... V. Sign Conventions Aberration -Free Image Spherical Wavefront , Defocus, and Lateral Shift Angular, Transverse, and Longitudinal Aberration Seidel Aberrations A. Spherical Aberration B. Coma C. Astigmatism D. Field Curvature E. Distortion Zernike Polynomials Relationship between Zernike Polynomials and Third-Order Aberrations Peak-to-Valley and RMS Wavefront Aberration Strehl Ratio Chromatic Aberrations ... Term # 3 represents focus. ... W is the mean wavefront OPD. ...

... Твердое ядро Земли диаметром около 2400 км вращается в год на 0,25-0,5 градуса быстрее, чем остальная планета, сообщают ученые из Колумбийского университета и Университета Иллинойса в пятничном выпуске журнала Science. ... Проанализировав эти различия, они вычислили, что ядро вращается немного быстрее, чем остальная планета, сообщает АР. ... Однако в телефонном интервью Сун заявил, что скорость может со временем меняться и что иногда ядро вращается медленнее остальной планеты. ... Планета Земля . ...

Астрономическая картинка дня . ... Овраги Марса . ... Пояснение: Недавно обнаруженные редкие овраги на Марсе могут указывать на наличие в настоящее время влизи поверхности планеты жидкой воды , что дает надежду на существование марсианской жизни . Слишком малые для наблюдения с прежних орбитальных станций эти странные формы марсианского рельефа были найдены только на приблизительно 250 из более чем 20000 изображений с высоким разрешением, полученных космическим аппаратом Mars Global Surveyor . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The mathematical modelling and information support subdivision consists of 2 doctors of science, 6 Ph.D., and 2 engineers. Subdivision heads: Ilyin N.V., Ponomartchuk S.N. The mathematical modelling and information support subdivision's main tasks are: . SDC ESCEIR site information support, . Mathematical modelling of the following problems: . ...

... Тhis new concept touches our simple lives, yet for those intrigued by the natural sciences, especially experts deeply engaged in the 'eternal' questions of general geology and astronomy, it is all the more fascinating. The problems to be faced by any theory for the formation of the Solar System . Any theory has to account for certain rather tricky facts about the Solar System. These are in addition to the obvious facts that the Sun is at the centre with the planets in orbit around it. ...

... О Далекой Галактике . ... Теперь в Далекой Галактике вы всегда можете увидеть свежие фотографии Солнца. ... Форум . Форум "Далекой Галактики" - прекрасное место для общения всех астрономов. ... Новости из космоса . ... Подписаться на новости Далекой Галактики Вы можете здесь: . ... Новости из Далекой Галактики - популярно об Астрономии . ... Если вы хотите выразить свое мнение о сайте "Далекая Галактика", или просто почитать мнения других посетителей - пожалуйста, заходите в Гостевую книгу . ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

MAIN PAGE . ... LINKS . ... AAL Members Sites . ... Amateur Astronomy . ... Mars Missions . Observatories Telescopes . ... astronomylinks.com. - astronomy and space links, shortcuts, favorites and bookmarks . ... Mel Bartels' Homepage about Amateur Telescope Making and a lot of interesting links (thx to Hugues Laroche for the link!) ... STEREO (Solar TErrestrial RElations Observatory) consists of two space-based observatories - one ahead of Earth in its orbit, the other trailing behind . ...

... Space flight . Crew training . ... The contemporary world opinion, while welcoming the efforts of different states aimed at realization of manned space flights, still considers these efforts insufficient, over-bureaucratized and too slow. ... The more up-to-date is the basic training program for a cosmonaut/astronaut or a manned space flight participant (hereinafter referred to as the student) that is being offered to your interested attention. ... Pre-flight space training (PFST). ...

Postal address: Australia Telescope National Facility . ... Australia Email : Brian.Boyle -AT- csiro.au . ... Postal address: University of Sydney, School of Physics . ... University of Sydney . ... Postal address: Mullard Space Science Laboratory, . ... UK Email : nsl@mssl.ucl.ac.uk Postal address: Department Of Physics . ... Postal Address: Department of Physics . ... Postal address: Department of Physics . ... UK Email: ">Tom.Shanks@durham.ac.uk Postal address: Astrophysics Research Institute . ...

... Р?С?С?С?Р?Р?Р?Р?РеС?Р?С?Р?РеР? ... Launched on February 17, 1996, the Near Earth Asteroid Rendezvous (NEAR) mission is to be the first of NASA's Discovery missions, a series of small-scale spacecraft designed to proceed from development to flight in under three years for a cost of less than $150 million. ... The ultimate goal of the mission is to rendezvous with and achieve orbit around the near Earth asteroid 433 Eros in February, 1999, and study the asteroid for approximately one year. ...