| Name: | Kishan Malaviya |
| Affiliation: | St. Xavier's College Ahmedabad |
| Conference ID : | ASI2023_309 |
| Title : | Open-source toolchains and Python modules for estimating focal-plane image performance of astronomical telescopes |
| Authors : | Kishan Malaviya (kishanmalaviya35@gmail.com) -- St. Xavier's College - Ahmedabad,
Anwesh Kumar Mishra (anwesh@prl.res.in), -- Physical Research Laboratory, Ahmedabad,
Shashikiran Ganesh (shashi@prl.res.in) -- Physical Research Laboratory, Ahmedabad |
| Mode of Presentation: | Poster |
| Abstract Category : | Instrumentation and Techniques |
| Abstract : | We present optical simulations using free/open-source software - POPPY
(Physical Optics Propagation through Python) and RAYOPTICS – for estimating effects of diffraction and optical aberration on the quality of image obtained by astronomical telescopes. Poppy is a software developed to estimate the Point Spread Function(PSF) of the James Webb Space Telescope (JWST) and is now available as an open-source python module. We have implemented the object-oriented framework of POPPY to model the 1.2M telescope of Mount Abu Infrared Observatory (MIRO). We have simulated the primary and secondary mirror apertures as well as the obstruction created by the secondary support structure to obtain the two-dimensional PSF of the telescope. The PSF, encircled energy profiles and radial profiles are obtained at different wavelengths -- spanning the visible to Near-infrared wavelengths (400nm to 2500 nm) – thus quantifying the resolution of the telescope. Owing to inherent good seeing at the site of MIRO, this analysis is of particular importance for upcoming infrared instrumentation projects such as the Near Infrared Imager Spectrometer and Polarimeter (NISP). RAYOPTICS is a fully open-source software based on Python and PyQT . It is capable of raytracing optical elements in both CLI and GUI modes and can also import ZEMAX design files. The open-source nature of the software is promising for the scientific community in general. We have created a sequential model of the 1.2 M telescope within RAYOPTICS to produce the ray diagram, spot diagrams and Seidel aberration plots for analysing the contributions of optical aberrations considering the optical parameters such as radius of curvature and asphericity. The methods and techniques employed here can be generalised for image quality analysis of any telescope as well as different optical systems.
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