Abstract Details
| Name: AMITESH OMAR Affiliation: ARIES Nainital Conference ID: ASI2018_553 Title : A FOSC-type spectrograph for 3.6-m Devasthal Optical Telescope Authors and Co-Authors : T.S. Kumar, B. Krishnareddy, Jayshreekar Pant, Manoj Mahto (on behalf of a larger team), ARIES, Nainital. Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : An optical imager-cum-spectrograph has been developed and is under commissioning for the 3.6-m Devasthal Optical telescope (DOT), the largest optical-near infrared telescope in India. The spectrograph is similar to Faint Object Spectrograph Camera (FOSC)-type instruments on various 2-m class and larger optical telescopes. The spectrograph weighing nearly 500 Kg is designed and assembled within India. The spectrograph is mounted directly on the Cassegrain focal port of the DOT. This spectrograph can perform low dispersion optical spectroscopy and color photometry in various optical bands using combinations of slits, grisms, and filters. The spectrograph uses a 4Kx4K CCD camera, also developed in ARIES. The spectrograph can also be configured with a fast EMCCD camera, a wedge-prism, and a GPS timing system to perform fast (milli-second) multi-color photometry/spectroscopy for dedicated or coordinated observations with other telescopes. The details of the system along with the images taken using this instrument on the 3.6-m DOT will be presented. |