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Debris finder, PolCor-2
An instrument to detect debris around young stars


  1. Introduction
  2. Exoplanets
  3. Stars dust disc
  4. Albanova, research center in Stockholm
  5. The instrument, PolCor-2
  6. The mechanical box's surfaces
  7. Coronagraph
  8. Mirror set one
  9. Filters
  10. Lyot Stop
  11. Servo motors
  12. Polarizer
  13. Parabolic and flat mirror set two
  14. Lucky Imaging
  15. The camera
  16. The computer
  17. Test of the instrument that has been done
  18. Conclusion
  19. End of demonstration
  20. Follow up with links of information about coronagraphs

9: Filters

Debris finder or planet hunter

Filter holder to the right.

Image above shows the filter holder in the system. This is activated when one wants to study the narrow wavelength ranges, 0.3 nm to 0.5 nm width. Some interesting resonance lines FeI 386 nm, CAII 393 nm, 589 nm Nal and KI 767 nm. Even the more normal filters U, B, V, R and I are available. The filter holder can be loaded with two filters at a time.

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