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.
@article{arxiv.astro-ph/0006378,
title = {ATLAS: a Cassegrain spectrograph based on volume phase holographic gratings},
author = {J. G. Robertson and K. Taylor and I. K. Baldry and P. R. Gillingham and S. C. Barden},
journal= {arXiv preprint arXiv:astro-ph/0006378},
year = {2015}
}
Comments
9 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