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PostPosted: 25 Apr 2012 13:21 
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^ Suddenly both ISRO and DRDO ( with Agni V launch ) are more open and forthcoming with information (Brochures, photos, launch processing videos etc.). Guessing...this may be a policy decision by GOI to project confidence and visibility in both domestic and international community.


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PostPosted: 25 Apr 2012 16:42 
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Yes. And in the article titled 'Reign of Fire" carried by the Week, DG DRDO said as much.


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PostPosted: 25 Apr 2012 19:22 
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D Roy wrote:
Yes. And in the article titled 'Reign of Fire" carried by the Week, DG DRDO said as much.


Is this a print version? Any chance of a web link :) ?


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PostPosted: 25 Apr 2012 20:18 
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just noticed
scheduled launch time: 05:47 IST
sunrise @ SHAR : 05:50 IST
Launch could be a visual treat!


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PostPosted: 25 Apr 2012 20:25 
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Hindu aritcle mentions RISAT-1 imagery resolution to be anywhere from 50 m to 3m. However in a special "spotlight" mode it can have a resolution of 1 m. This to me tells me that the SAR might have been imported from Israel


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PostPosted: 25 Apr 2012 20:44 
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Juvva,

this link gives the entire article
http://defenceforumindia.com/forum/stra ... -fire.html

But refer to the BR discussion on it
viewtopic.php?p=1203510


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PostPosted: 25 Apr 2012 20:51 
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Craig Alpert wrote:
Hindu aritcle mentions RISAT-1 imagery resolution to be anywhere from 50 m to 3m. However in a special "spotlight" mode it can have a resolution of 1 m. This to me tells me that the SAR might have been imported from Israel

I doubt it is from Israel. RISAT-1 was supposed to have been launched much earlier, as stated in this paper:
PratikDas wrote:
Synthetic Aperture Radar Payload OF Radar Imaging Satellite (RISAT) of ISRO
The satellite is planned to be launched in 2007 and is expected to fulfill the requirements of remote sensing with all weather and day night operation capability

I believe it has taken us this long to iron out the technical issues. If we wanted to buy it from Israel, it would've been available much earlier. We certainly wouldn't have had to wait for 3 years since the launch of RISAT-2. RISAT-2 was also for X band frequencies while RISAT-1 is for C band frequencies. C band TR modules would be easier to realise.


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PostPosted: 25 Apr 2012 21:18 
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top-10-facts-about-risat-1-indias-own-spy-satellite

http://www.ndtv.com/article/india/top-1 ... ite-202250

According to the article neither the launch vehicle or the satellite is insured.. I wonder why...? is it because no one will be willing to insure space faring craft...?


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PostPosted: 25 Apr 2012 22:45 
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New India Assurance insures foreign satellites launched from India or local ones on foreign launchers. Spaceco/Allianz is the reinsurer for NIA. ISRO does not insure local sats launched from India since NIA is owned by the GOI. The launch vehicles are never insured.


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PostPosted: 25 Apr 2012 23:08 
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Pallava Bagla of NDTV seems to have good access to ISRO/DRDO folks, but I am appalled by the factual errors he repeatedly makes in his reporting. For instance, in the 10 facts... article of his linked above, he refers to RISAT-1 as the heaviest satellite launched by India. Not true - it is the heaviest satellite to be launched by a PSLV launcher, also the heaviest satellite to be launched by an Indian launcher into polar orbit. But not the heaviest satellite launched by an Indian launcher - that honor goes to the GSLV and the satellite was the INSAT-4CR, weighing 2160 kgs.

Then he seems to imply that RISAT-2 and RISAT-1 are the only satellites that can be used for surveillance purposes ( a whole series of optical satellites can do the same, although not at night or under cloud conditions).

He has even got the weight of RISAT-1 incorrect. It is not 1528 kgs. A mere look at ISRO's brochure for this launch would show that the weight of the satellite is 1858kgs.

Sorry Vishnu, but you have a dork as your main science correspondent.


Last edited by Sridhar on 26 Apr 2012 06:22, edited 1 time in total.

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PostPosted: 26 Apr 2012 00:17 
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ECIL going to great heights to eye the sky.

India's eye into the sky to observe celestial objects like stars and pulsars will gain more clarity soon. A large telescope is being set up at Hanle, a small town on the high altitude Ladakh area.

