The eye of the telescope of the National Observatory of Iran was illuminated by the light of the universe

Finally, after a long delay, the Iran National Observatory's telescope received its first light until the process of integrating its scientific instruments started.

BingMag.com The eye of the telescope of the National Observatory of Iran was illuminated by the light of the universe

Finally, after a long delay, the Iran National Observatory's telescope received its first light until the process of integrating its scientific instruments started.

The first exposure that was announced on 23 Mehr, is actually the beginning of a series of activities whose purpose is to know the optical, control and mechanical behavior of the telescope and measure its main features.

Among them, activities include determining the dimensions of the light spot in the focus of the telescope, checking controllability such as targeting and tracking of the telescope, as well as the performance of active optics. This process, by performing the final settings of the telescope and its software, is considered an important step towards the beginning of the scientific operation of the telescope.

As the first target of the telescope to capture light, the experts of the National Observatory identified the Arp 282 colliding galaxy pair, which is at a distance of 320 They chose to be located a million light years from Earth and in the constellation of Andromeda. Receiving the light of this extragalactic mass on the first night of technical observation shows the technical capabilities of the telescope.

The data recorded in the first exposure show that the telescope, at the beginning of the process, has a resolution of 0.8 arc seconds, which corresponds to the average astronomical visibility of the site. It provides an observation of the wolf at the main focus and in the field of view of 2 arc minutes. According to the researchers, the number is much better than the amount considered in the design process.

BingMag.com The eye of the telescope of the National Observatory of Iran was illuminated by the light of the universe

The image of the first illumination of the telescope of the National Observatory of Iran
Credit: INO/IPM

The active optics system of the telescope is also able to eliminate "Optical Aberration" ) or "optical error" by changing the shape of the main mirror and moving the secondary mirror.

The main telescope of the National Observatory of Iran is an optical telescope with a diameter of the main mirror of 340 cm and a weight of 4000 kg. This telescope also uses a 60 cm secondary mirror and is a combination of Cassegrain type optical instrument and side-elevation type mechanical structure that allows tracking objects with arcsecond accuracy.

This combination in the years The latter has been used for most medium to very large telescopes. In order to control the movement of the axes as well as the primary and secondary mirror, an attempt has been made to use the latest technology in the world, which brings the total weight of the telescope structure to about 90 tons. It is a side where the fixed part of the chamber is covered by sandwich panels with a combination of concrete and steel. This coating is also used for the steel structure of the revolving dome.> The diameter of the fixed part is about 15 meters and its height is 9.5 meters. Wheels, rollers, dust trap, dome moving mechanism as well as electric power transmission system are located at the interface between the fixed and moving parts of the enclosure. According to researchers, more than 120,000 mechanical and optical parts have been used to build this observatory.

In the northern hemisphere of the planet, various large observatories have been built in Spain to India, and now the Iranian observatory located in Gargesh Kashan peak is considered the eighth professional observatory in the northern hemisphere of the earth.

It should be said that the project of the national observatory of Iran is known as the first scientific macro project of the country in the field of basic sciences, which is managed by the Research Institute of Basic Sciences and With the support of the Ministry of Science, Research and Technology, the Vice President for Science and Technology and the Program and Budget Organization, efforts have been made to make it based on localized technology from its design to observation.

  • telescope for Iranians; A conversation with the manager of the development plan of the National Observatory

Cover photo: The building of the National Observatory of Iran and the Milky Way
Credit: Iran National Observatory

Sources: Science, ISNA

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