Generally the atmosphere is hazy; and this is caused by the falling of impalpably fine dust, which was found to have slightly injured the astronomical instruments
. The morning before we anchored at Porto Praya, I collected a little packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the masthead.
In preparation for the IOAA 2019, these students received special training on conducting measurements, solving mathematical problems, and using telescopes and other astronomical instruments
. I am glad to see our students' continuous interest in this increasingly important field, and wish them luck at this year's Olympiad." Launched in 2007, in Thailand, the Olympiad aims to inspire the next generation of astronomers by encouraging them to study the subject at university level.
India, July 18 -- Breakthrough Listen is an ambitious project that is using a number of astronomical instruments
over a period of ten years to detect signs for advanced extraterrestrial civilisations.
It's the Jaipur version of Greenwich Observatory, a collection of 19 huge astronomical instruments
, built by King Sawai Jai Singh II in 1734.
While the study of other planetary systems remains a challenge, even for 30-meter-class telescopes, our own solar system presents many opportunities for new discoveries with the next generation of astronomical instruments
. Obviously, ground-based telescopes will never be able to compete with spacecraft visiting other worlds, but except for NASA's Juno orbiter at Jupiter, at present there are no planetary explorers observing the giant planets at close range.
The team worked with the European Southern Observatory using astronomical instruments
so accurate they can detect changes in a star's velocity as small as 3.5 kilometers (2.2 miles) per hour -- a gentle walking pace.
The Heritage Library contains 50,000 historical and heritage items, including more than 4,000 manuscripts, more than 1,400 historical maps, dozens of atlases, astronomical instruments
, navigational instruments, 70,000 historical images, and other heritage artifacts.
Tracing the ancient art of determining routes to Makkah by use of astronomical instruments
that located guiding stars and the direction of the Qibla, the exhibition will display original tools from the Zayed National Museum permanent collection, such as the copper astrolabe, invented by Ahmad Bin Mohammad Bin Ebrahim, in Morocco, around the year 1123 AH (1711/1712 AD).
The seventeenth-century print on the cover of this new edition along with another seventeenth-century print on page 19 suggest the confusion, for they show Johann Adam Schall von Bell, a Jesuit astronomer residing at Beijing, portrayed in his costume of first-order Mandarin and surrounded by late-medieval astronomical instruments
. Significantly, the telescope--a European technological invention--is absent, even though Schall introduced it to China for astronomical work.
Holographic gratings for astronomical instruments
were described in a paper by Noboru Ebizuka, RIKEN in Japan, as well as in another paper by Alessio Zanutta, INAF in Italy.
They have been used in astronomical instruments
with great success in both ground-based and space-borne telescopes [7-9] by using complex and expensive cooling systems that can achieve temperatures between 0.1 K and 0.3 K during their operation.