BACHES A Compact Light-Weight Echelle Spectrograph for Amateur Astronomy

Details BACHES A Compact Light-Weight Echelle Spectrograph for Amateur Astronomy BACHES A Compact Light-Weight Echelle Spectrograph for Amateur Astronomy

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007msngr.129...62a&link_type=abstract

The Messenger, vol. 129, p. 62-64

Physics

1

Scientific paper

BACHES is a low-cost, light-weight echelle spectrograph suitable for observations of bright stars coupled with small telescopes up to 35 cm (14?) in diameter. The resolving power reaches 19000 in a continuous spectral range between 390 and 750 nm. The throughput of the instrument including the telescope and detector is 11% peak at 500 nm. With this efficiency spectra of stars of visual magnitude 5 can be obtained in 15 min exposure with a S/N of 50. One of the goals of the instrument is to monitor the spectral variability of Balmer emission lines in Be stars.

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