Celestron RASA 36 Rowe-Ackerman Schmidt Astrograph Telescope OTA

Brand: Celestron
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Celestron RASA 36 Rowe-Ackerman Schmidt Astrograph Telescope OTA

Brand: Celestron
SKU: 91077
$31,499.00

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Out of stock. For Availability Call 02 9518 7255 or email sales@bintel.com.au

The Rowe-Ackermann Schmidt Astrograph (Celestron RASA 36), is a cost-effective optical system for space surveillance, Space Situational Awareness (SSA), other scientific applications, and advanced wide field astroimaging. It offers unprecedented value in aperture, speed, field of view, and optical performance. The RASA design has a convenient external prime-focus image capture location with a flat focal plane, providing small spot sizes to the edge of a wide field. The result is images free of optical defects like field curvature, off-axis coma, and astigmatism.

The 36 cm aperture version is the largest RASA Celestron manufactures; it is the biggest and fastest (f/2.2) optical instrument of its kind available off-the-shelf. Unlike most telescopes, which only focus visible light (400-700 nm), the RASA 36 cm focuses an extended spectral range (400-900 nm), allowing a brighter signal to be detected by a camera sensor. The RASA 36 cm also features a redesigned focus system, which ensures easy and stable focusing.

RASA 36 c sample back-focus distance (77.5 mm) accommodates a wide variety of imaging sensors. A custom camera adapter can be added for a field of view up to 4.4 degrees.

Important freight requirement  RASA 36 is a professional-caliber, high-precision instrument. It is manufactured and aligned to an exacting standard to provide exceptional optical performance. The telescope has been packaged to ensure it retains alignment and resulting performance during transport.However, due to the weight, size, and known stresses of shipping via parcel service, Celestron has determined that the ideal transport is a palletized delivery via LTL truck freight. For all Australian deliveries, Celestron will ship via this method.

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

Celestron RASA 36 Rowe-Ackerman Schmidt Astrograph Telescope OTA

SKU: 91077
  • 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

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