World's largest solar telescope planned near Ladakh's Pangong lake


World's largest solar telescope planned near Ladakh's Pangong lake
Sun spots as seen through a solar telescope. The planned telescope at Ladakh will have an aperture size of two metres and is expected to be completed by 2017. (TOI photo)
KOLKATA: India is expected to start building the world's largest solar telescope on the icy heights of Ladakh to study the sun's atmosphere and understand the formation of sun-spots and their decay process.

The Rs 300-crore project is expected to come up at either Hanle or Merak, which is very near to the Ladakh's Pangong lake along the Line of Actual Control (LAC) with China.

Currently, the world's largest solar telescope is the McMath-Pierce Solar Telescope with an aperture size of 1.6 metres in Kitt Peak National Observatory at Arizona in the US.

"Fabrication of the National Large Solar Telescope is expected to begin in late 2013," Siraj Hasan, principal investigator for the project, told reporters on the sidelines of the 100th Indian Science Congress here.

The telescope, with an aperture size of two meters, is planned to be completed by 2017 and will be the largest such facility in the world at least till 2020 when US is expected to commission its four-meter telescope at Hawaii.

The main objective of the facility would be to study the formation and decay of sun spots, their subsurface structure and why do they have a penumbra and how is it formed, Hasan said.

Most of the back-end instruments of the telescope would be made in-house and the instrument for night time observations would be developed in collaboration with Hamburg Observatory in Germany.

NLST is expected to be a unique research tool which is likely to attract several talented solar astronomers to the country and provide a superior platform for performing high quality solar research, Hasan said.

Bangalore-based Indian Institute of Astrophysics is the nodal agency for the project, which also has participation from Indian Space Research Organization, Aryabhatta Research Institute of Observational Sciences, Tata Institute of Fundamental Research, IUCAA, IISc and IISER.



only two countries, plus the European Space Agency, that have achieved Mars orbit (by launch year):
  1. United States 1964
  2. United States 1969
  3. Soviet Union 1973
  4. United States 1975
  5. United States 1996
  6. ESA 2003
  7. United States 2003
  8. United States 2005
  9. United States 2007
  10. United States 2011
And there are only two countries that have successfully landed on Mars (by landing year):
  1. Soviet Union 1971
  2. United States 1976
  3. United States 1997
  4. United States 2003
  5. United States 2008
  6. United States 2012
Japan launched a probe, but it failed to achieve orbit (it "missed the planet") and China had a joint venture with Russia that never left Earth's orbit. Wikipedia has a nice graphic [wikimedia.org] illustrating the history of Mars exploration.



Now, brain 'pacemaker' for Alzheimer patients


Now, brain 'pacemaker' for Alzheimer patients
Surgeons implant brain 'pacemaker' for Alzheimer's (Thinkstock photos/Getty Images)
In a pioneering feat, Johns Hopkins researchers surgically implanted a pacemaker into the brain of an early stage Alzheimer's patient.

The device, which provides deep brain stimulation, can potentially boost memory and reverse cognitive decline.

The implantation is part of a federally funded, multi-centre clinical research designed to slow or halt the ravages of the disease.

Instead of focusing on drug treatments, with reported failures in recent trials, the research relies on low-voltage electrical charges delivered directly to the brain, according to a John's Hopkins statement.

The first US patient in the new trial underwent surgery at The Johns Hopkins Hospital, and a second patient is scheduled for the same procedure in December.

The surgeries at Johns Hopkins are being performed by neurosurgeon William S. Anderson.

"Recent failures in Alzheimer's disease trials using drugs such as those designed to reduce the build up of beta amyloid plaques in the brain have sharpened the need for alternative strategies," said Paul B. Rosenberg, associate professor of psychiatry and behavioural sciences at the Johns Hopkins School of Medicine, and site director of these trial.

Some 40 patients are expected to receive the deep brain stimulation implant over the next year or so at Johns Hopkins and elsewhere as part of the Advanced Study led by Constantine G. Lyketsos, professor of psychiatry and behavioural sciences at the Johns Hopkins School of Medicine, and Andres Lozano, chairman of the neurology department at the University of Toronto.

Only patients whose cognitive impairment is mild enough that they can decide on their own to participate will be included in the trial.

By 2050, the number of people age 65 and older with Alzheimer's disease may triple, experts say, from 5.2 million to a projected 11 million to 16 million, unless effective treatments are found.