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http://hdl.handle.net/2248/5311
Title: | Fiber-fed echelle spectrometer of the 2.34 meter Vainu Bappu Telescope |
Authors: | Kameswara Rao, N Sriram, S Gabriel, F Prasad, B. R Samson, J. P. A Jayakumar, K Srinivasan, R Mahesh, P. K Giridhar, S |
Issue Date: | Dec-2004 |
Publisher: | Anita Publications |
Citation: | Asian Journal of Physics, Vol. 13, No. 3&4, pp. 267-276 |
Abstract: | The optical design and performance of high resolution fiber-fed echelle spectrometer for the 2.34 meter Vainu Bappu Telescope (VBT) is described. An optical fiber of core 100 J-Lm and length 45 meter is used to link the spectrometer with the telescope. The instrument provides a resolving power of 72,000 (4 Km/s) with a 60 J-Lm slit and provides continuous coverage with gaps for ). < 1 J-Lm. The spectrum is recorded on a thinned back-illuminated Marconi 2048 x 4096, 15 J-Lm square pixel, charge coupled device (CCD) detector. The wavelength coverage in a single order varies from roughly 35Aat ,\ = 4050A(range 4030A- 4065A) to 70A(range 8465A- 8535A).The present overall efficiency of the spectrometer at 6000Ais about 10%. The operation of the spectrometer and object acquisition and guiding at the telescope end is described. Some of the observed spectra from VBT are also illustrated. |
URI: | http://hdl.handle.net/2248/5311 |
Appears in Collections: | IIAP Publications |
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File | Description | Size | Format | |
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Fiber-fed echelle spectrometer of the 2.34 meter Vainu Bappu Telescope | 262.41 kB | Adobe PDF | ![]() View/Open |
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