The Rs 50-crore, 21-m, gamma ray telescope is in the final stages of fabrication at the Electronics Corporation of India Ltd (ECIL), Hyderabad. “It will be ready in a modular structure by August-September,” said Mr Y.S. Mayya, Chairman and Managing Director of ECIL.

The MACE (Major Atmospheric Cherenkov Experiment) telescope, when ready will be the largest at the highest altitude in the world. The remotely operated, solar back-up telescope will detect bursts of gamma rays from these heavenly objects. The information and visual imagery is useful to astrophysicists to understand the birth, origin and processes of the stars, pulsars and the universe.

The Bhabha Atomic Research Centre (BARC), Mumbai is setting up this unique facility. It will enable the study of high energy cosmic gamma ray sources in the unexplored range of 20 to 100 GeV and beyond. The telescope will supplement the worldwide efforts to open up this new window to the observable universe.

The telescope will be set up on the campus of Indian Astronomical Observatory (IAO) at Hanle. The Indian Institute of Astrophysics (IIA), Bangalore is already operating the Himalayan Chandra Optical telescope (close to the proposed MACE site). A seven-element wavefront sampling gamma-ray telescope HAGAR (High Altitude Gamma Ray Telescope) has also been set up there jointly by IIA & TIFR.

The ECIL has already fabricated the structure, which will contain 356 square mirror panels of one-metre size and also a camera, weighing more than 1.25 tonnes made by the BARC scientists, Mr Mayya told Business Line today.

It is proposed to operate the MACE and HAGAR telescopes in a coordinated manner to improve their sensitivity. The close proximity of the telescopes will help in coordinated multi-wavelength studies of the cosmos.


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PostPosted: 26 Apr 2012 01:48 
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It can spy and also do a hundred humdrum things


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PostPosted: 26 Apr 2012 05:39 
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One minute to launch :)

Watch live at http://webcast.gov.in/live/


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PostPosted: 26 Apr 2012 05:42 
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Ground lit strap-ons separated. :)


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PostPosted: 26 Apr 2012 05:43 
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Heat shield separated! Altitude - 115 km +, Time - 3 + minutes


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PostPosted: 26 Apr 2012 05:46 
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PS-2 separated, second stage cut-off! Time - 5+ mins, Altitude - 300 + min


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PostPosted: 26 Apr 2012 05:49 
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PS-3 separated - third stage cut-off! Time - 512 secs, Altitude - 458 + min

PS-4 ignited - last stage of PSLV C19, this should go for another 10 mins.


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PostPosted: 26 Apr 2012 05:52 
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Text Book Launch going on.....


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PostPosted: 26 Apr 2012 05:58 
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RISAT-1 separated and put in the orbit! YAY!!!

Time - 18 min.

What a delight it was to watch a truly smooth lauch! :)


Last edited by Roperia on 26 Apr 2012 05:59, edited 1 time in total.

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PostPosted: 26 Apr 2012 05:59 
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Launch Successful, Congratulations :)


Last edited by Arav on 26 Apr 2012 06:15, edited 1 time in total.

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PostPosted: 26 Apr 2012 06:11 
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They (DD) cut off THE lady who made the tech in this sat possible? For some bad a*** Hindi program?


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PostPosted: 26 Apr 2012 06:14 
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NRao wrote:
They (DD) cut off THE lady who made the tech in this sat possible? For some bad a*** Hindi program?


Its a hearing impaired program sir and why this Kolaveri over Hindi? 8)


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PostPosted: 26 Apr 2012 06:14 
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Congratulations to ISRO. Success is now a habit.

We should soon know the launch altitude and crucially the inclination.

The DD news anchor congratulated ISRO for the "successful launch of India's first indigenous satellite". DDM quality is poor. The script writers need to get their act together.

This month had seen launch of Agni V and RISAT-1. Hopefully, it will be a triple with the NLCA maiden flight. A bumper month.


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PostPosted: 26 Apr 2012 06:20 
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rahulm wrote:
We should soon know the launch altitude and crucially the inclination.


If I recall correctly, both apogee and perigee were 400-something km (sorry I don't recall the exact values).

I heard them say that Inclination was 97°.


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PostPosted: 26 Apr 2012 06:23 
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Congrats, ISRO. PSLV has been so reliable that I have stopped feeling the nervous anticipation felt before most launches.


