|
|
|
0 members (),
251
guests, and
22
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
S |
M |
T |
W |
T |
F |
S |
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
|
29
|
30
|
|
|
|
|
|
|
There are no members with birthdays on this day. |
#481327
Tue 27 Nov 2018 03:17:PM
|
Joined: Feb 2001
Posts: 381,904
Launch Director
|
OP
Launch Director
Joined: Feb 2001
Posts: 381,904 |
Abstract: Currently there is a strong desire to make Earth science less expensive. Freeform optics make these missions less expensive because they allow an optical designer to use fewer mirrors to create roughly the same effect. The main issue with using freeforms is how closely the substrate can be milled to its prescription. Over this summer, our team looked at two freeforms made by Corning Inc. using a brand new process to determine how close these optics are to their set prescriptions and how well... Source: Alignment and Testing for a Freeform Telescope
David Cottle
UBB Owner & Administrator
|
|
CMS The Best Conveyancing solicitors conveyancing quotes throughout the UK
For any webhosting enquiries please email webmaster@aus-city.com
|
|
Forums60
Topics730,006
Posts764,622
Members2,958
| |
Most Online4,158
Jun 21st, 2024
|
|
|
|
|
Copyright 1996 - 2024 by David Cottle. Designed by David Bate Jr. All Rights Reserved.
By using this forum, the user agrees not to transfer any data or technical information received under the agreement, to any other entity without the express approval of the AUS-CITY Forum Admins and/or authors of individual posts (Forum Admins and DoD/USSPACECOM for the analysis of satellite tracking data).
Two-line elements (TLE) and all other satellite data presented and distributed via this forum and e-mail lists of AUS-CITY are distributed with permission from DoD/USSTRATCOM.
Reprise Hosting
|
|
