8” Rowe-Ackermann Schmidt Astrograph

₹192,905.00 excl. 18% GST

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 cooldown 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.

Available on backorder

OPTICAL TUBE INFO:
Optical Design	Rowe-Ackermann Schmidt Astrograph
Aperture	203mm (8″)
Focal Length	400mm (15.74″)
Focal Ratio	f/2.0
Central obstruction diameter	93mm (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 Circle	22mm (.86″) Ø, 3.15°
Useable field	32mm (1.26″) Ø, 4.6°, only minimal performance loss at edge of FOV
Wavelength range	390 – 800 nm
Spot size	< 4.6 μm RMS across image circle
Optical Coatings	StarBright XLT
Off-axis Illumination	93% at 11mm (.43″) off-axis
Optical Window	46mm (1.81″) Ø
Back focus with included camera adapter	25mm (.98″)
Back focus from top of threaded collar	29mm (1.14″)
Optical Tube	Aluminum
Optical Tube Length	628mm (24.7″) length \| 235mm (9.3″) diameter
Focuser	Ultra-Stable Focusing System
Finderscope	Not included
Optical Tube Weight	17 lbs (7.7 kg)
Other Features	Air-cooling system, integrated filter mount
Included items	M42 camera adapter, C-thread camera adapter, fan battery pack
Dovetail	CGE Dovetail Bar

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.