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PostPosted: 26 Apr 2012 06:40 
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For reference the injection targets were:

altitude 480 (+/- 40.5) Km
Inclination 97.552 (+/- 0.2).

Note the inclination variation range target is very low. Shows high confidence in guidance control. Benefits of Chandrayaan I possibly.


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PostPosted: 26 Apr 2012 06:47 
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Congratulations, ISRO!


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PostPosted: 26 Apr 2012 06:59 
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in case you missed the action

launch video of the PSLV-C19 mission

http://t.co/8PE39Uzk

Scientists addressing the public after the mission

http://t.co/Rczo0JZP


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PostPosted: 26 Apr 2012 07:46 
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congratulations ISRO. Good to see yet another successful PSLV launch. I hope this year 2012 will mark the first successful launch of GSLV with indigenous cryogenic engine.


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PostPosted: 26 Apr 2012 07:47 
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Congrats Isro.
1064 Seconds, velocity of 7.6 km/sec and range was 5094 Kms.


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PostPosted: 26 Apr 2012 07:57 
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India's RISAT-1 Satellite - utility & capability

http://www.youtube.com/watch?v=Oe5_3cfnaWw


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PostPosted: 26 Apr 2012 08:28 
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Indian rocket successfully launches Risat-1 satellite
Quote:
SRIHARIKOTA : On an early Thursday morning, an Indian rocket successfully launched into orbit a microwave Radar Imaging Satellite (Risat-1) from the spaceport here in Andhra Pradesh, around 80 km from Chennai.

The indigenous Risat-1, with a life span of five years, would be used for disaster prediction and agriculture forestry and the high resolution pictures and microwave imaging could also be used for defence purposes as it can look through the clouds and fog.

At exactly 5.47 a.m., the rocket - Polar Satellite Launch Vehicle C19 (PSLV-C19) - standing 44.5 metres tall and weighing 321 tons and with a one-way ticket, hurtled towards the skies ferrying the 1,858 kg Risat-1 after unshackling itself from launch pad No.1.

With a rich orange flame at its tail and a plume of white smoke, the rocket ascended towards the blue sky amidst the resounding cheers of Isro scientists and media team assembled at the launch centre.

People perched atop nearby buildings too happily clapped as PSLV-C19 went up.

Space scientists at the new rocket mission control room of the Indian Space Research Organisation (Isro) were glued to their computer screens watching the rocket escaping the earth's gravitational pull.

The Isro-made Risat-1 is the heaviest luggage so far ferried by a PSLV since 1993.

At around 17 minutes into the flight, PSLV-C19 delivered Risat-1 into a polar circular orbit at an altitude of 480 km and an orbital inclination of 97.552 degrees.

Isro, with its network of ground stations, monitored its health.

"PSLV-C19 mission is a grand success. This is the 20th successive successful flight of PSLV. India's (indigenously built) first radar imaging satellite was injected precisely into orbit," Isro chairman K. Radhakrishnan said after the launch.

For Isro, this is the first launch this fiscal as well as in the calendar year.

Remote sensing satellites send back pictures and other data for use. India has the largest constellation of remote sensing satellites in the world providing imagery in a variety of spatial resolutions, from more than a metre ranging up to 500 metres, and is a major player in vending such data in the global market.

With 11 remote sensing/earth observation satellites orbiting in the space, India is a world leader in the remote sensing data market. The 11 satellites are TES, Resourcesat-1, Cartosat-1, 2, 2A and 2B, IMS-1, Risat-2, Oceansat-2, Resourcesat-2 and Megha-Tropiques.

Risat-1's synthetic aperture radar (SAR) can acquire data in C-band and would orbit the earth 14 times a day.

In 2009, Isro had launched 300 kg Risat-2 with an Israeli built SAR enabling earth observation in all weather, day and night conditions.


With Thursday's launch the PSLV rocket has launched successfully 53 satellites out of 54 it carried - majorly remote sensing/earth observation satellites both Indian and foreign - and has been a major revenue earner for Isro.

The one failure happened in 1993 when the satellite was not able reach the orbit.

The rocket that delivered Risat-1 in the space is Isro's four stage PSLV's upgraded variant called PSLV-XL.

The letters XL stand for extra large as the six strap-on motors hugging the rocket at the bottom can carry 12 tonnes of solid fuel as against the base version that has a fuel capacity of nine tonnes.

