2012 Fiscal Year Final Research Report
Accurate and Fast Tomographic Wavefront Reconstruction for NextGeneration Multi Object Adaptive Optics System
| Project/Area Number |
23740140
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | 光学赤外線天文学 / 観測装置開発 |
|---|
| Research Abstract |
In order to realize simultaneous adaptive optics (AO) corrections for multiple objects in wide field view of next generation large ground based telescopes, we examined new methods of tomographic wavefront reconstruction. We found a new algorithm, which uses measurements from previous time step as additional information, can significantly improve the accuracy of the tomographic estimation and significantly widen the available field of view. For faster tomographic estimation with parallel processing with GPGPU, it is suggested that the necessary speed can be achieved by changing the initial guess for the conjugate gradient method used in the tomographic reconstruction and by increasing the number of parallel processing.
|
