Preliminary Design of ARIES-Devasthal Faint Object Spectrograph and Camera

TL;DR

The paper details the preliminary design of ADFOSC, a versatile multi-mode instrument for imaging, spectroscopy, and polarimetry, intended for the new 3.6m telescope at Devasthal, covering 360-1000 nm with remote operation.

Contribution

It introduces the first design of a multi-mode instrument for the Devasthal telescope, enabling imaging, spectroscopy, and polarimetry in a single device.

Findings

Design specifications for broad- and narrow-band imaging

Spectroscopy and polarimetry capabilities included

Wavelength range from 360 to 1000 nm

Abstract

We present here the preliminary design of ARIES-Devasthal Faint Object Spectrograph and Camera (ADFOSC), which is a multi-mode instrument for both imaging and spectroscopy. ADFOSC is the first-generation instrument to be mounted at the axial port of the Cassegrain focus on our new 3.6m optical telescope to be installed at Devasthal, Nainital. The main design goals of the instrument are : the instrument will have capability of broad- and narrow-band imaging, low-medium resolution spectroscopy, and imaging polarimetry. The operating wavelength range will be from 360 to 1000 nm and the instrument will have remote-control capability.