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RASA 8"
판매가 가격문의
배송방식 일반배송
배송비 주문금액별 차등
(0원 ~ 3,500원)
관심상품

 

OPTICAL TUBE INFO:
Optical DesignRowe-Ackermann Schmidt Astrograph
Aperture203mm (8")
Focal Length400mm (15.74")
Focal Ratiof/2.0
Central obstruction diameter93mm (3.66") (46% of aperture diameter)
Light Gathering Power (Compared to human eye)843x
Resolution (Rayleigh)0.68 arc seconds
Resolution (Dawes)0.57 arc seconds
Image Circle22mm (.86") Ø, 3.15°
Useable field32mm (1.26") Ø, 4.6°, only minimal performance loss at edge of FOV
Wavelength range390 - 800 nm
Spot size< 4.6 μm RMS across image circle
Optical CoatingsStarBright XLT
Off-axis Illumination93% at 11mm (.43") off-axis
Optical Window46mm (1.81") Ø
Back focus with included camera adapter25mm (.98")
Back focus from top of threaded collar29mm (1.14")
Optical TubeAluminum
Optical Tube Length628mm (24.7") length | 235mm (9.3") diameter
FocuserUltra-Stable Focusing System
FinderscopeNot included
Optical Tube Weight17 lbs (7.7 kg)
Other FeaturesAir-cooling system, integrated filter mount
Included itemsM42 camera adapter, C-thread camera adapter, fan battery pack
DovetailCGE Dovetail Bar

 


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