Celestron C9,25 SC XLT - 235/2350mm Schmidt Cassegrain OTA

C9OTA

in stock

1.413,00 EUR
incl. 19 % Tax
excl. 9,90 EUR Shipping costs

Description

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C9¼ Schmidt-Cassegrain / 235mm/2350mm / OTA

The C9¼ is more than just an interstage between the C8 and the C11. Compared with other Schmidt-Cassegrain systems, it offers more contrast and image definition thus making this telescope interesting especially for lunar and planetary observation. Celestron has designed this model with the those astronomers in mind who know the advantages of bigger apertures but who also like the sharpness and contrast close to a Maksutov-Cassegrain system.

Celestron has reached this target by a complete new design of the SC system. The C9¼ has nearly the same tube length than the C11. Nevertheless the focal ratio is also f/10. Main- and secondary mirror have a slower focal ratio and therefore not so extreme radii compared with the other short-tube systems. With the same precision of manufacturing, the image definition is better. Of course all C9¼ are individually manually retouched, like the other sizes.

Fields of use:
Lunar and planetary observation is a delight with this telescope. It closes the gap between normal SC telescopes and the heavy and expensive Maksutov systems with similar aperture. Deep Sky observations also benefit from the advantages of this telescope. Observe high-contrast objects like star clusters or planetary nebulae with the apertue of a reflector system and the sharpness close to a refractor!

Astro photography with the C9¼ is, of course, no problem either. Photos benefit from the same advantages as mentioned for visual observation. Focal reducers can be used with success and you also enjoy the extreme wide focus range of the internal main-mirror-focuser that allows the use of nearly any accessories like off-axis-guiders, filter wheels etc.

XLT coatings: Due to the multi layer anti-reflective coatings, Celestron telescopes have very high transmission values. Especially in the field around 500nm, up to 10% more light can pass. This is the field, where the human eye is very sensitive.

Technical details:
-- Aperture: 235mm
-- Focal length: 2350mm
-- Photographic speed: f/10
-- Schmidt Cassegrain optics with XLT coatings
-- Max. useful magnification: approx. 500x
-- Limiting visual magnitude: 14m5
-- Resolution: 0.52"
-- Diametral central obstruction: 34%
-- Tube length: 58cm
-- Tube diameter: 265mm
-- OTA weight: 9.4 kgs

Scope of delivery:
-- C9¼ optical tube assembly with GP-style prism rail
-- 6x30 viewfinder
-- Visual back with SC thread and reducer to 1¼"

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