partha wrote:Yeah, it can't be 7.3 km since perigee itself is 365 km. It's a pretty good pic for 7300 km.
Periapsis or periareion-not perigee Nice to be able to correct the inadvertant error
Raja Bose wrote:csaurabh wrote:There are multiple reasons why IITians don't join ISRO and why ISRO doesn't recruit IITians. I know this because I have seen this closely and from both sides of the story.
Why is that? Post your reply in Nukkad if you wish to.
SaiK wrote:some cool pics here [not our mom's ]
http://news.discovery.com/space/indias- ... 140924.htm
how could this have possibly happened?
sudhan wrote:I see no discussion about the imminent arrival of comet Siding Spring and its potential impact on MOM... Any nuggets on this?
No sooner the news about the successful entry of the satellite, students, and science teachers of Jegan Matha Matriculation Higher Secondary School in K.K. Nagar ( at Tiruchirapalli, TN ) in the city congratulated the Indian Space Research Organisation.
Standing around a Rangoli painting depicting the satellite entering the Mars planet, students of classes 6, 7, and 9 expressed their joy and pleasure on the occasion.
“We have been closely following-up the progress of the satellite right from its launch a year ago,” says E. Krithika, a science teacher who has been guiding the students on the significance of the space science in general and the Mangalyaan in particular.
Raja Bose wrote:sooraj wrote:India reaches the Red Planet! So why is Britain giving £1BILLION in aid to a nation that can afford a mission to Mars?
Somebody even claimed Mangalyaan was funded with Br1sh1t tax dollars.
vinod wrote:I actually feel, we got one up over europeans as well, since we got it right first time!!
It is a stunning achievement for the Indian Space Research Organisation, or Isro, to have got the Mars Orbiter Mission, or MOM, successfully into orbit at its first attempt. In the process, the space agency performed a sequence of formidably difficult tasks. First, it calculated and executed a complex slingshot trajectory where the craft swung around the Earth several times in order to generate speed by using the planetary gravity field. Then, Isro had to wake up long-dormant systems and engines, and program a delicate series of remote manoeuvre to be performed autonomously while the craft operated off battery power on the dark side of Mars. Given a radio lag of 12 minutes, the apparently seamless command of telemetry it is now displaying is, in itself, remarkable.
However, too much is being made of the mission being performed on a shoestring. First, accounting standards are not the same across agencies such as Isro and, say, the United States' National Aeronautics and Space Administration. If the same standards were applied, the Mars orbiter would have cost much more than the stated Rs 450 crore, since the salaries of dedicated personnel, and other such costs, would have been attributed to the mission. However, it is undoubtedly true that the MOM did cost less than any previous mission to Mars. Also, to some extent, Isro learnt from the failures of prior Mars missions by other agencies. It knew some of the mistakes it had to avoid and that helped in getting things right at first go.
But the "cheapness" was forced upon Isro because of earlier failures. The smaller, older Polar Satellite Launch Vehicle (PSLV) had to be deployed, rather than the more powerful Geosynchronous Satellite Launch Vehicle (GSLV), because Isro had failed to stabilise the GSLV's cryogenic technology in time to launch into a favourable Earth-Mars window. The payload for the Mars orbiter had to be considerably reduced as a result. The trajectory also became more complicated because the PSLV lacks the power to take a more direct route. A GSLV-based Mars mission would have cost more. But it could have carried a much bigger payload, and it could have reached Mars faster. This is significant, given Isro's desire to break into the big league in terms of satellite launches. The commercial market is interested in big satellites with larger payloads. The GSLV can put 2,500-kg satellites into the geosynchronous orbit. The commercial market is often interested in above 3,000-kg ones. So Isro needs to scale up these capabilities. Selling the mission as "cheap" only draws attention to the things that Isro has not yet done.
Remember, also, the next stage of the mission has just begun. More than just the results of five scientific experiments, the robustness of equipment design and the data-gathering will be crucial; experience will drive planning for the second Isro lunar mission, Chandrayaan II. The pay-offs in the commercial satellite market will be big, with the proviso that Isro must scale up. But above all, this mission provides inspiration. It raises the profile of space technologies, and it raises India's profile in those domains. More bright young Indians will now be interested in that area. That pay-off is long-term, and it cannot be easily quantified. But it is huge.
It (the dark spot) was discovered, on the basis of data from Mars Global Surveyor, to be a low-relief shield volcano, but was formerly believed to be a plain, and was then known as Syrtis Major Planitia. The dark color comes from the basaltic volcanic rock of the region and the relative lack of dust
abhischekcc wrote:Asteroid strike at low angle.
But the "cheapness" was forced upon Isro because of earlier failures. The smaller, older Polar Satellite Launch Vehicle (PSLV) had to be deployed, rather than the more powerful Geosynchronous Satellite Launch Vehicle (GSLV), because Isro had failed to stabilise the GSLV's cryogenic technology in time to launch into a favourable Earth-Mars window. The payload for the Mars orbiter had to be considerably reduced as a result. The trajectory also became more complicated because the PSLV lacks the power to take a more direct route. A GSLV-based Mars mission would have cost more. But it could have carried a much bigger payload, and it could have reached Mars faster
In proving it can pull off a complex space mission, India becomes one of the world's few reliable ferrymen to the stars. That can attract investors, commercial launch orders and customers to hire Indian rockets and satellites for their scientific research.
