telescopes - NPZ Optics
... the mounts on a pier or tripod. Different models of telescopes are provided with different mounts. The mount MT-1 has manual slowmotion controls on both axes and is used with TAL-1 telescope. For the first sight-in on, the object, loosen the telescope s Dec. and R.A. locks (1) and move the telesco ...
... the mounts on a pier or tripod. Different models of telescopes are provided with different mounts. The mount MT-1 has manual slowmotion controls on both axes and is used with TAL-1 telescope. For the first sight-in on, the object, loosen the telescope s Dec. and R.A. locks (1) and move the telesco ...
Concept and performance of multiple laser guide stars for 8-m
... considered as the next generation of A0 systems for 8-m telescopes and represents a necessary intermediate step toward A0 systems for Extremely Large Telescopes. Multiple guide stars allow to correct the cone effect which affects single LGS systems and prevents from going to wavelengths shorter than ...
... considered as the next generation of A0 systems for 8-m telescopes and represents a necessary intermediate step toward A0 systems for Extremely Large Telescopes. Multiple guide stars allow to correct the cone effect which affects single LGS systems and prevents from going to wavelengths shorter than ...
View the sky`s greatest nebula
... clouds of dust and gas. In the winter, we see the sky opposite the stellar traffic jam found toward the galaxy’s center. The winter Milky Way is there, but you need a dark sky to see it with unaided eyes. The winter sky is the brightest of the seasonal skies — it contains the highest concentration o ...
... clouds of dust and gas. In the winter, we see the sky opposite the stellar traffic jam found toward the galaxy’s center. The winter Milky Way is there, but you need a dark sky to see it with unaided eyes. The winter sky is the brightest of the seasonal skies — it contains the highest concentration o ...
Chapter 30 - Todd County Schools
... • Most stars have several types of actual motion. • Stars rotate on an axis. • Some stars may revolve around another star. • Stars either move away from or toward our solar system. ...
... • Most stars have several types of actual motion. • Stars rotate on an axis. • Some stars may revolve around another star. • Stars either move away from or toward our solar system. ...
Analysis of Angular Momentum in Planetary Systems and Host Stars
... spin down of low-mass stars2 especially appears to be tied to active surface convective zones (Schatzman, 1962) and stellar winds produced by chromospherically active surfaces (Mestel, 1968). Most rotational slow-down for all stars appears to occur during Pre-Main Sequence (PMS) contraction, but add ...
... spin down of low-mass stars2 especially appears to be tied to active surface convective zones (Schatzman, 1962) and stellar winds produced by chromospherically active surfaces (Mestel, 1968). Most rotational slow-down for all stars appears to occur during Pre-Main Sequence (PMS) contraction, but add ...
Digital Universe Guide - American Museum of Natural History
... http://www.haydenplanetarium.org/universe/. The User is free to download and/or duplicate verbatim copies of the Atlas provided this license and copyright information accompany the Atlas. Modifying the Atlas The user is free to modify the Atlas by either adding data or altering existing data, provid ...
... http://www.haydenplanetarium.org/universe/. The User is free to download and/or duplicate verbatim copies of the Atlas provided this license and copyright information accompany the Atlas. Modifying the Atlas The user is free to modify the Atlas by either adding data or altering existing data, provid ...
Hariprasad comes from well known Jyotish family in Andhrapradesh
... Asiatic Society, Calcutta (Kolkata) published a book “Suryasidhantha” in English by A. K. Chakravarty. It is supposed to be a Research Publication. In pages 113, 114 and 115 he commented on this topic as follows: “…. The language is cryptic, the principle is contradictory to the text itself and the ...
... Asiatic Society, Calcutta (Kolkata) published a book “Suryasidhantha” in English by A. K. Chakravarty. It is supposed to be a Research Publication. In pages 113, 114 and 115 he commented on this topic as follows: “…. The language is cryptic, the principle is contradictory to the text itself and the ...
Spitzer Spectroscopy of Circumstellar Disks in the 5 Myr Old Upper
... Spitzer IRS low resolution spectra were obtained for 26 stars in Upper Scorpius that have an infrared excess: 25 sources were observed for this study during campaign 1067 from 2006 September 14–19 and campaign 1085 from 2007 March 16–21, and one source ([PZ99]J161411.0-230536) was obtained from the ...
... Spitzer IRS low resolution spectra were obtained for 26 stars in Upper Scorpius that have an infrared excess: 25 sources were observed for this study during campaign 1067 from 2006 September 14–19 and campaign 1085 from 2007 March 16–21, and one source ([PZ99]J161411.0-230536) was obtained from the ...
THE HELIACAL RISE OF SIRIUS- Algorithm
... (AV) method8. Though that this method is generally flawed, it gives excellent results for celestial objects brighter than -1.0 mag. because they rise heliacally very close to the horizon. THE OBSERVATIONS To construct my formula I use 3 personal first-hand sightings of the morning appearance of Siri ...
... (AV) method8. Though that this method is generally flawed, it gives excellent results for celestial objects brighter than -1.0 mag. because they rise heliacally very close to the horizon. THE OBSERVATIONS To construct my formula I use 3 personal first-hand sightings of the morning appearance of Siri ...
book_text4
... around the World. Such observations are highly complementary to those made by Hubble since they can exploit the collecting power of much larger telescopes and can be used very effectively to feed such light-hungry instruments as spectrographs. This higher resolution is achieved over a small patch of ...
