PPT Slide
- Tunable Lyot Filter System
- 9-calcite wide-field elements in series.
- Hollow-core DC motor control - fully sealed chamber.
- Temperature calibrated.
- 0.2 arcsecond spatial resolution over range from 5100 -- 6600 A.
- 0.3 - 1 second temporal resolution for filtergrams; 0.1 second for Stokes images.
- Spectral resolution 60--100 mA.
- Polarization precision 0.1 - 1 %.
- FOV selectable via focal plane mask
- 320” x 160” wide FOV (some vignetting in corners) for filtergrams, dopplergrams, and longitudinal (Stokes V) magnetograms.
- 160” x 160” active region FOV.
- 80” x 160” narrow FOV for full Stokes vector mapping (I,Q,U,V) in 10 seconds.
- Common Focal plane with BFI
- 2048 x 4096 back illuminated frame transfer CCD, 0.08 arcsecond pixels.