Palomar 200-inch Telescope:

• 2.57 arcsec/mm at the slit

• 0.468 arcsec/pixel for the red camera (CCD 21)

• 0.389 arcsec/pixel for the blue camera (CCD 23)

• 0.624 arcsec/pixel for the alternate blue camera (CCD 14)

• Red: 4700Å - 10000Å

• Blue:<3000Å - 7000Å

• Length: 128 arcsec

• Width: ½, 1, 1.5, 2, 4, 6, 8, 10 arcsec

• 8 slits each

• 15 arcsec, center-to-center

• Width:

  • 1.0 arcsec, glass (2 available)

  • 1.5 arcsec, quartz (2 available)

• Displacement ±10 mm from center

• Long slit: 2 arcsec by 120 arcsec, glass
  (For use when the multislit assembly is installed.)

• Blue Photometric Band: you may scale from an observed SNR=290 in a 30-second exposure on a B=9.9m standard star...
  this was with a 300 l/mm grating, 2" slit, airmass 1.09, and average conditions;
  equivalent to 3% total transmission/detection efficiency from top of atmosphere. (FOR CCD14; PLEASE NOTE that CCD23 is now the Blue side CCD. Sensitivity will be updated soon.

• Red Photometric Band: you may scale from an observed SNR=250 in a 30-second exposure on an R=9.2m standard star...
  this was with a 316 l/mm grating, 2" slit, airmass 1.09, and average conditions;
  equivalent to 3% total transmission/detection efficiency from top of atmosphere. (CCD 21)

• Linear polarization: 3200Å - 10000Å

• Circular polarization: 3800Å - 8500Å

• Single slit only

• Maximum slit length 35 arcsec

• Representative exposure:

  • Quasar V=18; 15 min at each of 4 position angles for 0.5% accuracy in P when smoothed to 20Å.

• Data reduction (off-line): See M. Cohen for VISTA-based program.

¹ Roman numeral refers to the order.