Compilation of position angles . ... Search an object in the catalogue of position angles . This catalogue (table a103 in the database) presents the compilation of the position angles for galaxies. The position angle of the major axis is counted in degrees (0 to 180) from the North to the East: PA=0 corresponds to a galaxy whose longest axis is oriented North-South. Galaxies are not pure ellipsoids and therefore the position angles may varies with the considered surface brightness level. ...

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• Estimating the angle of rotation
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... This lesson plan supplements: . 4 "Angle of the Sun's Rays" at Sunangle.htm , . ... At that time, in the middle, northern latitudes (e.g. in the continental US or Europe) the Sun is exactly south of the observer. ... At any given place, at what time of the day do the Sun's rays fall most steeply (towards the perpendicular) onto the ground? ... The rays fall steepest at noon, when the Sun is highest above the horizon; The angle is least steep at sunrise and sunset. ...

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... Meta Index / Home Page / Parameter types . Angle parameters are intended for right ascensions and declinations, where conversion from hours/minutes/seconds or degrees/minutes/seconds may be needed. ... Note that the maximum range of the angle type is [-360,360] degrees. ... xxdxxmxx[.xxx]s (degrees, minutes and seconds) xxhxxmxx[.xxx]s (hours, minutes and seconds) [(+|-)]xxx[.xxx] (decimal degrees) . ... Note: Angle parameters are accessed by the task as a real value, in degrees. ...

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... Alfa_ang is a GUI for the rotang routine. The purpose of this routine is to calculate the optimum rotation angle for ALFA given the RA and Dec of a source and the date and time of the observation. The routine also returns the azimuth and zenith angle of the telescope at the requested time, thus it can be used to find the correct rotation angle and azimuth for the Fixed Azimuth Drift Scan observing mode used by the AGES drift precursor observation. ... To run alfa_ang at Arecibo: . ...

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• ALFA Sky Angle Tracking
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... Analysis of the WFPC2 saturated star images indicate that the large angle scattering (>3" from a star) is significantly higher than expected. ... The first set was from the SMOV Ghost Check proposal 5615, in which 100 second images of d Cas (V=2.7) were obtained at the center of each chip in F502N. The second set was a series of 6 second exposures of Vega (V=0.0) centered on WF2 through F410M (WFPC2 GTO proposal 5205). ... The source of the WFPC2 scattering may be the CCDs. ...

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... Forum . ... Recent Topics . ... MAO main . Info . Definition of Polarization Angle . ... От: "Claus Leitherer" . ... Тема: Definition of Polarization Angle . ... Please take note of the attached IAU recommendation concerning the definition . of the polarization angle in astronomical measurements. ... www.mao.kiev.ua/images/postbyemail/Polarization.pdf . ... Board Categories MAO main - Info - MAO - news - Flame Technical - Technical Support(Forum)(Техподдержка(Форум)) . ... MAO NASU . ...

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Deriving the sine or cosine of an arbitrary angle takes a bit more math than is covered here. ... Note first of all that a right-angled triangle contains two angles. ... Because the side opposite to A is the one adjacent to (90њ- A), it follows that the sine of one angle is the cosine of the other, and vice versa: . ... Consider the triangle PQR (drawing) with all three angles equal to 60њ. ... If we want the angle A to grow in equal steps of 15 o , we still need the sine and cosine of 15њ and 75њ. ...

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... Tools . ... begin{equation*} \frac{\vartheta}{\mathrm{rad}} = 2 \pi r = 2 \pi \end{equation*} . ... begin{equation} \frac{\Omega}{\mathrm{sr}} = 4 \pi r^{2} = 4 \pi \label{eqn_solidangle} \end{equation} . ... begin{equation*} \frac{\Omega}{\mathrm{sr}} = 2 \pi \, [1 - \cos(\vartheta)] \end{equation*} . ... end{equation*} . ... begin{equation*} \cos(\alpha) = \sin(\vartheta_{1}) \sin(\vartheta_{2}) + \cos(\vartheta_{1}) \cos(\vartheta_{2}) \cos(\varphi_{1} - \varphi_{2}) , \end{equation*} . ...

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Общая Астрономическая Конференция > Товары для астрономов > Барахолка . продам широкоугольник minolta standard 10х50 wide angle BAK4 (Япония) . ... EQ-3 mount+EQDrive upgrade kit (motor)+ EQDrive Standard SL (GOTO) . монтировка для бинокля Parallelogram Standard 2 +orion 25x100 . ... Лунные феномены (редкие, необычные явления) Жизнь астрономов-любителей Анонсы астрономических мероприятий Астрономические клубы Наш "Старлаб" . ... Продано: Окуляр WO wide angle 20mm 66гр 1.25" . ...

