9 August 2016 Impact of optical distortions on fiber positioning in the dark energy spectroscopic instrument
Author Affiliations +
The Dark Energy Spectroscopic Instrument, to be located at the prime focus of the Mayall telescope, includes a wide field corrector, a 5000 fiber positioner system, and a fiber view camera. The mapping of the sky to the focal plane, needed to position the fibers accurately, is described in detail. A major challenge is dealing with the large amount of distortion introduced by the optics (of order 10% scale change), including time-dependent non-axisymmetric distortions introduced by the atmospheric dispersion compensator. Solutions are presented to measure or mitigate these effects.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen Kent, Stephen Kent, Michael Lampton, Michael Lampton, A. Peter Doel, A. Peter Doel, David Brooks, David Brooks, Tim Miller, Tim Miller, Robert Besuner, Robert Besuner, Joe Silber, Joe Silber, Ming Liang, Ming Liang, David Sprayberry, David Sprayberry, Charles Baltay, Charles Baltay, David Rabinowitz, David Rabinowitz, } "Impact of optical distortions on fiber positioning in the dark energy spectroscopic instrument", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99088F (9 August 2016); doi: 10.1117/12.2232689; https://doi.org/10.1117/12.2232689


Mosaic3 a red sensitive upgrade for the prime focus...
Proceedings of SPIE (August 08 2016)
Measuring system of fiber position of LAMOST
Proceedings of SPIE (September 28 2004)
PS2 managing the next step in the Pan STARRS...
Proceedings of SPIE (September 24 2012)
LBC the prime focus optical imagers at the LBT...
Proceedings of SPIE (March 06 2003)

Back to Top