Commercially Available CCD Cameras and their Application ...€¦ · Passive Optics Workshop Off...

Passive Optics Workshop

Commercially Available CCDCameras and their Application in

Passive Optical Aeronomy

Jeff BaumgardnerBoston University


Review of Some Relevant CCDParameters

• Quantum Efficiency (Q.E.)

• Dark Signal

• Read Noise

• Charge Transfer Efficiency (CTE)

• Well Depth

• Gain

• Frame or Interline Transfer


For 13 micronpixels


EMCCD Noise Characteristics(from ANDOR iXon Camera Data Sheet)


Typical CTE and Well Depth for13.5 Micron Pixel Size


Full Frame CCD


Frame Transfer CCD


Interline Transfer CCD


Interline Transfer with Microlens


CCD Camera Packaging andCooling Options

• Vacuum Dewar

• Back Filled with Dry Gas

• Peltier Cooling (Air or Water Circulation)

• Liquid Nitrogen

• Other (e.g. Cryotiger or Freon)


CCD Camera Packaging cont.

• Window(s) (Material, Coating, Size)• Shutter (Speed and Size)

– Vignetting Issues

• Computer Interface– Parallel– USB– PCI Card– Other


Choice of CCD Camera Dependson Type of Measurements

• Dayglow (High Signal, High Background)

• Nightglow Imaging (Moderate Signal)

• Auroral Imaging (High Signal, Short Exp.)

• High Dispersion Spectroscopy(Low Signal)

Passive Optics WorkshopFrom: Pallamraju Cedar Tutorial June 2003


S/N and Scene Brightnessfor F/1, 27 micron pixels, Dark=0.01 e/sec, and FA=8 Å


S/N for Bright Aurora


Off the Shelf CCD Cameras

• Finger Lakes Instrumentation (FLI)• Model CM-2

– 1024 x 1024 E2V CCD (CCD47-10)– 13 micron Pixels– Q.E. 84% @ 500nm– Dark Signal ~0.3 e/pix/sec @-20 deg.C– Read noise ~8 e (rms) @ 200kHz– Gain 1.9 e/dn– Water or Air Cooled Peltier, Dry Gas Backfill– USB Interface


FLI CM-1


FLI CM-1 Dimensions


FLI CM-1 Flat Fields

• 5577A 7774A


FLI CM-1Dark and Read Noise

Single 2 min dark 2 min dark - median average of 100 darks

S.D.=10 electrons


Off the Shelf CCD Cameras(cont.)

• Andor Technology• Model DW436N

– 2048 x 2048 (E2V CCD42-40)– 13.5 micron Pixels– Q.E. ~85% @500nm– Dark Signal ~0.002 e/pix/sec @-70 deg.C(water)– Read Noise ~3 electrons (rms) @ 31 kHz– Gain 0.7 e/dn (Gain can be changed)– Water or Air Cooled Peltier, Vacuum Head– PCI interface


ANDOR DW436N


Andor DW436N Dimensions


ANDOR DW436N Flat Fields

5577 A 7774 A


ANDOR DW436N Dark and ReadNoise

S.D. = 2.07 electrons2 Min Dark Binned 2 x 2


Off the Shelf CCD Cameras(cont.)

• PixelVision• Model: Spectra Video (Discontinued)

– 1024 x1024 (SiTe SIA 003AB)– 24 micron Pixels– Q.E. ~75% @700nm– Dark Signal ~ 0.6 e/pix @ -40 deg.C– Read Noise ~ 5 e (rms) @ 40 kHz– Gain ~ 1.9 e/dn– Water Cooled Peltier,Vacuum Head– PCI with Optical Cables


PixelVision SpectraVideo


PixelVision/SiTe Flat Field7774 A


PixelVision Dark and Read Noise

S.D. = 7.72 electrons2 min integration


Example of Flat Fielding Data

Commercially Available CCD Cameras and their Application ...€¦ · Passive Optics Workshop Off...

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