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• MEADE Окуляр QX Wide Angle 26 мм (2'') [Архив] - Общая Астрономическая
• продам широкоугольник minolta standard 10х50 wide angle BAK4 (Япония) [Архив] -
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... 21.04.2010 . ... Still, no known cat could have created the vast Cat's Paw Nebula visible in Scorpius . At 5,500 light years distant, Cat's Paw is an emission nebula with a red color that originates from an abundance of ionized hydrogen atoms. ... Pictured above , a wide angle, deep field image of the Cat's Paw nebula was culled from the second Digitized Sky Survey . ... April 2010 . ... 2009 2010 . ... Publications with keywords: emission nebula . Publications with words: emission nebula . ...

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• Journal "Peremennye Zvezdy"

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 April 21 . Wide Angle: The Cat's Paw Nebula . ... Still, no known cat could have created the vast Cat's Paw Nebula visible in Scorpius . ... Pictured above , a wide angle, deep field image of the Cat's Paw nebula was culled from the second Digitized Sky Survey . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• The Sparkle Plug-In: The Sparkle Dialog Box
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Chapter 11 (chapter 10 in the 2nd edition).

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... Астрономический телескоп ETX-80AT-TC . ... Окуляр QX Wide Angle 30mm (2") . ... Поле зрения 70 градусов . ... Окуляр парфокален (то есть не требует перефокусировки при смене увеличения) не только с другими окулярами серии 4000QX, но и большинством других 2" окуляров от Meade и многих других производителей. ... Компактные цифровые фотоаппараты . Зеркальные цифровые фотоаппараты PENTAX . ... Окуляры PENTAX . ... Copyright PENTAR ї2004-2016. (бинокли, цифровые фотоаппараты, телескопы) . ...

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• PENTAR: Окуляр Super Wide Angle 34mm (2")

... We can help students grasp the significance of Hubble's extremely keen eye, and learn a bit about angles and math in the process, with the following in-class activity. ... Looking through binoculars or telescopes allows us to magnify a small section of the sky. To measure sizes or distances in that small section, astronomers divide a degree into 60 smaller pieces called arcminutes, and further subdivide minutes into 60 smaller sections called arcseconds. ... 30 feet = . ... 36 seconds . ...

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Eyepieces Forum Message . ... Eyepieces ћ Meade ћ Misc. ... Eyepieces | ... Need Super Wide Angle (SWA) Eyepiece ? ... H. 2inch/32mm/6-element/80Deg.A.F. SWA eyepiece US$115 . I. 1.25inch/14~25mm/6-element/75-80Deg.A.F. SWA eyepiece US$70-90 . J. 1.25inch/6.5~40mm/4-element Plossl Eyepiece US$25~30 . ... 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" . ...

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Median Twilight Image . all frames normalized by their median before averaging and corrected for 4-port structure) . Median of Normalized Twilight Images at Rotator Angle 0 . Median of Normalized Twilight Images at Random Rotator Angle . Time Frame and Rotator Angle Distribution . B_UT2_2CCD: 134 frames . ... distribution of rotator angles) . U_UT2_2CCD: 106 frames . ... uncorrected median twilight image) . B_UT2: 298 frames . ... U_UT2: 246 frames . ... B_UT3: 266 frames . ...

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• Mario van den Ancker
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• FORS2: Sky Flats and Rotator Effect

.

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... Class . ... FIELD | ... java.lang.Object ij.process.EllipseFitter . public class EllipseFitter . ... double . angle . ... Initialized by makeRoi() . ... drawEllipse ( ImageProcessor ip) . ... makeRoi ( ImageProcessor ip) . ... Field Detail public double xCenter . ... public double angle . ... The fit parameters are returned in public fields. public void drawEllipse ( ImageProcessor ip) . Draws the ellipse on the specified image. public void makeRoi ( ImageProcessor ip) . ...

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• ImageStatistics (ImageJ API)

... Coordinate system . It is necessary to specify the coordinate system for the drilling of plug-plates so that the drilling file (currently named plPlugMap), plate drilling, cartridge, rotator wrap and the rotator itself are compatible. ... The TCC rotator angle (object system) is defined to be 0 degrees for this orientation. ... Thus, the rotator angle gives the conventional astronomical position angle on the sky of the y axis (although Russell won't acknowledge this necessarily). ...

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• Secondary baffle measurements
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STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Meade 4M Community . ... Meade Instruments . ... Telescopes . LX850 Series . ... Series 5000 Xtreme Wide Angle 20mm 100ТА Eyepiece (2") . ... Meade Series 5000 Xtreme Wide Angle 20mm Eyepiece (2") #07752. Featuring a staggering 100 degree apparent field of view Meade Series 5000 Xtreme Wide Angle Eyepieces use 9 optical elements to achieve a high contrast image with razor sharp correction all the way to the edge of the field. ...

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• Series 5000 Xtreme Wide Angle 14mm 100ТА Eyepiece (2")
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• Meade Series 5000 Ultra Wide Angle 8.8mm Eyepiece (1.25")