Megacam: A Wide-Field CCD Imager for the MMT and Magellan
Megacam is a large-format optical camera that can be operated at the f/5 Cassegrain foci of the MMT on Mount Hopkins, Arizona, and the Magellan Clay telescope at Las Campanas Observatory, Chile. Megacam's focal plane is composed of 36 closely packed e2v CCD42-90 CCDs, each with 2048 × 4608 pixe...
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| Veröffentlicht in: | Publications of the Astronomical Society of the Pacific 2015-04, Vol.127 (950), p.366-382 |
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| creator | McLeod, Brian Geary, John Conroy, Maureen Fabricant, Daniel Ordway, Mark Szentgyorgyi, Andrew Amato, Stephen Ashby, Matthew Caldwell, Nelson Curley, Dylan Gauron, Thomas Holman, Matthew Norton, Timothy Pieri, Mario Roll, John Weaver, David Zajac, Joseph Palunas, Povilas Osip, David |
| description | Megacam is a large-format optical camera that can be operated at the f/5 Cassegrain foci of the MMT on Mount Hopkins, Arizona, and the Magellan Clay telescope at Las Campanas Observatory, Chile. Megacam's focal plane is composed of 36 closely packed e2v CCD42-90 CCDs, each with 2048 × 4608 pixels, assembled in an 18,432 × 18,432 array. Two additional CCD42-90s are provided for autoguiding and focus control. The CCDs have 13.5 μm square pixels that subtend at the f/5 foci, yielding a 25′ × 25′ field-of-view. The camera system includes a focal plane shutter, two filter wheels, two liquid nitrogen reservoirs, a central chamber that holds the CCD mosaic array, and two electronics boxes. Megacam is equipped with a variety of broadband and narrowband filters. Software features include automatic calculation of twilight flat exposure times. |
| doi_str_mv | 10.1086/680687 |
| format | Article |
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| source | IOP Publishing Journals; JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection |
| subjects | Astronomical objects Astronomical photometry Ellipticity Galaxies Instrumentation Mosaic Pixels Reflecting telescopes Sensors Stars Telescopes |
| title | Megacam: A Wide-Field CCD Imager for the MMT and Magellan |
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