Active support system of LAMOST reflecting Schmidt plate

Details Active support system of LAMOST reflecting Schmidt plate Active support system of LAMOST reflecting Schmidt plate

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4837..628c&link_type=abstract

Large Ground-based Telescopes. Edited by Oschmann, Jacobus M.; Stepp, Larry M. Proceedings of the SPIE, Volume 4837, pp. 628

Computer Science

Scientific paper

The reflecting Schmidt plate MA of LAMOST is with 5.7m × 4.4m reflecting area and consists of 24 segmented hexagonal sub-mirrors. Each sub-mirror is 25mm in thickness and 1.1m in diagonal. To correct the spherical aberration of the primary mirror, during observation, the aspherical shape of MA should be changed in every 1.5 minutes. To achieve the good image during observation, the active support system of MA will not only create the correct off-axis aspherical shape on each sub-mirror, but also maintain the co-focus for all 24 sub-mirrors. This paper presents the studying design with finite element analysis and experiments on the active support system of MA, including its axial and lateral supports, force actuators, optimization of the stiffness of the force actuator, sub-mirror cell, the mirror support structure etc. There are 30 force actuators and three position actuators, which support each sub-mirror and connected by sub-mirror cell. Total 24 sub-mirror cells located on the top of the MA main support structure. All force actuators work as both active and passive supports for each sub-mirror. It showed that the support system is complex but should work properly within the optical requirement.

Affiliated with

Also associated with

No associations

Rating

Active support system of LAMOST reflecting Schmidt plate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Active support system of LAMOST reflecting Schmidt plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active support system of LAMOST reflecting Schmidt plate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-914712