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ЦитатаPSLV Lifts Off With India's First Astronomical Satellite By Vasudevan Mukunth on 28/09/2015 At 10 am this (Monday) morning, a PSLV-XL rocket lifted off with India's first space-borne astronomical observatory fr om ISRO's Satish Dhawan Space Centre at Sriharikota. The observatory, titled ASTROSAT, is set to be placed in a low-Earth orbit at an altitude of 650.17 km by the rocket after its fourth-stage ignition is cut off 21 minutes and 56 seconds after launch. When that happens, India will become the first developing nation to have launched an astronomical satellite.The launch - the 30th successful one in a row for the PSLV - will also place one Canadian and one Indonesian satellite in orbit, as well as four American nano-satellites, a first. The time of launch coincides with Prime Minister Narendra Modi's visit to Silicon Valley and on the same day as a planned visit to President Barack Obama. As The Guardian noted, India's Mars Orbiter Mission entered orbit around Mars just days before Modi's visit to the US in September 2014.The five instruments and one passive monitor on board ASTROSAT will all have switched on by December 13, 2015, 45 days from when ASTROSAT enters orbit. The switch-on sequence goes like: [/li]Charged Particle Monitor - September 29Scanning Sky Monitor - October 6Cadmium-Zinc-Telluride Imager - October 6Large Area X-ray Proportional Counter - October 20Ultraviolet Imaging Telescope - December 10Soft X-ray Telescope - December 13By late September 2016, ISRO has said it will start allowing third parties to buy observation time on the instruments, although that will be available to international applicants only by the third year of operations. The proposals will be processed via the ASTROSAT Proposal Processing System on the Indian Space Science Data Centre website.ASTROSAT has been built to last five years so ISRO is not planning for costly maintenance runs in the future. Its instruments will study sources of high-energy UV and X-radiation in the cosmos, typically objects like supernovae, neutron stars and black holes, with a noted ability to make observations on both wavelengths simultaneously. In general, they will be sensitive to particulate radiation with energies ranging from 0.1 keV to 100 keV. Regimes wh ere the X-ray instruments on board ASTROSAT are effective. Source: IUCAA
ЦитатаAstroSat Support Cell (ASC) has been Set up at IUCAA, PuneThe AstroSat Mission, launched on September 28, 2015, has completed its performance verification and started Science Operations since April 15, 2016. A phase of guaranteed time observations for the instrument teams is currently ongoing. From October 2016 onwards, observatory access will be open to Guest Observers from the Indian science community. Observing time will be awarded on the basis of peer-reviewed proposals. ISRO, in collaboration with the Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune has set up an AstroSat Support Cell (ASC) to facilitate the proposal making process and the use of AstroSat data. The Cell will operate out of IUCAA and will provide resource material, tools, training and help to guest observers. A website has been set up (http://astrosat-ssc.iucaa.in) containing a portal to the AstroSat Proposal Processing System (APPS), Exposure Time and Visibility calculators. The site also provides downloadable proposal assistance tools, instrument response functions, sample data of AstroSat instruments and analysis software. Activities of the AstroSat Support Cell will include providing long-term support and maintenance of the APPS, running a help desk for proposal and data related queries, and organising workshops to familiarize users with proposal preparation and data analysis techniques. It is planned to hold every year two long duration workshops at IUCAA and several short duration workshops at different parts of the country.A Memorandum of Understanding between ISRO and IUCAA for the operation of the AstroSat Support Cell has been signed on May 05, 2016.