CELESTRON C8 Optical Telescope Tube Assembly (CGE Dovetail) 203/2032mm

SKU: 13062

GTIN: 50234102490

Category: Telescopes

In Stock
Ready for shipment: 0 - 1 business days (DE - int. shipments may differ)

€ 1.449,00

incl. 19% VAT (All Non-EU Countries tax-free or with a valid EU Vat. No.) , (Paket/Parcel)

8" Schmidt-Cassegrain optical tube assembly (OTA)
Features Celestron's premium patented
8" Schmidt-Cassegrain optical tube assembly (OTA)
Features Celestron's premium patented StarBright XLT optical coatings
2032 mm focal length (f/10)
Fastar compatible
Tube constructed of durable and lightweight aluminum
Includes: 25mm eyepiece (81x), 6x30 optical finderscope, star diagonal, 1.25” visual back, CGEM style dovetail bar
StarBright XLT optical coatings
2032 mm focal length (f/10)
Fastar compatible
Tube constructed of durable and lightweight aluminum
Includes: 25mm eyepiece (81x), 6x30 optical finderscope, star diagonal, 1.25” visual back, CGEM style dovetail bar
Made by Celestron, USA

Includes or respectively is compatible with the following Celestron Technologies:

pcs.

CELESTRON C8 Optical Tube Assembly (CGE Dovetail) 203/2032mm

8" Schmidt-Cassegrain optical tube assembly (OTA)
Features Celestron's premium patented
8" Schmidt-Cassegrain optical tube assembly (OTA)
Features Celestron's premium patented StarBright XLT optical coatings
2032 mm focal length (f/10)
Fastar compatible
Tube constructed of durable and lightweight aluminum
Includes: 25mm eyepiece (81x), 6x30 optical finderscope, star diagonal, 1.25” visual back, CGEM style dovetail bar
StarBright XLT optical coatings
2032 mm focal length (f/10)
Fastar compatible
Tube constructed of durable and lightweight aluminum
Includes: 25mm eyepiece (81x), 6x30 optical finderscope, star diagonal, 1.25” visual back, CGEM style dovetail bar
Made by Celestron, USA

Includes or respectively is compatible with the following Celestron Technologies:

Description

The Celestron C8-A is the direct (but much improved) descendent of Celestron’s revolutionary C8 that transformed the hobby of astronomy when it was unveiled in 1970. This rugged aluminum optical tube is only 17 inches long and weighs just 13 pounds, making it easy to transport and set up. But the views are much more impressive than what you’d expect from such a compact instrument. The tube offers 2032 mm of focal length and a focal ratio of f/10, with the added versatility of Fastar (see below).

It is equipped with Celestron’s patented StarBright® XLT optical coatings, which visibly increase contrast and light transmission for brighter deep space images and shorter exposure times. With StarBright XLT, you’ll be able to discern subtle details while viewing the Moon and planets as well as faint galaxies and nebulae.

The Celestron C8-A can be mounted on a multitude of computerized telescope mounts thanks to its CGEM style dovetail bar. This iconic optical tube provides the best balance of portability, handling ease, light gathering ability and price ever offered to the amateur astronomer.

Fastar Technology

In 1997, CCDs were making a name for themselves in the astrophotography world, quickly supplanting traditional film photography thanks to their speed and convenience. This was the year that Celestron joined forces with the Santa Barbara Instruments Group (SBIG) to produce Fastar, a revolutionary add-on to Celestron’s hugely popular Schmidt-Cassegrain (SCT) optical system.

With Fastar, the SCT’s secondary mirror can be removed and replaced with a field-flattening lens assembly (sold separately by third party manufacturers) so that a CCD camera can be used in the front of the telescope at the f/2 focus of the instrument’s primary mirror. The potential of the Fastar system is staggering: exposures are 25 times shorter than if the camera was placed at the instrument’s native f/10 focus. Imagers can capture galaxies and nebulae with exposures of just 30 seconds.

StarBright XLT coatings

StarBright XLT is Celestron’s revolutionary optical coating system. It consistently outperforms all other coatings in the commercial telescope market. There are three major components that make up our StarBright XLT high-transmission optical system design:

Unique enhanced multi-layer mirror coatings made from precise layers of aluminum, SiO2 (quartz), TiO2 (titanium dioxide), and SiO2 (silicon dioxide). Reflectivity is fairly flat across the spectrum, optimizing it for both imaging and visual observing.
Multi-layer anti-reflective coatings made from precise layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide). Hafnium—a rare element that costs nearly $2,000 per kilogram—gives us a wider band pass than the titanium used in competing coatings.
High-transmission water white glass is used instead of soda lime glass for the corrector lens. Water white glass transmits about 90.5% of light without anti-reflective coatings; that’s 3.5% better than uncoated soda lime glass. When water white glass is used in conjunction with StarBright XLT’s anti-reflective coatings, the average transmission reaches an astonishing 97.4.

These three components make StarBright XLT one of the finest coatings available.

Videos

Celestron C8 (deutsch)

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Mondaufnahmen mit dem Celestron c8

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Optical Tube Info
Optical Design	Schmidt-Cassegrain
Aperture	203.2mm (8")
Focal Length	2032mm (80")
Focal Ratio	f/10
Focal Length of Eyepiece 1	25mm (0.98")
Magnification of Eyepiece 1	81x
Finderscope	6x30
Star Diagonal	1.25" Star Diagonal
Optical Tube	Aluminum
Highest Useful Magnification	480x
Lowest Useful Magnification	29x
Limiting Stellar Magnitude	14
Resolution (Rayleigh)	0.69 arc seconds
Resolution (Dawes)	0.57 arc seconds
Light Gathering Power (Compared to human eye)	843x
Secondary Mirror Obstruction	64mm (2.5")
Secondary Mirror Obstruction by Diameter	31%
Secondary Mirror Obstruction by Area	9.77%
Optical Coatings	StarBright XLT
Optical Tube Length	432mm (17")
Optical Tube Diameter	238mm (9.37")
Optical Tube Weight	12.5 lbs (5.67 kg)
Dovetail	CGE Dovetail Bar