Author Topic: SSLV D3 - XPoSat - FLP - TBD  (Read 2281 times)

Offline vyoma

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SSLV D3 - XPoSat - FLP - TBD
« on: 07/10/2022 11:01 pm »
XPoSat is a space observatory satellite being developed by ISRO and the Raman Research Institute. It'll be launched by SSLV, probably in Q4 2022.

Payloads on XPoSat:
1) POLIX (Polarimeter Instrument in X-rays) developed by the Raman Research Institute.
2) XSPECT (X-ray Spectroscopy and Timing) developed by URSC, ISRO.
« Last Edit: 05/31/2023 10:51 am by zubenelgenubi »

Offline vyoma

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Re: SSLV D?? - XPoSat - NET 2022
« Reply #1 on: 07/10/2022 11:03 pm »
POLIX payload information.
« Last Edit: 07/10/2022 11:07 pm by vyoma »

Offline vyoma

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Re: SSLV D?? - XPoSat - NET 2022
« Reply #2 on: 07/10/2022 11:09 pm »
XPoSat mission objectives.
« Last Edit: 07/10/2022 11:10 pm by vyoma »

Offline Steven Pietrobon

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Re: SSLV D?? - XPoSat - NET 2022
« Reply #3 on: 07/11/2022 08:13 am »
I don't remember where I got the information from, but my information is that XPoSat is flying on SSLV D3 in December 2022.
« Last Edit: 07/11/2022 08:15 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline vyoma

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Re: SSLV D?? - XPoSat - NET 2022
« Reply #4 on: 07/11/2022 04:37 pm »
I don't remember where I got the information from, but my information is that XPoSat is flying on SSLV D3 in December 2022.

Thanks, updated thread title.

Offline vyoma

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Re: SSLV D3 - XPoSat - NET 2022
« Reply #5 on: 07/11/2022 04:55 pm »
Quote
POLIX is an X-ray Polarimeter Instrument for Astronomical Observations under development at the Raman Research Institute. It is the only instrument in the energy band of medium energy X-rays, 8-30 keV, and is the main payload on the soon to be launched dedicated ISRO satellite XPoSat. A completely in-house design, and development, of the Qualification Model (QM) of POLIX was completed in the current year and has successfully undergone space qualification tests like vibration test and environmental test at the UR Rao Satellite Centre (URSC).

From Government of India, Department of Science and Technology Annual Report 2021-22: https://dst.gov.in/sites/default/files/Annual%20Report%202021-22%20%28English%29.pdf
« Last Edit: 07/11/2022 04:56 pm by vyoma »

Offline vyoma

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Re: SSLV D3 - XPoSat - NET 2022
« Reply #6 on: 07/13/2022 08:55 am »
From "Space Research in India" 2020-2021 report here:

Quote
XSPECT: X-ray spectroscopy and Timing on XPoSAT
XPoSat is Indias X-ray polarimeter mission carrying POLIX (A Thomson scattering polarimeter) and XSPECT (X-ray Spectroscopy and Timing) payloads. XSPECT is large area spectrometer payload and has a unique opportunity to observe astrophysical sources for very long durations to study their spectral and temporal variability in 0.8 to 15 keV x-ray band.

XSPECT is configured as two detector packages connected to a single electronics packages, which powers the detectors and does the necessary signal conditioning and has interface with spacecraft. Two different Field of Views (FOV) collimators, 2X2 and 3X3 are used enabling us to efficiently model-out the X-ray sky background. Swept Charge Device (SCD)s are used as detectors (effective area of ~35cm2 @ 6keV). These detectors enable XSPECT to have pile-up free observations at the expected count-rates with a very good energy resolution of less than ~ 200 eV @ 5.9keV. XSPECT provides a timing resolution of ~2 msec.

Quote
Polarimeter Instrument in X-rays (POlIX): The POLIX payload on-board XPOSAT aims at measuring the degree and direction of polarisation of X-ray photons from about 50 potential cosmic sources of interest in the energy band 8-30 keV. The instrument is being developed by Raman Research Institute, Bengaluru with the support of URSC.

Offline vyoma

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Re: SSLV D3 - XPoSat - NET 2022
« Reply #7 on: 07/13/2022 09:11 am »
From "Space Research in India" 2020-2021 report here:

Quote
X-ray Polarimeter (POlIX)

During the past few years, RRI has been designing and building an X- ray polarimeter (POLIX) instrument for astronomical observations. POLIX is the main payload onboard the small satellite mission of ISRO called XPoSat dedicated for X-ray polarization measurement from cosmic sources. X-ray polarimetry is an unexplored area in high energy astrophysics. X-ray polarization measurements can give valuable insights into (i) the strength and the distribution of magnetic field in the sources (ii) geometric anisotropies in the sources (iii) their alignment with respect to the line of sight and (iv) the nature of the accelerator responsible for energizing the electrons taking part in radiation and scattering. Development of the Qualification Model (QM) of the X-ray Polarimeter instrument POLIX has been completed and assembly and tests of the Flight Model (FM) is ongoing.

Offline vyoma

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Re: SSLV D3 - XPoSat - NET 2022
« Reply #8 on: 07/20/2022 06:27 pm »
Looks like launch planned in Q2 2023. From Lok Sabha (parliment) Q&A sessions: http://164.100.24.220/loksabhaquestions/annex/179/AU556.pdf [20 July 2022]

Budget sanctioned for the mission is ₹60 crore (~$7.5M at today's exchange rates).
« Last Edit: 07/20/2022 06:37 pm by vyoma »

Online zubenelgenubi

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Re: SSLV D3 - XPoSat - FLP - TBD
« Reply #9 on: 05/30/2023 10:41 am »
No mention of upcoming SSLV launches in recent months.  Apparently, we know ISRO's full orbital launch schedule through July 2023.  Thus launch must be NET July or August Q3.

For now, I have re-edited the the thread title from "NET Q3 2023" to date "TBD."

Edited
« Last Edit: 05/31/2023 10:55 am by zubenelgenubi »
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Offline vyoma

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Re: SSLV D3 - XPoSat - FLP - NET Q3 2023
« Reply #10 on: 05/30/2023 05:41 pm »
SSLV D3 would also carry this payload: Space borne GNSS-Reflectometry with NavIC

Offline vyoma

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Re: SSLV D3 - XPoSat - FLP - NET Q3 2023
« Reply #11 on: 05/30/2023 05:44 pm »
XPoSat User Meet stream (25 May 2023):


 

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