Experimental study of an advanced concept of moderate-resolution holographic spectrographs

Abstract

We present the results of an experimental study of an advanced moderate-resolution spectrograph based on a cascade of narrow-band holographic gratings. The main goal of the project is to achieve a moderately high spectral resolutionwith R up to 5000 simultaneously in the 4300-6800 A visible spectral range on a single standard CCD, together with an increased throughput. The experimental study consisted of (1) resolution and image quality tests performed using the solar spectrum; and (2) a total throughput test performed for a number of wavelengths using a calibrated lab monochromator. The measured spectral resolving power reaches values over R>4000 while the experimental throughput is as high as 55%, which is in good agreement with the modeling results. Comparing the obtained characteristics of the spectrograph under consideration with the best existing spectrographs, we conclude that the used concept can be considered a very competitive and cheap alternative to the existing spectrographs of the given class. We propose several astrophysical applications for the instrument and discuss the prospect of creating its full-scale version.

arXiv comment22 pages, 7 figures

References in corpus (21)

• X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
• The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit
• The SCORPIO focal reducer
• Prime Focus Spectrograph (PFS) for the Subaru Telescope: Overview, recent progress, and future perspectives
• Atmospheric extinction properties above Mauna Kea from the Nearby Supernova Factory spectro-photometric data set
• Supercritical Accretion Discs in Ultraluminous X-ray Sources and SS 433
• On the incidence of weak magnetic fields in DA white dwarfs
• M31N 2008-12a - the remarkable recurrent nova in M31: Pan-chromatic observations of the 2015 eruption
• The Wolf-Rayet Content of M31
• A search for kilogauss magnetic fields in white dwarfs and hot subdwarf stars
• Crowded field 3D spectroscopy of LBV candidates in M33
• New Luminous Blue Variables in the Andromeda galaxy
• Optical Spectroscopy of GX339-4 During the High-Soft and Low-Hard States (Paper I)
• Grisms Developed for FOCAS
• Towards a dynamical mass of the ultraluminous X-ray source NGC 5408 X-1
• The nova-like nebular optical spectrum of V404 Cygni at the beginning of the 2015 outburst decay
• Generalized multi-polytropic Rankine-Hugoniot relations and the entropy condition
• A comparison of spectroscopic methods for detecting starlight scattered by transiting hot Jupiters, with application to Subaru data for HD 209458b and HD 189733b
• Moderate-Resolution Holographic Spectrograph
• Advanced modelling of a moderate-resolution holographic spectrograph
• Design and modeling of a moderate-resolution astronomic spectrograph with volume-phase holographic gratings