Development of large aperture cooled telescopes for the space infrared telescope for cosmology and astrophysics (SPICA) mission

2005 ◽  
Author(s):  
Takashi Onaka ◽  
Hidehiro Kaneda ◽  
Keigo Enya ◽  
Takao Nakagawa ◽  
Hiroshi Murakiami ◽  
...  
Keyword(s):  
Large Aperture ◽  
Infrared Telescope

Simulation and analysis of co-phasing errors of the segmented primary mirror tiled by hexagonal segments in LOT

2021 ◽  
Vol 21 (10) ◽  
pp. 245
Author(s):  
Shi-Dong Shen ◽  
Xiang-Qun Cui ◽  
Yong Zhang
Keyword(s):  
Normal Distribution ◽  
Strehl Ratio ◽  
Active Optics ◽  
Software Simulation ◽  
Primary Mirror ◽  
Large Aperture ◽  
Infrared Telescope ◽  
Out Of Plane ◽  
Solid Foundation ◽  
Simulation Results

Abstract In this paper, co-phasing errors of a segmented primary mirror tiled by hexagonal segments are successfully calculated for the 12-meter Large aperture Optical/infrared Telescope (LOT). Co-phasing errors including out-of-plane errors are simulated separately and comprehensively based on several software simulation platforms. PAOLA simulation results show that the Strehl Ratio (SR) of LOT is larger than 0.8 when the RMS value of tip-tilt obeying a normal distribution is less than 0.018 arcsec, and the SR of LOT is larger than 0.8 when the RMS value of piston obeying a normal distribution is less than 40 nm. Besides, simulation results of Zemax show that the SR of LOT is larger than 0.8 when the RMS value of tip-tilt obeying a normal distribution is less than 0.02 arcsec, and the SR of LOT is larger than 0.8 when the RMS value of piston obeying a normal distribution is less than 40 nm. These simulation results successfully lay a solid foundation for LOT (especially the segmented primary mirror with active optics).

FIRBE: New Japanese Balloon-Borne Infrared Telescope

2002 ◽  
Vol 4 ◽  
pp. 407-407
Author(s):  
H. Shibai ◽  
S. Arimura ◽  
T. Teshima ◽  
Y. Doi ◽  
T. Nakagawa ◽  
...  
Keyword(s):  
Infrared Telescope

Large-aperture deformable mirror correction of tiled-grating wavefront error

2006 ◽  
Vol 133 ◽  
pp. 645-648 ◽  
Author(s):  
B. E. Kruschwitz ◽  
R. Jungquist ◽  
J. Qiao ◽  
S. Abbey ◽  
S. E. Dean ◽  
...  
Keyword(s):  
Deformable Mirror ◽  
Large Aperture ◽  
Wavefront Error

Proposals for the ISS: «BIT» Experiment On-board infrared telescope

2000 ◽  
Vol 6 (4) ◽  
pp. 62-63
Author(s):  
L.M. Shulman ◽  
Y.A. Melenevsky
Keyword(s):  
Infrared Telescope

Theoretical and Experimental Studies of Large-Aperture Rectenna Arrays

1998 ◽  
Vol 52 (6) ◽  
pp. 87-92
Author(s):  
A. I. Luchaninov ◽  
Viktoriya M. Shokalo ◽  
A. A. Konovaltsev ◽  
A. M. Rybalko ◽  
A. A. Shcherbina
Keyword(s):  
Experimental Studies ◽  
Large Aperture
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