Celestron 8in Rowe-Ackermann Schmidt Astrograph OTA

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Celestron 8in Rowe-Ackermann Schmidt Astrograph OTA

8in Rowe-Ackermann Schmidt Astrograph (RASA 8)

  • Flat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor.
  • Unlike the larger RASAs that work with DSLR and large CCD cameras, the 8” model was designed with color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras in mind. The telescope does not work with standard DSLR cameras.
  • NEW Ultra-Stable Focus System – precision linear ball bearing virtually eliminates image shift.
  • Integrated air cooling system –12V DC MagLev fan reduces cool-down time and provides optimal air flow while filtering out dust.
  • Internal filter mount – seamlessly accommodates a Light Pollution Imaging Filter into the optical path.
  • CGE dovetail mounting rail.
  • Performs over a wider spectral range than most telescopes, from 390-800 nm, so more of the light passing through the astrograph is in sharp focus.


SKU: CEL-91073
OpticalDesign: Rowe-Ackermann Schmidt Astrograph(RASA)
Glass Elements:  
Aperture(mm): 200
Aperture(in): 7.9
FocalLength(mm): 400
FocalRatio: 2.0
DawesLimit(arc seconds): 0.58
RayleighLimit(arc seconds):: 0.69
LimMagnitude: 14.2
Central Obstruction(mm/%): 93/46
Spot Size(um) <4.6um RMS Over FOV
Back Focus(mm): 25 to 29
Wavelength Range(nm): 390-800
LightGrasp(>human eye): 816
Fastar(Hyperstar Available): NA
ImageCircle(mm): 22
Focuser: Ultra Stable
Dovetail Bar: CGE/Losmandy
Vented: Fan
MirrorLock: N/A
Dewshield: N/A
Finderscope: N
Case: N
Coatings: StarBright XLT
Weight(lbs/kg): 17/7.7
MaxMagnification: N/A
MinMagnification: N/A
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