BVIT: A Visible Imaging, Photon Counting Instrument on the Southern African Large Telescope for High Time Resolution Astronomy
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- 作者：Jason B. McPhate ; Oswald H.W. Siegmund ; Barry Y. Welsh ; John V. Vallerga ; David A.H. Buckley ; Am ; a A.S. Gulbis ; Janus D. Brink ; Doug Rogers
- 关键词：visible ; photon counting ; imaging ; high time resolution ; SALT
- 刊名：Physics Procedia
- 出版年：2012
- 出版时间：2012
- 年：2012
- 卷：37
- 期：Complete
- 页码：1453-1460
- 全文大小：428 K
文摘
The Berkeley Visible Imaging Tube (BVIT) was installed on the Southern African Large Telescope (SALT) in January 2009 and subsequently refurbished in August 2010. BVIT is an imaging, photon counting camera with multi-color (B, V, R, and H-¦Á) capability. At the heart of BVIT is a 25 mm diameter active area, microchannel plate, sealed tube device with a visible photocathode and a cross-delay line readout. For each detected event the readout electronics record an X, Y position, an event pulse size (P), and an arrival time (T) ¡ª recorded with 25 ns precision. Post-acquisition processing of the X, Y, P, and T photon lists can be used to build images and light curves (to whatever sampling rate is supported by the signal to noise of the source as detected). The instrument design is presented as well as some examples of data acquired with the instrument on SALT.