dc.contributor.author |
Kameswara Rao, N |
|
dc.contributor.author |
Sriram, S |
|
dc.contributor.author |
Gabriel, F |
|
dc.contributor.author |
Prasad, B. R |
|
dc.contributor.author |
Samson, J. P. A |
|
dc.contributor.author |
Jayakumar, K |
|
dc.contributor.author |
Srinivasan, R |
|
dc.contributor.author |
Mahesh, P. K |
|
dc.contributor.author |
Giridhar, S |
|
dc.date.accessioned |
2011-01-21T10:06:44Z |
|
dc.date.available |
2011-01-21T10:06:44Z |
|
dc.date.issued |
2004-12 |
|
dc.identifier.citation |
Asian Journal of Physics, Vol. 13, No. 3&4, pp. 267-276 |
en |
dc.identifier.uri |
http://hdl.handle.net/2248/5311 |
|
dc.description.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. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Anita Publications |
en |
dc.rights |
© Anita Publications |
en |
dc.title |
Fiber-fed echelle spectrometer of the 2.34 meter Vainu Bappu Telescope |
en |
dc.type |
Article |
en |