23 June 2006 The second-generation CCD/Transit Instrument (CTI-II) precision astrometric and photometric survey
Author Affiliations +
Abstract
We are implementing the second-generation CCD/Transit Instrument (CTI-II), a unique 1.8-m imaging astrometric and photometric telescope. We discuss design aspects of CTI-II, including the optical system, structure, focal plane mosaic and the detector readout system that allows precise astrometric and photometric measurements. The scientific design drivers for the imaging telescope include discovery and measurement of motion and distance for late M, L and T stars, synoptic photometric monitoring of active galactic nuclei (AGN), and discovery and near real-time spectroscopic followup of distant supernovae and AGN outbursts. These projects drive the design of the wide field-of-view stationary telescope that employs the time-delay and integrate (TDI) readout mode for CCD detectors to produce a deep, multicolor image of the sky every clear night. Nightly observation of the same strip of the sky produces the time domain photometric and repeated astrometric measurements required by the science drivers. The telescope, its focal plane mosaic and the data system all incorporate unique and innovative elements that support an unbiased survey of the sky with intensive time-domain sampling. We review these aspects of the project, and describe steps taken to support the astrometric and photometric precision required by the scientific mission of the telescope.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John T. McGraw, John T. McGraw, Mark R. Ackermann, Mark R. Ackermann, Walter H. Gerstle, Walter H. Gerstle, Tom Williams, Tom Williams, Peter C. Zimmer, Peter C. Zimmer, } "The second-generation CCD/Transit Instrument (CTI-II) precision astrometric and photometric survey", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62673T (23 June 2006); doi: 10.1117/12.672496; https://doi.org/10.1117/12.672496
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

Suomi-NPP VIIRS day/night band calibration with stars
Proceedings of SPIE (September 07 2015)
Midas Package For The Reduction Of Echelle Spectra
Proceedings of SPIE (October 12 1986)
Time resolved astronomy with the SALT
Proceedings of SPIE (July 20 2010)
CCDs for the rotational velocity spectrometer on GAIA
Proceedings of SPIE (February 18 2004)

Back to Top