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1. http://www.astro.louisville.edu/software/xmtel/archive/xmtel-5.2/BUGS
... The current version 5.2.1 will see only minor additional revisions through 2010. October 14, 2010 =============== To do: Add home on startup of bisque/mks Add southern hemisphere tracking direction change to bisque/mks Check southern hemisphere mappings in bisque/mks Check lower horizon limit Known problems on release of 5.2.1: With 64-bit OS's there are warnings from Motif on compilation. ... Pointing corrections, while available in software, are not fully tested. ...
[ Сохраненная копия ]  Ссылки http://www.astro.louisville.edu/software/xmtel/archive/xmtel-5.2/BUGS -- 2.8 Кб -- 14.10.2010
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2. ASP: Using Multicultural Dimensions to Teach Astronomy
... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/edu/publications/tnl/53/multicultural3.html -- 12.7 Кб -- 02.10.2012
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3. http://hea-www.harvard.edu/ECT/pdf/stonecircles.pdf
Stonehenge and Timekeeping Something we have not talked about much in the Threads is the fact that the position of the sunrise on the horizon changes during the year. ... One of the best examples is Stonehenge, near Salisbury in England, which incorporates a certain special date into its design. ... The idea is that you stand in one place and watch the sunrise from that place on the special day. ... The two stones will always line up with the sunrise only on that special day. ...
[ Текст ]  Ссылки http://hea-www.harvard.edu/ECT/pdf/stonecircles.pdf -- 41.0 Кб -- 26.10.1998
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4. strbs: Star Tracker BoreSight calculation
... strbs instrument=<instr> ra=<ra> dec=<dec> apos=<apos> odffixout=true|false . bstoolsout=true|false . ... Given the prime instrument instr and its viewing direction in terms of Right Ascension and Declination of the boresight + astronomical position angle strbs computes the viewing direction of the star tracker and associated position angle - result is written to stdout in verbose form (default) or as an odffix command line if odffixout =true or as an insbs command line if bstoolsout =true. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/8.0.0/doc/bstools/node4.html -- 4.5 Кб -- 02.07.2008
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5. Planetary alignment
. Yellow = Sun . Purple = Mercury . Pink = Venus . Blue = Earth . Red = Mars . Orange = Jupiter . Green = Saturn . The first point of Aries (the direction of the Sun as viewed from the Earth at the time of the northern vernal equinox) is towards the right. Relative sizes of Sun and planets are not to scale. Venus, Mars and Saturn will be within a triangle less than 3 degrees on each side on 2002 May 6th, as seen from the Earth. Other links Last revised: 2002 May 1st .
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~dja/planets/align6th.html -- 2.1 Кб -- 01.05.2002
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6. Meade Instruments Corporation - ETX-90EC and Autostar Frequently Asked...
... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... ETX-90AT and Autostar Frequently Asked Questions . ... Which of the Autostar alignment procedures is recommended for viewing celestial objects right out of the box? When using Autostar, how important is leveling the telescope and pointing it to true north before alignment in the Alt/Az or Polar modes? ... Meade ETX-90EC Astro Telescope . ... Copyright 2006 Meade Instruments Corporation, All Rights Reserved. ...
[ Сохраненная копия ]  Ссылки http://www.meade.com/support/etxautofaq.html -- 19.0 Кб -- 22.08.2008
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7. XWare > APOD
... With a coronal mass ejection (CME) headed our way and an immense sunspot group tracking across the solar photosphere, skygazers should be on the alert. Chandra Deep Field . ... The brightest comet in recent years has continued into the outer Solar System and is now further from the Sun than Saturn. ... Jupiter, Saturn and Messier 45 . ... Brilliant Venus falls out of the evening sky as March ends, but Jupiter and Saturn remain well up above the western horizon. ... Barred Spiral Galaxy NGC 2903 . ...
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/db/xware/apod.html?page=56&d=2002-09 -- 15.2 Кб -- 12.04.2016
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8. Frequency Frame Alignment
... When time averaging a series of scans together, it is possible that the velocity scales are not exactly aligned. ... ASAP> scans.freq_align() ASAP> av = average_time(scans) . ... In these cases run with perif=True and all rows of a source will be aligned to the same frame. ... ASAP> scans.freq_align(perif=True) . To average together data taken on different days, which are in different scantables, each scantable must aligned to a common reference time then the scantables averaged. ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/computing/software/asap/cookbook/node44.html -- 5.1 Кб -- 05.02.2013
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9. Polar Alignment Using The Star Drift Method - an Astronomy Net Article
Polar Alignment Using The Star Drift Method . Articles | ... This method with, a little practice, can give you reasonable polar alignment within one half hour. ... If the star drifts northward, your scope is west of the pole. ... Remember that as your adjustments get you closer to the pole, the star will drift slower and you must wait longer to detect a north-south drift. If the star drifts south, you are east of the pole and you must turn the mount towards the west. ... www.astronomy.net . ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.net/articles/16/ -- 16.2 Кб -- 09.04.2016
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10. Solar Tracker (OSD)
... Determination of the direction towards the center of the Sun’s visible disc relative to spacecraft axes. ... The direction to the Sun is computed in the instrument coordinate system relative to the pixels' position on the linear CCDs, illuminated with the light passing through the coding mask. ... less than 0.1 deg./s                                        3 arcmin . ... Field of view, deg . in the plane OXZ                                           –60…+60° . ... Optical Solar Tracker (OSD) . ...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/innov/eng/sd21.htm -- 6.8 Кб -- 02.10.2006
[ Сохраненная копия ]  Ссылки http://www.cosmos.ru/innov/eng/sd21.htm -- 6.8 Кб -- 02.10.2006
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11. The Sky Above Us
... And night unto night revealeth knowledge; . ... They noticed that the stars in that celestial canopy, the "firmament," maintained fixed patterns-- constellations --night after night. ... Like a globe, the sphere of the sky has two points around which it turns, points that mark its axis --the poles of the celestial sphere. ... The axis around which the Earth spins points in a certain direction in the sky, and that is also the direction of the pole star (or more accurately, the northern celestial pole...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/magbase/REFMAN/STARGAZE/Ssky.htm -- 11.0 Кб -- 11.03.1999
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12. http://www.naic.edu/~phil/calcb/gain02aug01.html
... The data was taken between 18 hours and 4 hours AST. ... Figure 1 plots the total power za pointing error versus za (top) and azimuth (bottom) for 4500 Mhz. ... Figure 2 shows the azimuth pointing error versus za (top) and azimuth (bottom) for 4500 Mhz. ... The gains for za less then 2.5 should probably be ignored. ... Figure 4 is the gain versus azimuth. ... Figure 5 has the gain for 4500 Mhz (top) and the gain after correction for any pitch, roll, and focus error (done in software using a model). ...
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