...Although still unseen, and only a black circle that blocks out distantstars, it is visible in the telescopes of the astronomers; itsdistance and its orbital motion have been determined... 
Various 「Astounding Stories, August, 1931」
..."I and my world come from oneof the universes beyond the reachof your telescopes...
Donald Wandrei 「Raiders of the Universes」
...Jeter studied the sky above them through their special telescopes,seeking some hint of the location of the point of departure of thatdevastating column of light...
Arthur J. Burks 「Lords of the Stratosphere」
...The earth below was a blur, save through the telescopes...
Arthur J. Burks 「Lords of the Stratosphere」
...Could all telescopes on the ground pick out their space ship? Yes, saidHadley, and a young scientist in New Jersey was constantly watchingthem...
Arthur J. Burks 「Lords of the Stratosphere」
...But our planet is spinning, racing, with the utmostspeed, and in our astronomical observations we are forced to follow itsmovements, and to incline our telescopes in the direction of itsadvance...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...As it recedes it grows fainter and fainter,until at length it passes beyond the range of the mostpowerful telescopes made by man, and is seen no more...
E. Walter Maunder 「The Astronomy of the Bible」
...Hestudied science when he could, and hired a telescope, until he learnt to makehis own specula and telescopes...
George Forbes 「History of Astronomy」
...Procyon is one of our nearest neighbors in space, at a distance of tenlight years, and is attended by a very faint companion which is onlyvisible in the largest telescopes...
William Tyler Olcott 「A Field Book of the Stars」
...Many readers of this book may be the fortunate possessors ofsmall telescopes...
William Tyler Olcott 「A Field Book of the Stars」
...The ring then would have been little more than afine line of light as seen with one of our powerful modern telescopes...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...That artificiality has already disappeared under better seeingwith more powerful telescopes...
E. Walter Maunder 「Are the Planets Inhabited?」
...Observations were made of transits of Mercury andVenus, and refracting and reflecting telescopes were invented...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...Large telescopes revealmultitudes of stars utterly beyond the power of enumeration, nor do theyappear to diminish in number as depth after depth of space is penetratedby powerful instruments...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
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