... HST . ... Focus . ... Missions . ... Data . ... In addition to a long term shrinkage of the OTA, HST undergoes focus variations having a period of an orbit, and also lower frequencies as combinations of sun angle, off-nominal roll, earth heating, shadowing by parts of the vehicle, and day/night produce longer term temperature trends. ... This model does not provide a complete description of thermal focus variations. ... Tabulated below are links to quarterly files containing focus model values. ...

... The various Inst :Focus scripts allow you to take a series of exposures over a range of secondary mirror focus values, report the resulting FWHMs and optionally adjust the focus to the estimated best value. ... Slitviewer scripts assume the focus star is on the boresight. ... Focus scripts runs in three phases: . ... The script moves the boresight so the focus star is visible next to the slit, sets the focus to Center Focus, takes an exposure and tries to measure the star's FWHM. ...

... For high spectral resolution observations the devices permanently located at the N2 focus of the BTA are used (Klochkova, 1995, Panchuk, 1995). However for a number of tasks to be performed, it is needed to rule out the influence of the second and third mirrors, i.e. to realize the high spectral resolution ( ) directly at the prime focus. ... Examine the principal parameters of the PF echelle spectrometer, which is equivalent in spectral resolution to the CCD-equipped MSS (Panchuk, 1995). ...

... ROTPAT causes SCHED to expand pointing patterns to include a raster in focus and rotation. The position offsets in this raster are specified by FOCOFF and ROTOFF . ... ROTPAT have a value which is the number of positions in focus/rotation in the pattern. ... Note that the overall scan must be ptslew plus rotpat times ( 2 times ptdur plus N times 10 times ptdur ) long to fit a full pattern with N pointing loops at each focus/rotation position. ... Argument: A number of focus/rotation positions. ...

... Астрофорум - астрономический портал ? ... Астрономическое оборудование и аксессуары (Модераторы: zlyden , Denk36 ) ? Clement Focuser . ... Рейтинг: +84/-10 . Ответ #60 : 31.03.2010 [22:35:36] ? ... Записан . ... http://www.astronica.ru/2010/11/27/clement-focuser/ . ... Цитата: Mikhail Nalivkin от 29.11.2010 [13:20:31] Собрал что-то похожее на фокусер Клемента, даже ездит . ... Цитата: Mikhail Nalivkin от 29.11.2010 [15:51:19] По 2 пружины - многовато для моего радиуса изгиба. ...

... Do you know why we have seasons on Earth? ... Even if you offer students the great activities developed by the Harvard researchers, or the great activities in ASP's teacher resource book, The Universe at Your Fingertips , your students still won't learn anything unless they work hard and think about their work. ... But none of these are worth a hoot unless they are also accompanied by hard work on students' part. ... The key to success in astronomy is the same as it is in everything else: hard work....

... Bojan Nikolic web pages (r. 329) . Zernike Polynomials . ... Example of an OOF analysis for the GBT . Observed data and analysis . ... Sample data . ... Out-Of-Focus (OOF), or phase-retrieval, holography is a technique to measure the shape of surfaces of radio telescopes (i.e., to do antenna metrology). ... There are two recent papers describing OOF holography; see the publications page . ... The OOF wiki pages . ... My old OOF holography pages at the MRAO. ... Out-Of-Focus (OOF) Holography . ...

Next: Фокусировка при использовании CCD Up: Существующие команды, специфичные для Previous: Существующие команды, специфичные для . Команда фокусировки предназначена для получения на одном CCD-кадре нескольких экспозиций объекта (звезды) с разными значениями фокуса телескопа. ... Команда имеет вид: FOCUS/NICE EXP [NUM] [FOCUS] [STEP] [FILTER] [GAIN] [TPREF] . ... FOCUS/NICE EXP=3. ... Параметры FILTER и GAIN устанавливают локальные значения (значения для одной текущей экспозиции). ...

... Gallery . ... CCD imager on Nasmyth B focus . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: CCD imager on Nasmyth B focus . Description: Image: Dione Smith . ... Dimensions: 417 x 417 px . ... CCD imager on Nasmyth B focus Image: Dione Smith . Powered by Gallery 3.0.9 (Chartres) . ...

