Abstract
This paper considers the problem of forming a preset surface of a segmented mirror of a telescope. An iteration algorithm based on analysis of the interference pattern of the radiation reflected from the mirror is used for phasing the mirror segments. At every iteration, the current interferogram is compared with the reference one obtained for the surface of a preset shape. The value of the control goal function, whose minimum is determined in the algorithm, decreases with the decreasing discrepancy between the interferograms. This technique provides for formation of a plane-reflecting surface of the mirror, if the relative displacement of segments does not exceed the half wavelength. It is shown that to extend the range of acceptable displacements, it is necessary to introduce additional sources of radiation of specially chosen wavelengths. In such a case, the dynamic range of the algorithm can be extended up to 30 μm.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | D.B. Calia, B.L. Ellerbroek, R. Ragazzoni |
| Pages | 1556-1563 |
| Number of pages | 8 |
| Volume | 5490 |
| Edition | PART 3 |
| DOIs | |
| Publication status | Published - 2004 |
| Event | Advancements in Adaptive Optics - Glasgow, United Kingdom Duration: 21 Jun 2004 → 25 Jun 2004 |
Other
| Other | Advancements in Adaptive Optics |
|---|---|
| Country | United Kingdom |
| City | Glasgow |
| Period | 21.6.04 → 25.6.04 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Algorithm for phasing a segmented mirror. / Kanev, F. Yu; Lukin, V. P.; Makenova, Nailya Altykhanovna.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / D.B. Calia; B.L. Ellerbroek; R. Ragazzoni. Vol. 5490 PART 3. ed. 2004. p. 1556-1563 185.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Algorithm for phasing a segmented mirror
AU - Kanev, F. Yu
AU - Lukin, V. P.
AU - Makenova, Nailya Altykhanovna
PY - 2004
Y1 - 2004
N2 - This paper considers the problem of forming a preset surface of a segmented mirror of a telescope. An iteration algorithm based on analysis of the interference pattern of the radiation reflected from the mirror is used for phasing the mirror segments. At every iteration, the current interferogram is compared with the reference one obtained for the surface of a preset shape. The value of the control goal function, whose minimum is determined in the algorithm, decreases with the decreasing discrepancy between the interferograms. This technique provides for formation of a plane-reflecting surface of the mirror, if the relative displacement of segments does not exceed the half wavelength. It is shown that to extend the range of acceptable displacements, it is necessary to introduce additional sources of radiation of specially chosen wavelengths. In such a case, the dynamic range of the algorithm can be extended up to 30 μm.
AB - This paper considers the problem of forming a preset surface of a segmented mirror of a telescope. An iteration algorithm based on analysis of the interference pattern of the radiation reflected from the mirror is used for phasing the mirror segments. At every iteration, the current interferogram is compared with the reference one obtained for the surface of a preset shape. The value of the control goal function, whose minimum is determined in the algorithm, decreases with the decreasing discrepancy between the interferograms. This technique provides for formation of a plane-reflecting surface of the mirror, if the relative displacement of segments does not exceed the half wavelength. It is shown that to extend the range of acceptable displacements, it is necessary to introduce additional sources of radiation of specially chosen wavelengths. In such a case, the dynamic range of the algorithm can be extended up to 30 μm.
UR - http://www.scopus.com/inward/record.url?scp=11144339343&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=11144339343&partnerID=8YFLogxK
U2 - 10.1117/12.552973
DO - 10.1117/12.552973
M3 - Conference contribution
AN - SCOPUS:11144339343
VL - 5490
SP - 1556
EP - 1563
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Calia, D.B.
A2 - Ellerbroek, B.L.
A2 - Ragazzoni, R.
ER -