1. SHAPE -- A Spectro-Polarimeter Onboard Propulsion Module of Chandrayaan-3 Mission
- Author
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Nandi, Anuj, Singh, Swapnil, Jaiswal, Bhavesh, Jain, Anand, Verma, Smrati, Palawat, Reenu, T., Ravishankar B., Singh, Brajpal, Tyagi, Anurag, Das, Priyanka, Bose, Supratik, Verma, Supriya, Gautam, Waghmare Rahul, R., Yogesh Prasad K., Raha, Bijoy, Mendhekar, Bhavesh, K., Sathyanaryana Raju, V., Srinivasa Rao Kondapi, Kumar, Sumit, Thakur, Mukund Kumar, Bhatia, Vinti, Sharma, Nidhi, Yenni, Govinda Rao, Satya, Neeraj Kumar, Raghavendra, Venkata, S., Vivechana M., Justin, Evangelin Leeja, Karmakar, Praloy, Patra, Anurag, J., Naga Manjusha, Srikanth, Motamarri, Rajhans, Chinmay Kumar, K., Kalpana, and P, Veeramuthuvel
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Earth and Planetary Astrophysics - Abstract
SHAPE (Spectro-polarimetry of HAbitable Planet Earth) is an experiment onboard the Chandrayaan-3 Mission, designed to study the spectro-polarimetric signatures of the habitable planet Earth in the near-infrared (NIR) wavelength range (1.0 - 1.7 $\mu$m). The spectro-polarimeter is the only scientific payload (experimental in nature) on the Propulsion Module (PM) of the Chandrayaan-3 mission. The instrument is a compact and lightweight spectro-polarimeter with an Acousto-Optic Tunable Filter (AOTF) at its core. The AOTF operates in the frequency range of 80 MHz to 135 MHz with a power of 0.5 - 2.0 Watts. The two output beams (e-beam and o-beam) from the AOTF are focused onto two InGaAs detectors (pixelated, 1D linear array) with the help of focusing optics. The primary (aperture) optics, with a diameter of $\sim$2 mm, collects the NIR light for input to the AOTF, defining the field of view (FOV) of 2.6$^\circ$. The payload has a mass of 4.8 kg and operates at a power of 25 Watts. This manuscript highlights some of the ground-based results, including the post-launch initial performance of the payload while orbiting around the Moon to observe Earth., Comment: Accepted for publication in Journal of Aerospace Sciences and Technologies
- Published
- 2024