ATLAS: a Cassegrain spectrograph based on volume phase holographic gratings

Abstract

We are proposing a new spectrograph (ATLAS) which would revolutionise intermediate-dispersion observations at the AAT. Based on the new technology of Volume Phase Holographic gratings, and using transmission optics, ATLAS offers high throughput and a wide field (24'). It will be ideally suited to extensive surveys of faint objects. It has been designed with a collimated beam diameter of 150 mm, giving resolution lambda/delta lambda up to nearly 10,000 with a 1.5 arcsecond slit and good efficiency. It will be a dual-beam instrument, to maximise observing speed and allow optimised optical coatings to be used. The project is working towards its Concept Design Review which will occur during 2000.

arXiv comment9 pages, 6 figures, postscript from MS Word. To be published in Proc. SPIE Conf. 4008 on 'Optical and IR Telescope Instrumentation and Detectors' held in Munich, March 2000

References in corpus (1)

• TTF: a flexible approach to narrowband imaging

Cited by in corpus (3)

• Volume Phase Holographic Gratings: Polarization Properties and Diffraction Efficiency
• A Tunable Echelle Imager
• The Circumgalactic H$\alpha$ Spectrograph (CH$\alpha$S) I. Design, Engineering, and Early Commissioning