Abstract Details
| Name: Sunetra Giridhar Affiliation: Indian Institute of Astrophysics Conference ID: ASI2016_765 Title : HESP: an echelle spectrograph for 2m HCT Authors and Co-Authors : Sunetra Giridhar, T.Sivarani et al. Indian Institute of Astrophysics, Bangalore Abstract Type : Invited Abstract Category : Instrumentation and Techniques Abstract : A new echelle spectrograph has been commissioned for the 2m Himalayan Chandra Telescope (HCT) at Indian Astronomical Observatory(IAO), Hanle in 2015. The Hanle Echelle Spectrograph (HESP) has been designed as facility instrument to support a large number of astronomical programs requiring high spectral resolution. The key features of the spectrograph are (i) a large continuous spectral coverage (350-1000nm) in a CCD single frame, (ii) High throughput (22\%) at the 500nm (iii) very low scattered light (less than 1.5\% (iv) double fiber for simultaneously recording star+sky or star+arc spectra with inter-order spacing larger than 30 pixels (v) resolution of 30,000 in unsliced and 60,000 in sliced mode (vi) high mechanical stability. In this article we present the results from the first light and commissioning run. The preliminary results indicate that the instrument meets the technical specifications and hence can support the science goals such as astrochemistry, exoplanets, galactic evolution and study of late stage of stellar evolution. |