... around the World. Such observations are highly complementary to those made by Hubble since they can exploit the collecting power of much larger telescopes and can be used very effectively to feed such light-hungry instruments as spectrographs. This higher resolution is achieved over a small patch of ...
Nebulae.The Lagoon and Dumbbell Nebulae
... a remnant of a dying star which is approximately 2 times smaller than the Sun. The star is hot and blue with temperature of 85000K (Most of these stars usually turn into red giants. They lose their mass by ejection of the outer gas layers. These layers expand in space, forming a temporary wrap aroun ...
... a remnant of a dying star which is approximately 2 times smaller than the Sun. The star is hot and blue with temperature of 85000K (Most of these stars usually turn into red giants. They lose their mass by ejection of the outer gas layers. These layers expand in space, forming a temporary wrap aroun ...
Communications in Asteroseismology
... the first results from space asteroseismology are available? Isn’t it odd to celebrate the 65th birthday of a renowned asteroseismologist who is far from retirement at this point? The answer to the first question is easy: at the outset of this meeting, MOST was already in space and COROT was soon to b ...
... the first results from space asteroseismology are available? Isn’t it odd to celebrate the 65th birthday of a renowned asteroseismologist who is far from retirement at this point? The answer to the first question is easy: at the outset of this meeting, MOST was already in space and COROT was soon to b ...
Differential rotation on both components of the pre-main
... an offset in phase. This would manifest itself as a vertical line offset from zero-phase shift in Fig. 3, as an incorrect period would not be latitude dependant. From an examination of Fig. 3, it is obvious that all four maps show no evidence of uniform asynchronous rotation. The binary orbital peri ...
... an offset in phase. This would manifest itself as a vertical line offset from zero-phase shift in Fig. 3, as an incorrect period would not be latitude dependant. From an examination of Fig. 3, it is obvious that all four maps show no evidence of uniform asynchronous rotation. The binary orbital peri ...
NGC 6231: a young open cluster under X-rays
... 610 X-ray sources ~ 60 foreground/background sources ~ 15 O-type stars + 1 WR ~ 18 B-type stars (if any) ...
... 610 X-ray sources ~ 60 foreground/background sources ~ 15 O-type stars + 1 WR ~ 18 B-type stars (if any) ...
to - NexStar Resource Site
... discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is about 9.5 AU from the Sun or over 900,000,000 million miles. Since 1979 it has been visited by the Pioneer and Voyager space craft and will have a visit by the Cassini space craft in 2004. I may be off on ...
... discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is about 9.5 AU from the Sun or over 900,000,000 million miles. Since 1979 it has been visited by the Pioneer and Voyager space craft and will have a visit by the Cassini space craft in 2004. I may be off on ...
Celestial Navitation - National University of Singapore
... the astrolabe. They were also widely used by navigators to obtain measurements to determine the approximate latitude of the vessel as well as the approximate local time. ...
... the astrolabe. They were also widely used by navigators to obtain measurements to determine the approximate latitude of the vessel as well as the approximate local time. ...
PP Chapter 28 Text
... We see the Sun’s luminosity as LSun. If we were on a spaceship twice as far away from the Sun, its apparent brightness would appear A. B. C. D. ...
... We see the Sun’s luminosity as LSun. If we were on a spaceship twice as far away from the Sun, its apparent brightness would appear A. B. C. D. ...
Search For Gas Giants Around Late-m Dwarfs - STARS
... M dwarfs. This survey was the first of its kind undertaken to monitor radial velocity variability of these faint dwarfs. For this unique survey we employed the 10-m Keck II on Mauna Kea in Hawaii. With a resolution of 20,000 on the near-infrared spectrograph, NIRSPEC, we monitored these stars over f ...
... M dwarfs. This survey was the first of its kind undertaken to monitor radial velocity variability of these faint dwarfs. For this unique survey we employed the 10-m Keck II on Mauna Kea in Hawaii. With a resolution of 20,000 on the near-infrared spectrograph, NIRSPEC, we monitored these stars over f ...
ASI 2017 Abstract Book - Astronomical Society of India
... One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different morphological types form and evolve? Does th ...
... One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different morphological types form and evolve? Does th ...
SUB-KILOPARSEC IMAGING OF COOL MOLECULAR GAS IN
... conducted by the South Pole Telsecope (SPT; Carlstrom et al. 2011; Vieira et al. 2010; Mocanu et al. 2013) and Herschel (Negrello et al. 2010; Wardlow et al. 2013) have discovered large numbers of lensed DSFGs. Subsequent spectroscopy and high-resolution imaging have confirmed that the large majorit ...
... conducted by the South Pole Telsecope (SPT; Carlstrom et al. 2011; Vieira et al. 2010; Mocanu et al. 2013) and Herschel (Negrello et al. 2010; Wardlow et al. 2013) have discovered large numbers of lensed DSFGs. Subsequent spectroscopy and high-resolution imaging have confirmed that the large majorit ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.