... On 27jun01 4 sources were tracked using the cband system at 4500, 4860, 5000, and 5400 Mhz. ... The pitch, roll, and focus correction (PRF) is limited to a range of azimuth and zenith angles because of the large correction we currently have and the limited throw of the tiedowns. ... The source J1143+221 went from 3 K/Jy to 6 K/Jy within 1.5 degrees za when the PRF correction was turned on. ... The source J0827+293 went from 4 K/Jy to 7 K/Jy within 1 degree za when the PRF correction was switched on....

Университет . ... Наука Патенты Программа Deep Focus . Год: 2013 г., . ... Дата публикации: 2013-01-09 . ... 2013 | ... Самарский государственный аэрокосмический университет имени академика С.П. Королева . национальный исследовательский университет)" . ... Тел.: 846) 335-18-26 Факс: (846) 335-18-36 . Содержание Интернет-портала СГАУ: . тел. +7 (846) 267-45-60, . e-mail: webmaster@ssau.ru . ... Тел.: (846) 267-44-99 . ... СГАУ 2016 http://ssau.ru | http://сгау.рф | ...

Общая Астрономическая Конференция > Все про астрономическое оборудование > Астрономическое оборудование . Orion SkyView Pro 8 EQ w/Crayford Focuser . ... Поиск . ... galileo . ... Отправить личное сообщение для galileo . Найти еще сообщения от galileo . ... Лунные феномены (редкие, необычные явления) Жизнь астрономов-любителей Анонсы астрономических мероприятий Астрономические клубы Наш "Старлаб" . ... Телескопы orion . ... окуляр ORION STRATUS . ... Orion ApexT 90mm Min-EQT Mak-Cass . ...

... Легкая утепленная куртка. ... Артикул: 48691 Цвет: морская волна Состав: 50% шерсть, 50% акрил Описание: теплая двойная шапка с помпоном, выполнена из полушерсти, декорирована рисунком из модных кос. ... Машинка Ford Victoria 1953 голубого цвета с белой крышей - это точная копия настоящего ретро-автомобиля в масштабе 1:24. Автомобиль Ford Victoria был выпущен в 1953 году и отличался оригинальным дизайном с заниженной крышей и хромированными элементами кузова. ... Пол: Мужской . ...

The AstroGuide . ... AstroGuide | ... Other Sites . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Web Site . ... Awful Christmas shopping experience. Site said everything I wanted was in stock when I placed the order, two weeks before Christmas. ... No web site-to-inventory integration, no order confirmation via email, unavailable customer service, and an incomplete order. This was the recipe for my abysmal experience with Focus Camera. ... Web . ...

... POLAM-L . ... HOME . ... ABOUT LOMO . PRODUCTS . MICROSCOPES . ... SURGICAL MICROSCOPES . ... Home Products Microscopes POLAM-L Focusing Knob . ... One full revolution of the large knurled knobs corresponds to 6.3mm (coarse) and 0.25mm (fine) of the stage’s vertical movement. The coarse focus has a travel range of 33mm and the fine – 2.5mm. ... LOMO America, Inc. ... 847) 215-8800, Fax: (847) 215-9073 . ... 2000-2016 LOMO America,Inc. ...

. Album : asv-album :: Technical photos :: 2011 ::focusing . Up . 700 3728 28-70 28 . 700 3729 28-70 35 . 700 3730 28-70 70 . 700 3731 50 . DSC16523 18-200 200 . DSC16524 18-200 135 . DSC16525 18-200 70 . DSC16526 18-200 35 . DSC16527 18-200 24 . DSC16528 18-200 18 . DSC16529 18-55 18 . DSC16530 18-55 24 . DSC16531 18-55 35 . DSC16532 18-55 55 . DSC16533 . DSC16533 50 . Photo album generated by album tool a MarginalHack by David Ljung on Mon Jan 19 20:21:22 2015 .

... The Nasmyth platform for the old Visitor Focus on VLT-Melipal (UT3) as seen from the Nasmyth access platform on the fixed part of the telescope enclosure. ... Detailed view of the opening and the rail. ... View from the Nasmyth platform towards the (fixed) Nasmyth access platform. ... View from the Nasmyth access platform towards the Adapter/Rotator. ... This is the only position where direct access from the Nasmyth access platform is possible; telescope azimuth motion has to be locked in this case....

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

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STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Meade 4M Community . ... Telescopes . LX850 Series . ... LX600 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Optical Tubes . ... Meade 8x50 Rear Focus Viewfinder #07828. Easily locate and center deep sky objects with this straight-through viewfinder with convenient rear focus. ...