GIGANTIC TELESCOPE LENS
A 41in telescope lens now being constructed at Newcastle for a Siberian observatory is not the “world’s biggest,” .though it is, perhaps, the biggest used in any refraction telescope. It is a pigmy, however, beside the lOOin lens of the Mount Wilson reflecting telescope, which is by no means the biggest possible. This lens weighs four tons, and a special motor road had to be constructed up Mount Wilson for it. It took ten years to grind and polish, the process being completed by a long course of rubbing with silk handkerchiefs.
The lens was first cast at tbe close of the last century, but after many years’ work had been done on it, it was found to have a flaw in it, and the work had to bo repeated.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/NZTIM19251209.2.145
Bibliographic details
New Zealand Times, Volume LII, Issue 12315, 9 December 1925, Page 11
Word Count
133GIGANTIC TELESCOPE LENS New Zealand Times, Volume LII, Issue 12315, 9 December 1925, Page 11
Using This Item
Stuff Ltd is the copyright owner for the New Zealand Times. You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons BY-NC-SA 3.0 New Zealand licence. This newspaper is not available for commercial use without the consent of Stuff Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.
Log in