India's credibility also gets a huge boost, he said. "These kinds of successes put India in a better bargaining position, reassuring investors that we can perform."
The country's business sector applauded the mission, with the Federation of Indian Chambers of Commerce and Industry saying "it will encourage Indian industry to invest in the research and innovation."
India's success shows the world that "they are now a force of capability ... that can be taken very seriously," said space expert Roger Franzen, the technical program manager at the Australian National University's Research School of Astronomy and Astrophysics.
"India has an extremely well-developed space industry that manufactures everything from the components to the spacecraft to the instrumentation to the launch vessels," he said.
In the realm of scientific space research, India also could soon join in collaborative missions with NASA or ESA, he suggested.
abhischekcc wrote:SaiK wrote:some cool pics here [not our mom's ]
http://news.discovery.com/space/indias- ... 140924.htm
how could this have possibly happened?
Asteroid strike at low angle.
SaiK wrote:is that your deduction?
"The women were leading the applause when the good news arrived. They were celebrating more than men. Who said men are from Mars and women are from Venus?" says senior science journalist Pallava Bagla, who was present in the control room.
The picture - which brightened up my manic morning writing up the Mars mission story - went viral and became the event's image of the day.
People in their thousands tweeted that they loved it. One said "when was the last time you saw women scientists celebrate a space mission?"; another that the women showed "we don't need to wear labcoats". Others said the scientists in saris had "redefined mission control" and called them "true role models".
The chatter even veered into the contentious Indian debate about tradition and modernity.
Look at our rocket scientists, said one tweet, when women working in call centres think that wearing jeans "makes them modern and scientific". Somebody wondered why "no matter how much women succeed/achieve, the focus ultimately is on what they are wearing?" That, another respondent tweeted, is "because we have newspapers telling us that smart career women don't wear saris only western business suits!".
Although we do not know for sure whether all the women in this picture are engineers or scientists, they all probably work with India's space agency. Some 20% of Isro's 14,246 employees are women and their numbers are growing.
Nandini Harinath, 44, a physicist and a mother of two, was the deputy operations director of the Mars mission - in other words, she was the person "operating" the spacecraft between Earth and Mars. "It's easier to bring up children than to control the Mars orbiter," she told the NDTV news channel. Minal Sampath and her team built three instruments for the spacecraft and she wants to become "the first woman director of a space centre".
SaiK wrote:if the target of the photo is known, then we can draw a better picture (precise) of the orbit.
Dilbu wrote:They released a photo from 7300KM away for the sake of releasing something is what I feel. I hope all izz well with the high resolution images we are supposed to be getting. This delay is making me nervous.
Amber G. wrote:Wow --- a quick google search revels that no main stream media is reporting the fact that picture is Syrtis Major ...Do those editors don't know even the basic features on Mars unless pointed out by some non-experts like us?
La photo semble un peu floue. Elle n'est pas non plus très résolue. Mais elle est historique. Car elle a été prise ce 25 septembre 2014 par la sonde indienne Mars Orbiter Mission (MOM), aussi appelée Mangalyaan. L'Inde devient ainsi, après les Etats-Unis, la Russie et l'Europe, la troisième puissance spatiale à satelliser un engin autour de la planète rouge. Un bel exploit technique.
L'image, qui la surface martienne sur environ 850 km de côté, montre une partie de la région Syrtis Major. Le cratère doté d'un pic central qui est visible presque au centre de la photo se nomme Fournier. Il mesure environ 120 km de diamètre. Les stries blanches visibles sur les terrains sombres sont des structures dues aux vents dominants qui soufflent depuis le bassin d'Isidis, situé plus au nord, hors du champ, vers le bas de l'image.
Philippe Henarejos, le 25 septembre 2014.
La région martienne de Syrtis Major, par la sonde indienne MOM.
SaiK wrote:let us analyze this:
http://upload.wikimedia.org/wikipedia/c ... _MC-13.jpg
ps: at first look this pic does not provide similar patterns.. may be we need some other pic to compare
The summit of Syrtis Major, despite its low altitude, is one of the less dust-covered places on Mars overall. Winds from the northeast have swept across the volcano, leaving streaks to mark their direction. Downwind from many craters lie bright tails of dust which accumulated in the craters' wind-shadow.
Wind-shadows form when the upthrust crater rim causes the airflow to become turbulent. The result is a slackening of wind in the zone directly behind the crater. Any airborne dust that drifts into the shadow zone has a good chance of settling out of suspension onto the ground.
Away from the shadow zones, winds can drive larger particles (sand, for example) to bounce across the ground. When sand particles land, they typically knock the smaller dust particles loose from the surface and they are carried off by the wind.
But the bouncing sand grains don't fly downwind forever: If the wind slackens, they'll pile up, depositing the raw materials for making dunes, just as happens in desert regions on Earth.
Since, you knew the precise orbit, you knew it was syrtis major]