. Spacewalking astronauts service the Hubble Space Telescope in February 1997. Among their tasks was the installation of STIS. NASA

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... It is a simple 1 X finder scope that mounts to almost any telescope. ... It projects three red circles into space, allowing you to center the scope on bright stars or planets. ... In many cases it is the only finder scope you'll need. (in bright city skies, it will be more difficult to use). Place the Telrad circles between the bright stars shown around the Messier object you wish to view, and with you widest field eyepiece (usually the lowest power) you should find the Messier Object very easily. ...

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... LABOROSCOPES . ... Setting the New Perfomance Standard in Laboratory and Clinical Microscopy.. ... Offering the advantages of all three major contrast techniques – Brightfield, Phase Contrast and Darkfield – and perfectly suited for photomicrography, the LABOROSCOPE? always delivers sharp, crisp images, setting the new performance standard in laboratory and clinical microscopy. ... 1 EM-15X focusing eyepiece with 2 standard graticules; a 10mm / 100div scale and a 10mm x 10mm / 400 square grid. ...

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• Multiscopes
• POLAM-L
• Lumam

... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... This image shows Saturn approximately as it appears under good atmospheric conditions through the Meade ETX telescope at a power of 100x. Example: Two telescopes, one with a main lens of 2" diameter (or aperture) and one with a main lens of 4" diameter are focused on the planet Jupiter. ... In the refracting telescope (a) light is collected by a 2-element objective lens and brought to a focus at F . ... about meade | ...

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Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... History . ... Site . ... Originally, the shop area of the building was to be about 25 feet wide by 50 feet long, and the observatory was to be about 25 feet wide by only 25 feet long. In early 1997, the University of Iowa inquired if it would be possible to place their Iowa Robotic Observatory telescope at our site. ... Univ. of Iowa . ... Apogee SITe 1kx1kx24um . ... Winer Observatory . ... Equatorial . ...

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... ARTICLE: The Adventurous Search For The Astronomical Unit . ... Kepler himself had suggested to use the rare occasions of Venus transiting (crossing) the solar disk to measure our distance to the planet. ... Due to the orbital inclination of Venus against the ecliptic of 3.5°, a Venus transit is so rare that it happens only at intervals of 121.5 years, 8 years, 105.5 years, 8 years and so on. ... Crabtree witnessing the transit of Venus 1639 . ... Transits of Venus - The Quest for the Solar Parallax...

207. http://site2010.sai.msu.ru/static/doc/GHerriot_site2010.ppt.pdf