| Name: | Mudit Srivastava |
| Affiliation: | Physical Research Laboratory, Ahmedabad |
| Conference ID : | ASI2023_135 |
| Title : | Designs of M-FOSC-EP and ProtoPol: Spectro-Polarimeters for PRL 1.2m and 2.5m Telescopes |
| Authors : | Mudit K. Srivastava, Vipin Kumar, Vaibhav Dixit, Bhavesh Mistry, Kevikumar Lad, Ankita Patel, and Arvind S. Rajpurohit (Physical Research Laboratory, Ahmedabad) |
| Mode of Presentation: | Oral |
| Abstract Category : | Instrumentation and Techniques |
| Abstract : | M-FOSC-EP (Mt. Abu Faint Object Spectrograph and Camera-Echelle Polarimeter) is an upcoming two-channel instrument for visible wavelengths (382-1000 nm), which is currently being designed for the recently established PRL 2.5m telescope at Mt. Abu. M-FOSC-EP would provide the functionalities of seeing limited imaging and low-resolution spectroscopy (R~500-700) in one channel and the capabilities of an intermediate resolution spectro-polarimeter (resolutions ~ 15000) in another channel. The instrument would utilize two separate camera optics and detector systems for each channel, while the common collimator optics would be used. The optical design of the instrument is completed, and components are currently being procured.
As a precursor of M-FOSC-EP, a prototype instrument (named ProtoPol) has also been designed using commercially available off-the-shelf optical and mechanical components. It would operate in the wavelength range from 381 to 977 nm and would record cross-dispersed spectra on an off-the-shelf 1024X1024 back-illuminated CCD at resolutions of ~6000. The prototype is currently being developed; off-the-shelf components have been procured, and the mechanical parts are being fabricated. ProtoPol can be used on both 1.2m and 2.5m PRL telescopes with suitable mechanical interfaces.
In this proposed talk, the speaker shall discuss the scientific objectives of M-FOSC-EP, its expected performance and its finalized optical design configuration. The optical and opto-mechanical designs of ProtoPol shall also be presented. As ProtoPol is currently being assembled, its laboratory performance will also be presented. |
