Abstract
The basic design and an analysis of the performance possibilities
of a 25 m class optical telescope are presented here. The
configuration consists of a 28 m segmented spherical primary M1
followed by three highly aspherical corrective mirrors M2, M3 and
M4 which also deviate from cartesian shape. The construction is
axially folded. The combination M1-M2 forms a focus in a coupling
aperture in M4, and the combination M3-M4 relays this focus to the
final focus behind M1 and M3. The combination M2-M3 images M1 on
the segmented M4 to be used for correction of wavefront errors
induced by M1 due to gravitational sag and windbuffeting. Several
types of aspherical figuring of M2, M3 and M4 all resulting in a
field performance better than characterized by a RMS spotradius
smaller than 0.1 arcseconds within a full FOV of 21 arcminutes are
presented.
| Original language | English |
|---|---|
| Title of host publication | Optical Telescopes of Today and Tomorrow: Following in the direction of Today and Tomorrow |
| Place of Publication | Bellingham, Washington, USA |
| Publisher | SPIE - The International Society for Optical Engineering |
| Publication date | 1996 |
| Pages | 607-612 |
| Publication status | Published - 1996 |
| Event | Optical Telescopes of Today and Tomorrow: Following in the Direction of Tycho Brahe - Landskrona/Hven, Sweden Duration: 29 May 1996 → 2 Jun 1996 |
Conference
| Conference | Optical Telescopes of Today and Tomorrow |
|---|---|
| Country/Territory | Sweden |
| City | Landskrona/Hven |
| Period | 29/05/1996 → 02/06/1996 |