Celestron 36 cm RASA - Rowe-Ackermann Schmidt Astrograph

Celestron 36 cm RASA - Rowe-Ackermann Schmidt Astrograph

Name: Celestron 36 cm RASA - Rowe-Ackermann Schmidt Astrograph
Brand: Celestron
SKU: BP#822254
Price: 20995 EUR

Product.Nr.: BP#822254

EAN: 4047825037794

products condition: used

Manufacturer: Celestron

20.995,00 EUR
incl. 19 % VAT

excl. shipping costs

Nicht auf Lager

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product description

V2
14-inch f/2.2
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
Camera is NOT included!

The Celestron Rowe-Ackermann Schmidt Astrograph (RASA), 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 cm’s ample 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.

Technical Data

Optical Design	Rowe-Ackermann Schmidt
Aperture	355.6mm (14")
Focal Length	790mm (31.1")
Focal Ratio	f/2.2
Image circle	60.1mm (2.36") Ø, 4.4°
Backfocus from front lens assembly	77.5mm (3.05")
Backfocus from included camera adapters	55mm (2.16")
Central obstruction diameter	158mm (6.22")(44% of aperture diameter)
Resolution (Rayleigh)	0.39 arc seconds
Resolution (Dawes)	0.36 arc seconds
Light Gathering Power (Compared to human eye)	2581X
Optical Coatings	Enhanced aluminum, XLT multi-coatings used throughout
Wavelength range	400 – 900 nm
Spot size	< 6.3 μm RMS across FOV
Optical window	104mm (4.09") Ø
Finderscope	Not included
Ventilation fan	yes
Dovetail mounting bar	2x 3" Losmandy-style
Optical Tube	Aluminum
Optical Tube Length	1079.5mm (42.5")
Optical Tube Diameter	406.4mm (16")
Total Telescope Kit Weight	75 lbs (34.02 kg)
Included items	14-inch optical tube assembly, 48mm (1.89") camera adapter, fan battery pack

DSLR-Camera is not included.

Credits: Celestron, Baader Planetarium GmbH & photographers.

Celestron 36 cm RASA - Rowe-Ackermann Schmidt Astrograph

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