1. Mirror Alignment Using Dual Beam Laser
Vinya Agluba
Smithsonian Astrophysical Observatory, Submillimeter Array
Research Supervisor: Rob Christensen
Home Institution: University of Hawaii - Manoa

2. Overview Antenna Optics Layout Importance of Mirror Alignment
Aligning the Mirrors
Conclusion

3. Antenna Optics Layout
Figure 1

4. Antenna Optics Layout
Figure 2

5. Importance of Mirror Alignment
Achieve Maximum Efficiency
Align Mirrors
Reduce Losses
-due to: beam truncation, distortion at focusing mirrors, and absorption and reflection at windows and mirrors
230GHz –
345GHz –
690GHz – 0.4

6. Aligning the Mirrors
Figure 3

7. Aligning the Mirrors M5 M4
170mm
Figure 4

8. Problem - Solution
Figure 5

9. Problem - Solution
Figure 6

10. XAWTV

11. First Trial

12. First Trial
Elevation:
70°
20°
40°

13. DS9

14. Second Trial

15. Second Trial
Elevation:
65°
85°
55°
75°
35°
15°
25°
45°

16. Second Trial

17. Targets
170mm

18. Conclusion Align mirrors using dual beam laser
Use targets to ensure the 170mm height

19. Acknowledgments Rob Christensen & Ant Schinckel SMA Staff CfAO
University of Hawaii - Manoa
Funding provided through the Center for Adaptive Optics, a National Science Foundation Science and Technology Center (STC), AST