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Celestron 36 cm RASA Rowe-Ackermann Schmidt Astrograph OTA - 91077

SKU: CEL-91077

Regularly stocked item that is on order with the manufacturer and on its way to our warehouse. Expected to arrive within 5-10 business days.

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Celestron 36 cm RASA Rowe-Ackermann Schmidt Astrograph OTA



  • This advanced f/2.2 optical system with 36 cm aperture is optimally suited for professional use when both a wide field of view and high resolution are required, such as for space surveillance and other scientific operations.
  • An excellent choice for advanced astrophotography, this 36 cm RASA (Rowe-Ackermann Schmidt Astrograph) consists of a four element lens group that uses extra-low dispersion (ED) glass for images with no false color, coma, or field curvature.
  • With a 60 mm optimized image circle, pinpoint stars are retained to the far reaches of the largest sensors available.
  • Extended spectral range benefits from 700-900 nm range sensor response for improved signal detection.
  • Focusing system has been redesigned to minimize focus shifting as well as other undesired movement of the primary mirror for easier and more stable focus.




Optimally suited for scientific applications such as space surveillance and Space Situational Awareness (SSA), as well as for advanced wide field astrophotography, this Rowe-Ackermann Schnmidt Astrograph is also practical from a cost perspective. This optical system provides fantastic value in terms of speed, aperture, field of view, and overall optical performance. The RASA design features a convenient external location with a flat focal plane for prime-focus image capture, allowing small spot sizes to the outskirts of a wide field resulting in images void of optical blemishes such as field curvature, off-axis coma, and astigmatism.



The 36 cm aperture version is the largest RASA Celestron manufactures. It is both 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 36 cm RASA also features a redesigned focus system, which ensures easy and stable focusing.



With a substantial 77.5 mm back-focus, the Celestron 36 cm RASA is compatible with a wide range of imaging sensors. The addition of a custom camera adapter enhances the field of view up to 4.4 degrees.



Celestron 36 cm RASA Additional Features



  • Consisting of high transmission multi-coatings for lenses, along with highly reflective aluminum coatings, Celestron's proprietary XLT coatings enable reliably solid optical system light throughput.
  • A built-in cooling fan helps cool down optics to ambient temperature while pulling air through micromesh vents for dust ingress prevention.
  • Comes with dual dovetail mounting bars for the ability to mount both an optical tube and additional accessories. Compatible with "CGE/Losmandy" style dovetails.
  • A pair of 2x threaded insert hole sets in the rear cell allow even more mounting options.
  • Rear cell features carrying handles for convenient optical tube movement.
  • Although not normally needed, there are three sets of push-pull screws to adjust the lens group to achieve optical alignment for the entire system.
  • M48 camera adapter included.
  • Motor system specifically designed for the 36 cm RASA focuser is manufactured by Starlight Instruments.
Description
Description

Celestron 36 cm RASA Rowe-Ackermann Schmidt Astrograph OTA

  • This advanced f/2.2 optical system with 36 cm aperture is optimally suited for professional use when both a wide field of view and high resolution are required, such as for space surveillance and other scientific operations.
  • An excellent choice for advanced astrophotography, this 36 cm RASA (Rowe-Ackermann Schmidt Astrograph) consists of a four element lens group that uses extra-low dispersion (ED) glass for images with no false color, coma, or field curvature.
  • With a 60 mm optimized image circle, pinpoint stars are retained to the far reaches of the largest sensors available.
  • Extended spectral range benefits from 700-900 nm range sensor response for improved signal detection.
  • Focusing system has been redesigned to minimize focus shifting as well as other undesired movement of the primary mirror for easier and more stable focus.


Optimally suited for scientific applications such as space surveillance and Space Situational Awareness (SSA), as well as for advanced wide field astrophotography, this Rowe-Ackermann Schnmidt Astrograph is also practical from a cost perspective. This optical system provides fantastic value in terms of speed, aperture, field of view, and overall optical performance. The RASA design features a convenient external location with a flat focal plane for prime-focus image capture, allowing small spot sizes to the outskirts of a wide field resulting in images void of optical blemishes such as field curvature, off-axis coma, and astigmatism.

The 36 cm aperture version is the largest RASA Celestron manufactures. It is both 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 36 cm RASA also features a redesigned focus system, which ensures easy and stable focusing.

With a substantial 77.5 mm back-focus, the Celestron 36 cm RASA is compatible with a wide range of imaging sensors. The addition of a custom camera adapter enhances the field of view up to 4.4 degrees.

Celestron 36 cm RASA Additional Features

  • Consisting of high transmission multi-coatings for lenses, along with highly reflective aluminum coatings, Celestron's proprietary XLT coatings enable reliably solid optical system light throughput.
  • A built-in cooling fan helps cool down optics to ambient temperature while pulling air through micromesh vents for dust ingress prevention.
  • Comes with dual dovetail mounting bars for the ability to mount both an optical tube and additional accessories. Compatible with "CGE/Losmandy" style dovetails.
  • A pair of 2x threaded insert hole sets in the rear cell allow even more mounting options.
  • Rear cell features carrying handles for convenient optical tube movement.
  • Although not normally needed, there are three sets of push-pull screws to adjust the lens group to achieve optical alignment for the entire system.
  • M48 camera adapter included.
  • Motor system specifically designed for the 36 cm RASA focuser is manufactured by Starlight Instruments.
Specifications
Specifications
Model Number 91077
Telescope Aperture 355.6mm (14")
Telescope Series Celestron RASA
Telescope Mount Type No Mount - OTA Only
Type of Electronics OTA Only - No Electronics
Optical Design Rowe-Ackermann
Focal Length (mm) 790
Focal Ratio f/2.2
Optical Coatings Enhanced Aluminum XLT Multi-Coatings
Image Circle 60.1 mm; 4.4º
Light-Gathering Power Compared to Human Eye 2581x
Telescope OTA Outside Diameter (in.) 16
Telescope OTA Length (in.) 42.5
Telescope OTA Weight (lb.) 75
Warranty Two (2) Years
What's in the Box?
What's in the Box?
  • Celestron 36 cm (14") Rowe-Ackermann RASA Astrograph OTA
  • 48 mm Camera Adapter
  • Fan Battery Pack
  • Dual Dovetail Mounting Bars
  • Celestron 36 cm RASA Astrograph Optical Tube
  • Celestron 14" Rowe-Ackermann Schmidt-Astrograph OTA
  • Celestron 360 mm RASA OTA
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