... About ATMoB . ... The ATMoB has established an email list server with various mailing lists for use by our members. ... This list has been established for use by ATMoB members, friends of members, and anyone interested in astronomy with a focus on things of interest to those in the greater Boston area. ... Notice: The owners of this server, the Amateur Telescope Makers of Boston, and any other sentient beings that happen to be involved assume no responsibility for any messages posted via this system...

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... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Maximize a minimum filter . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• filter | Astronomy.com
• How do light pollution filters work? Do they actually help? | Astronomy.com
• Using filters | Astronomy.com

. You can get a short description of each ftp command by typing help followed by the command you want to know more about and pressing the <RETURN> key. For example: ftp> help open open connect to remote tftp ftp> . If you find this description is too brief you will find a much fuller one for each command in the Unix Programmer's Manual pages for ftp .

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• Checking the description of a command
• Description of different types of shell
• DESCRIPTION

... О метеоритах . ... О лаборатории . ... Падение 12 февраля 1947 г. 10 ч. 38 мин. ... Е.Л. Кринов, 1981 г. Падение Сихотэ-Алинского метеорита 12 февраля 1947 г., 10 ч. 38 мин., г.Иман, Приморский край. ... Установить место падения метеорита пока не удалось.. Вечерняя Москва" 17 февраля 1947 г. Один из кратеров, образовавшихся при падении Сихотэ-Алинского метеорита. ... Схема дробления метеорного тела во время движения в земной атмосфере с космической скоростью (Кликни чтобы увеличить). ...

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• The Laboratory of Meteoritics, Vernadsky Institute, RAS

Laboratory work N7 Low-pass filtering. 1) Generate the signal with two periodic components and high-frequency noise. ... 2) Perform it's filtering with Panteleev filter 0 - h(t) = e 22 0 |t| 2 0 t 0 |t| cos + sin 2 2 , where 0 is a parameter. The frequency response of the Panteleev filter is ^ h( ) = 4 0 . 4 0 + 4 Select the cut-off frequency (by varying 0 ) for filtering out high-frequency periodic component and noise. 3) Plot the initial and filtered signal. ...

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• MSSA results
• Technical Details
• Description of Data

Courtesy of NASA's National Space Science Data Center . ... The Lunar Orbiter 4 spacecraft was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. ... This experiment consisted of a dual-lens camera system designed to satisfy the primary mission objective of providing photogaphic information for mapping and for the evaluation of Apollo and Surveyor landing sites. ...

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• Lunar Orbiter 1
• Lunar Orbiter 5
• IKI selection for Campaign # 2 at April- June 2000

... Instrument Description . Software: Version 4.0 . Version 3.0:Complete Documentation . ... ИОНОЗОНД ПАРУС, разработанный в ИЗМИРАН, предназначен для диагностики ионосферы и оперативного прогноза КВ связи. ... Общая структура ИОНОЗОНДА ПАРУС, Технические Характеристики , Конструктивные параметры на настоящий момент соответствуют модификации Комплекса: ВЕРСИЯ 3.0 . ... Там же находится полное описание Комплекса ИОНОЗОНД ПАРУС: ВЕРСИЯ 3.0 . ... 2004 IONOSONDE PARUS ...

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• Empirical Model of the Nighttime Winter Ionospheric Trough
• Welcome to Ionosonde Parus Home Page!

... Space flight . ... Simulators . ... Space camp . Space Hotel . ... The "ATLAS Aerospace" company invites all the volunteers to pass a course of space training in the simulators of the Yuri Gagarin Russian State Scientific-Research and Test Center of Cosmonaut Training. ... The staff of the Mission Control Center regularly participates in such training, thus enabling to improve its interaction with the crew. ... Copyright 2000-2016 ATLAS Aerospace . ...

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• ATLAS aerospace invites you to get training experience as cosmonaut and
• Wilderness survival training using cosmonaut survival kit for forced emergency
• Diving in space suit ORLAN M at neutral buoyancy laboratory at space center.

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

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• ELF-VLF ADVANCED SIGNAL ANALYZER AND SAMPLER SAS-2

... Trade name: Zinc selenide . ... Employers should use this information only as a supplement to other information gathered by them, and should make independent judgement of suitability of this information to ensure proper use and protect the health and safety of employees. This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user. ...

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• ZnTe Safety Data Sheet
• CdSe Safety Data Sheet
• ZnS Safety Data Sheet

... 8, ``Celestial Mechanics'', 2002 First results of GPS orbit determination with GRAPE package using a square--root information filter M. O. Keshin Institute of Applied Astronomy, St. Petersburg, Russia The zero--differenced carrier phase measurements contain the distance be­ tween the phase centres of receiver and transmitter antennas biased by unknown integer number of cycles (phase ambiguities). ... In the case of GPS the problem of solar radiation pressure modelling is of primary importance. ...

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• Keywords_96
• (Untitled)
• Keywords_99

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . The solar regions . NOAA 11300's . NOAA 11200's . NOAA 11100's . NOAA 11000's . NOAA 10900's . NOAA 10800's . NOAA 10700's . NOAA 10600's . NOAA 10500's . NOAA 10400's . NOAA 10300's . NOAA 10200's . NOAA 10100's . NOAA 10000's . NOAA 09900's . NOAA 09800's . NOAA 09700's . NOAA 09600's . NOAA 09500's . NOAA 09400's . NOAA 09300's .

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