36 CM Rowe-Ackermann Schmidt Astrograph (RASA 36)

₹1,601,613.00 excl. 18% GST

A breakthrough 36 cm aperture, f/2.2 optical system designed for professional applications that require both a wide field of view and resolution, such as space surveillance and other scientific applications
4-element lens group utilizes extra-low dispersion (ED) glass for images free of false color, coma, and field curvature, the Rowe-Ackermann Schmidt Astrograph (RASA) 36 cm is also an excellent choice for advanced astroimaging
60 mm optimized image circle maintains pinpoint stars to the far corners of the largest available sensors
Extended spectral range takes advantage of sensor response in the 700-900 nm range, allowing a brighter overall signal to be detected
Redesigned focusing system minimizes focus shifting or other unwanted motion of the primary mirror, enabling easy and stable focus

Available on backorder

OPTICAL TUBE INFO:
Optical Design	Rowe-Ackermann Schmidt Astrograph
Aperture	355.6mm (14″)
Focal Length	790mm (31.1″)
Focal Ratio	f/2.2
Central obstruction diameter	158mm (6.22″)(44% of aperture diameter)
Light Gathering Power (Compared to human eye)	2581X
Resolution (Rayleigh)	0.39 arc seconds
Resolution (Dawes)	0.36 arc seconds
Image circle	60.1mm (2.36″) Ø, 4.4°
Useable field	70mm (2.75″) Ø, 5.1°, only minimal performance loss at edge of FOV
Wavelength range	400 – 900 nm
Spot size	< 6.3 μm RMS across FOV
Optical coatings	Enhanced aluminum, XLT multi-coatings used throughout
Off-axis Illumination	83% at 30mm (1.18″) off-axis
Optical window	104mm (4.09″) Ø
Back focus with included camera adapter	55mm (2.16″)
Back focus from top of threaded collar	77.5mm (3.05″)
Optical Tube	Aluminum
Optical Tube Length	1079.5mm (42.5″)
Optical Tube Diameter	406.4mm (16″)
Focuser	New focuser design, minimizes focus shift
Finderscope	Not included
Optical Tube Weight	75 lbs (34.02 kg)
Other features	Ventilation fan, dual dovetail mounting bars
Included items	48mm (1.89″) camera adapter, fan battery pack