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Airborne Telescope
An airborne observatory is an airplane, airship, or research balloon, balloon with an astronomical telescope. By carrying the telescope to a sufficiently high altitude, the telescope can avoid cloud cover, pollution, and carry out Observational astronomy, observations in the infrared spectrum, above water vapor in the atmosphere which water absorption, absorbs infrared radiation. Some drawbacks to this approach are the instability of the lifting platform, the weight restrictions on the instrument, the need to safely recover the gear afterward, and the cost compared to a comparable ground-based observatory. History Balloon-borne telescopes have been used for observation from the stratosphere since the Stratoscope, Stratoscope I was launched in 1957. A number of different instruments have since been carried aloft by balloons for observation in the infrared, microwave, X-ray and gamma ray bands. The BOOMERanG experiment, flown between 1997–2003, and the Millimeter Anisotropy eXper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SOFIA ED10-0182-01 Full
Sofia ( ; bg, София, Sofiya, ) is the Capital city, capital and List of cities and towns in Bulgaria, largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain in the western parts of the country. The city is built west of the Iskar (river), Iskar river, and has many mineral springs, such as the Sofia Central Mineral Baths. It has a humid continental climate. Being in the centre of the Balkans, it is midway between the Black Sea and the Adriatic Sea, and closest to the Aegean Sea. Known as Serdica in Late antiquity, Antiquity and Sredets in the Middle Ages, Sofia has been an area of List of oldest continuously inhabited cities, human habitation since at least 7000 BC. The recorded history of the city begins with the attestation of the conquest of Serdica by the Roman Republic in 29 BC from the Celtic settlement of Southeast Europe, Celtic tribe Serdi. During the decline of the Roman Empire, the city was raided by Huns, Visigoths, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
