... Точность изготовления поверхности зеркала, т.е. максимально допустимые отклонения от заданной формы, зависит от длины волны света, на которой будет работать зеркало. ... К примеру, зеркало, работающее в видимом свете (длина волны = 0,5 микрона), должно быть изготовлено с точностью 0,06 мкм (0,00006 мм). ... В простейшем случае окуляр может состоять только из одной положительной линзы (в этом случае мы получим сильно искаженное хроматической аберрацией изображение). ... на astronom-ntl.narod.ru . ...

Lisnyky observatory of A&SPD is located in the village of Lisnyky in Kyiv region. AZT-8 (right) Diameter 0.7 m, Newton, Cassegren. ... Spiral jets of comet Hale-Bopp have been observing on the 3-rd of April, 1997 with 70-cm reflector and image intensifier, time of exposure: 1 second, field of vision: 1.5 minute of arc. This color image was obtained with Fuji color film (Super Plus 400) in focal plane of the 70-cm reflector (F = 27 m) at Lisniki Observatory by A.M.Evtushevsky. ...

Rfmonitor data :090101 .5*( maxAllowable exposure ) 0.0 -0.5 -1.0 -1.5 5 10 15 Hour of day Ast 20 Rfmonitor data :090201 .5*( maxAllowable exposure ) 0.40 0.35 0.30 0.25 0.20 0.15 5 10 15 Hour of day Ast 20 Rfmonitor data :090301 .5*( maxAllowable exposure ) 0.30 0.25 0.20 0.15 0.10 5 10 15 Hour of day Ast 20 Rfmonitor data :090501 .5*( ...

Next: Contents . Cover Illustration: The background image used on the cover is taken from a photograph by Bob Fosbury showing the bay in Sardinia close to where the conference took place. It is reproduced at far lower resolution than the original. The upper insert is one of the ESO VLT firstlight images and is a true colour view of the core of the globular cluster Messier 4. ... More details of the VLT first light are given in the VLT First Light paper. ... Next: Contents Norbert Pirzkal . ...

... Meade Instruments Corporation . ... Meade Pictor XT-Series CCD Autoguider/Imagers . ... Take new sets of calibration frames if the temperature changes significantly.(or change the set you are using or the scaling if you are reusing calibration frames). ... You can also use scaleable dark frames called thermal frames. ... However, if you wish to reuse dark frames with images of different exposure times, you must turn the dark frame into a thermal frame by subtracting the bias information. ...

... Home Gallery Astrophotography Comets . ... Lecture Series 2014-2015 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... This MonthтАЩs Sky тАУ April 2015 . This MonthтАЩs Sky тАУ May 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... These images were provided to Winer Observatory by Mike Shade of Sonoita Hills Observatory as an example of the outstanding work done by local Sonoita amateur astronomers. ... All images on this page were taken with a 6-inch Astro-Physics aprochromatic refractor at Sonoita Hills Observatory using an SBIG ST-7 camera. ... Object: Galaxy Messier 100 . ... Date: March 2001 . ... All images on this page were taken with an f/5 Newtonian reflector at Sonoita Hills Observatory using an SBIG ST-7 camera. ...

... IRIG-B available for FTT Actuators and tellbacks for FTT optics (TBD) FLC FTT /NAS GUIs: Common Requirements Capability to display and operate from: ­ ­ NMT-supplied Linux computer in the MROI control room NMT-supplied laptop in UTE Display -only mode , when controlled by ISS FTT GUI (i) Control of all FTT /NA system functions, including diagnostic functions; Live display of acquisition ...

... click image to view discuss) . ... This is a quick shot of the near-Earth asteroid 2005 YU55 using four consecutive exposures from the Harvard MicroObservatory robotic telescope in Amado, Arizona, on the night of Nov. ... 10, 2015 . This is Comet Lovejoy C/2014 Q2 as it appeared at about 10:30 pm Saturday, Jan. 10, 2015, from my back yard in Belmont, MA, about 5 miles west of downtown Boston. ... Main image: 0.6 second exposure. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Astrophotography Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... RE: Any Suggestions For A Beginner . ... There's three basic types of ways to connect a camera to your telescope, and each has a different set of equipment to go with it. ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Sternberg astronomical institute activities on site testing programs review Victor Kornilov comprehensive/characterization/of/astronomical/sites > kislovodsk/russia/2010/october/4-9 > Introduction This presentation responds on our activity in 5 last years only, inspite of that in SAI site testing researches have been started many years ago. ... More detailed discussion is devoted to MASS and DIMM measurements processing, some additional effects which were taken in account in last year. ...

... GALAXY: A galaxy is made up of billions or trillions of stars bound together by their own gravity. ... HELIUM (He): The second element in the periodic table, has 2 protons, 2 neutrons, and is a noble gas. ... Helium melts at -272.2 degrees Celsius, and boils at -268.934 degrees Celsius. ... HYDROGEN (H): The first element on the periodic table, is a gas, and has an atomic mass of 1.00794 amu. ... Hydrogen melts at -259.34 degrees Celsius, and freezes at -252.87 degrees Celsius. ...

... PubliУ? le 13/08/2012 par Comolli Lorenzo . Date : 06/06/2012 . Lieu : Pian dell'ArmУљ, Italian Apennines . MatУ?riel de prise de vue : TEC 140 + webcam b/w . Commentaires : Venus aureole at egress. ... This image is a composition of a short exposure for the Sun (time 4.46.55 UT) and long exposure for the aureole (time 4.46.28 UT). ... Commentaires : Sunrise with Venus and the green rim. Note also the differential refraction in the Venus disk (red rim above, blue-green rim below). ...

Уведомление о возможности осуществления преимущественного права приобретения дополнительных обыкновенных именных акций Открытое акционерное общество «Красногорский завод им. С.А. Зверева» (место нахождения: 143403, Московская область, г. Красногорск ... регистрационный номер 11025002863247) (далее также - «Общество» или «Эмитент») настоящим уведомляет о возможности осуществления акционерами преимущественного права приобретения размещаемых ...