TELESCOPES

GAZING THE INFINITY

REFRACTING TELESCOPE

REFLECTING TELESCOPE

2.5m Mt. WILSON

MIRROR

MOUNT PALOMER OBSERVATORY

CALIFORNIA

Housing 5 telescopes

WILSON 60’’

1908

WILSON 100’’1917

HALE 200”/ 5m1949

SPIC AND SPAN

Washing the mirror

Three million light years away…..

2008

SUPER NOVAE

Mt. PALOMER OBSERVATORY

SALT- SAUTH AFRICAN LARGE TELESCOPE

THE PRIDE OF AFRICA

HUBBLE

THE FIRST SPACE TELESCOPE

SPITZER

INFRA RED SPACE TELESCOPE

CHANDRA

AN X RAY TELESCOPE IN SPACE

VERY LARGE ARRAY RADIO

TELESCOPE, NEW MEXICO

Keck observatory, Mauna kea, Hawaii

- Two 10m telescopes

Keck at night

VLT

Four 8m telescopes - Cerro Paranal, Atacama, Chile

Calibration

Making artificial stars by exciting Na atoms

with laser beams

Interior of Antu, the Sun

The Long Haul

Resolution – one milli arc second

Completed in 2006, it is 4 billion times powerful than unaided eyes

ATA (Allen Telescope Array) – An ambitious

project

• When completed, it will have 350 antennae

• Project supported by Paul Allen, co founder, Microsoft corporation

Allen Telescope Array(One Hectare Telescope)

San Francisco, California

Andromeda - in visible light and the radio image

M33 Pinwheel Galaxy

SETI – Search for Extra Terrestrial Intelligence

METI – Messaging to Extra Terrestrial Intelligence

• Physicist Stephen Hawking, suggests that "alerting" extraterrestrial intelligences of our existence is foolhardy

• They may be looking for resources• "It is not obvious that all

extraterrestrial civilizations will be benign” - Nature \

• Better we "lay low".

E ELTEuropean Extremely

Large Telescope

A 42m telescope coming up in Cerro Armazones, Chile

OWL – Overwhelmingly Large Telescope

A 100m Telescope, 1500 times powerful than Hubble

VERITAS – Very Energetic Radiation Imaging Telescope

Array System

gamma ray telescopes

Fermi’s Large Area Telescope

Detected by Fermi’s Large Area Telescope

Vela Pulsar

Pulsar Map by Fermi Telescope

ARECIBO RADIO TELESCOPE (300m)

Largest single dish telescope

Puerto Rico

ToMr. Alien,M 1325,000 l.y

Numbers 1 -10

Atomic No: H, C, N, O, P (DNA)

Formulas for sugars and basesin DNA

The double helix structure of DNA

Human figure, height and the world population

The Solar system

Arecibo dish and its dimension

Quasar (Quasi Stellar Radio Source) – view by Hubble

Quasar- 10 billion light years awayView by Chandra

Quasar starburst in infra red

Antennae galaxies star

burst

NGC 1569 starburst