Telescopes are specialist optical instruments that have been around for over 400 years and are useful for many applications including seafaring, military operations and especially stargazing. But not ...

The winter months are fast approaching the Northern Hemisphere -- meaning longer, darker nights longed for by amateur astronomers. To the beginner, setting out on their first tentative steps to ...

Looking Up is transcribed using a combination of AI speech recognition and human editors. It may contain errors. Please check the corresponding audio before quoting in print. Dean Regas: Edwin Hubble ...

In order to be seen, light from objects needs to reach our eyes. Therefore, objects that are far away don’t reflect enough light back for us to see them. The objective lens of a traditional telescope ...

For thousands of years, humans observed the stars with nothing but our own eyes. But eyes can only get us so far, and to see all the way to the ends of the universe we needed to invent some tools. The ...

As we approach the fourth centennial of the invention of the telescope, the Australian astronomer Fred Watson presents a well-written, up-to-date history of the invention and development of the ...

In the late 1970s, astronomers had a problem: The scale of their telescopes no longer matched the size of their ambitions. To see deeper and deeper into our universe's past, they needed a bigger ...

THOUGH the first edition of this work was published more than fifty years ago, in 1891, it still has value as a standard work on the adjustment and testing of telescope objectives. The firm of Sir ...