is a huge advantage for the system performance and lifetime because it eliminates undesirable characteristics such as long-time drift, elasticity, and backlash. The hardware control system has been developed with a Rockwell servo-drive and controller. The rotator has to be controlled by the high-level software which is also responsible for the telescope control. This paper summarizes the model developed for simulating and the software which will be used to accept the rotator system. A performance study is also carried out to test the CIP (Common Industrial Protocol) for communications between the high-level software and the rotator hardware.
Coverage
Ground-based and Airborne Telescopes VII
All editors
Marshall, Heather K.; Spyromilio, Jason
Series
Volume
10700
Start page
1070033
Conferenece
Ground-based and Airborne Telescopes VII
Conferenece place
Austin, Texas, United States
Conferenece date
10-15 June, 2018
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2018SPIE10700E..33D
Rights
open.access
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