The PSLV's four stages are fuelled with solid and liquid propellants. The first and third stages are fuelled by solid fuel while the second and fourth stages are powered by liquid fuel.

Isro had used the PSLV-XL variant for its Chandrayaan-1 moon mission in 2008 and for launching the GSAT-12 communications satellite in 2011.


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PostPosted: 26 Apr 2012 08:29 
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Congratulations to the whole scientific community of Bharatha... We are proud of you.


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PostPosted: 26 Apr 2012 08:46 
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Go Baby,Go! Gratters all round to the ISRO and the PSLV team.20 successful launches is something to be immensely proud of! We now need to build a large number of PSLVs ready at short notice to launch military sats esp. during a crisis.There should be no hesitation or lethargy by the GOI in establishing a network of mil-sats launched by the PSLV launchers.The three branches of the servcies ned their own dedicated sats,esp. the In,which is ever increasing its sphere of naval ops beyond the IOR confines and our intel services/NTRO who need their own intel sats just as the NSA does.Loads of work to be done,but this success is great going.


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PostPosted: 26 Apr 2012 09:01 
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Congrats ISRO. Splendid work, job well done.


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PostPosted: 26 Apr 2012 09:02 
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Excellent News to begin the day with , Congratulations ISRO and its entire staff for making this happen.


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PostPosted: 26 Apr 2012 09:05 
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Isro seeks Balaji's blessing for launch

Quote:
Ahead of the blast-off of the PSLV-C19 satellite launcher, scheduled for Thursday, Indian Space Research Organisation (Isro) scientists visited the Lord Venkateswara temple at Tirumala on Wednesday and sought the benediction of deity Balaji for the satellite’s flight into the outer space.

Isro Chairman K Radhakrishnan, who led the team to Tirumala, carried a model of the PSLV-C19 and placed it at the feet of the deity in the sanctum sanctorum. “I came to pray for its successful flight,” Radhakrishnan told reporters later. Special rituals were performed by a team of temple priests led by chief priest Ramana Dikshitulu.

Temple authorities said the ritual by Isro officials was not unusual as it had become a practice for public and private R&D institutions to seek the blessings on the eve of any test launch.

Indian scientists have been known to conduct religious rituals before any significant event, but Radhakrishnan, who has been in the eye of a storm over the recent controversy over Isro’s deal with a private entity, has been criticised in the past for exhibiting his religious beliefs openly. Anticipating his elevation as Isro chairman in October 2009, Radhakrishnan, a trained Kathakali dancer, camped at the Krishna temple at Guruvayoor temple, received his appointment order via the temple fax and had himself weighed in bananas in a thanksgiving ceremony called Tulabharam.

Guess Lord Balaji listened to ISRO's prayers and blessed us all!! :D

One can safely ignore the psy-ops about evil Hindu traditions being done openly.


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PostPosted: 26 Apr 2012 09:28 
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Idiots at NDTV reporting the launch of "India's first remote sensing satellite". :x


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PostPosted: 26 Apr 2012 09:34 
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YAWN........ for yet another successful Rakit launch ISRO. :P :twisted:


Lungi dance for the first Indian SPY sat.

1st in a long line of spy sats.


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PostPosted: 26 Apr 2012 09:40 
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nachiket wrote:
Idiots at NDTV reporting the launch of "India's first remote sensing satellite". :x


+1. They have now changed it in some places. However NDTV needs to fire a bunch of their TV anchors, no grace and no knowledge, even to ask the right questions.

Particularly in this video, the anchorwoman keeps on stressing about securing the borders to the spokesperson who wants to talk only about paddy and kharif season. Take a hint, why is ISRO talking only about paddy and kharif season and why not ask questions about mango and other agricultural produce. And talk about night vision etc and then ask who your customers are going to be.

ISRO is *not*., repeat *not* in the spying business, but its satellite can provide data which suitable user organizations can use it for their benefits and that may include "spying".

See the video at http://www.ndtv.com/article/india/isro-successfully-launches-spy-satellite-risat-1-202464

Added later: ISRO really needs to have high speed cameras and then use that to create a video for IMAX theaters., and should be shown free of charge - including ways to join ISRO. This should inspire next gen of rocketeers. And BTW, they should show the blessings by Lord Venkatasha at Tirumala as well :-)


Last edited by disha on 26 Apr 2012 09:42, edited 1 time in total.

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