In summer 1977, ESA placed the first technological study contract in the domain of intersatellite optical links. Now, twenty years later, a major milestone has been reached with the SILEX laser terminals having been flight tested for integration with their host spacecraft. At the same time, ESA is preparing itself for a new challenge: the potential massive use of optical cross links in satellite constellations for mobile communications and global multimedia services. This is an opportune moment to look back at the past twenty years of ESA effor ....etc

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Abstract
Adaptive optics is a new technology which is being used now a days in ground based telescopes to remove atmospheric tremor and thus provide a clearer and brighter view of stars seen through ground based telescopes. Without using this system, the images obtained through telescopes on earth are seen to be blurred, which is caused by the turbulent mixing of air at different temperatures.
Adaptive optics in effect removes this atmospheric tremor. It brings together the latest in computers, material scie ....etc

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physics investigatry projct class12 on telescope ....etc

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Sir need a investigatory project on the study of telescope 
Please help me 
It's urgent ....etc

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Introduction
With the improvements in semiconductors optical free space communication has become n attractive alternative to existing signal conducts as fibre or wireless (RF). It offers high data rates and is much less expensive than underground fibre. But there are a few restrictions, which may mean it remains an alternative. Many engineers are familiar with one of two successful existing technologies for data communication: (1) Guided wave (e.g. fibre optics) and (2) wireless free space communication (e.g. RF). Fibre optics offers extremely ....etc

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pls. mail me the ppt on
adaptive optics .
my email id [email protected] ....etc

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ABSTRACT In the astronomy world, there is a need for high-performance radio telescopes operating at low frequencies. Such a telescope can be realized by a large network of small dipole antennas spread over an area of about 360 square kilometers. This antenna configuration requires a multi-terabit optical network to transport and collect the massive amounts of data picked-up from the sky. Within the Retina project, we have developed an architecture for such a multi-terabit optical network. In addition, new 160 Gbit/s line rate technology has be ....etc

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http://freespaceopticsfreespaceoptics/images/flightstrata_photo.jpg
Free space optical communications is a line-of-sight (LOS) technology that transmits a modulated beam of visible or infrared light through the atmosphere for broadband communications. In a manner similar to fiber optical communications, free space optics uses a light emitting diode (LED) or laser (light amplification by stimulated emission of radiation) point source for data transmission. However, in free space optics, an energy beam is collimated and transmitted t ....etc

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I wanted the detailed report,ppt on adaptive optics in ground based telescope. ....etc

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Abstract:

This Project is designed to track the various positions of the sun using telescope (with the help of LDRs). The LDR senses the intensity of sunlight and sends the output to the microcontroller through ADC. The microcontroller compares the various intensities and directs the telescope to point towards the direction of sunlight having maximum intensity. The rotation of the telescope is controlled by motors .The value of the intensity of different LDRs is displayed on the LCD ....etc

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