Omegon Telescope Pro Astrograph 203/800 OTA
Reflector. Objective lens diameter: 203 mm. Focal length: 800mm
Omegon f/4 astrograph - for unforgettable astronomy photos Which other type of telescope can be used to create a beautiful image with so little effort? With Omegon astrographs this is easier than with 'ordinary' telescopes. Why? The answer is obvious - because an aperture ratio of f/4 means a big light output and consequently shorter exposure times. Immerse yourself in the world of deep sky photography. Admire faint galaxies or details in hydrogen nebulae. The Omegon astrograph sets a new benchmark for your astronomy photos.
The advantages in a nutshell:
- f/4 astrograph - a telescope with ultra-fast aperture ratio for short exposures
- suitable to go on medium mountings due to its short overall length
- wide field of view for extended objects - approx. 24mm is illuminated
- 94% reflection parabolic main mirror for bright images
- large secondary mirror - good illumination for DSLR cameras
- robust 2" Crayford focuser with 1:10 reduction and 1.25" reducer
- faster cool-down for getting started observing quicker - main mirror fan
94% reflection f/4 main mirror
Astrographs are suitable for visual observing, but only show their full potential when used for astrophotography. Their f/4 aperture means they are among the 'fastest' Newtonian telescopes around, allowing you to take shorter exposure images. The secondary mirror and the parabolic BK7 main mirror are 94% reflective, providing brighter and higher contrast images. One can see a visible improvement when compared to a 'normal' mirror which is around 88% reflective.
No shadows, only light - large secondary mirror
Attach your DSLR camera or a modern CCD camera to the telescope and enjoy impressive illumination over a wide field of view. No shadowing is noticeable thanks to the particularly large secondary mirror (see also below). Observing with 2" wide-field eyepieces is now perfect.
Less mistakes - more fun with the photography
The particularly short OTA length and focal length means the telescope is compact - the astrograph is about 20% shorter as compared to an f/5 system. This means you can also use this OTA's excellent optics on a medium mount, saving yourself the expense and clumsiness of a heavier mount. Another advantage is that the astrograph is perfect for extended deep sky objects thanks to its shorter focal length. This system is also more tolerant of small tracking errors than a telescope with a longer focal length. You will achieve some astounding astrophotography with even just a little effort.
2" Crayford focuser with 1:10 fine focusing
The Omegon V-Power focuser provides precision focusing for all astronomical objects. The 1:10 reduction, sturdy ball-bearings and guide rail make the focuser stable and easy-to-use. Its optimized design means the focuser can safely carry cameras weighing up to 5 kilograms without any slipping.
- extremely precise operation - the ball bearings and stainless steel guide rail mean the focuser tube runs smoothly and precisely
- can carry heavy cameras and eyepieces - no slipping with up to 5kg loads
- 1:10 reduction means precise focusing, includes a focus scale
- anti-reflection baffles for high contrast
- 2" to 1.25" reducer
Get started observing faster - main mirror fan
Just a quiet, unobtrusive hum, but what an effect! - the built-in 12V fan means 50% faster cool-down of your main mirror. This allows your telescope to reach optimum image quality more rapidly, so you do not have to wait for so long.
Included in delivery and other important data:
- 8" astrograph OTA with 70mm secondary mirror
- secondary mirror marking for optical alignment
- tube clamps and 22cm Vixen-style prism rail
- 2", 35mm extension tube
- OTA length 710mm, OTA outer diameter 230mm
- 12V main mirror fan
Product ID | 73119 |
Brand | Omegon |
Warranty | 2 years |
EAN | 2400000036944 |
Optical design | reflector |
Optical scheme | Newtonian |
Optics material | BK-7 |
Optics coating | aluminum and silicon dioxide |
Objective lens diameter (aperture), mm | 203 |
Secondary mirror diameter, mm | 70 |
Focal length, mm | 800 |
Highest practical power, x | 400 |
Aperture ratio | f/4 |
Limiting stellar magnitude | 13.3 |
Optical tube material | steel |
Optical tube dimensions, mm | 230x710 |
Optical tube weight, kg | 8.6 |
User level | experienced users |
Observed object | deep-sky objects, planets of the Solar System |
Convenient diagrams that describe how to install additional accessories on refractors and catadioptric telescopes
Find out how to assemble a telescope on an example of the Levenhuk Skyline 90x900 EQ telescope
This short guide will help you avoid typical mistakes and learn more about telescope and mounting types
The basics of astronomical observations for beginners
In this article we have gathered answers to some of the most frequently asked questions about telescopes
How telescopes work?
You can actually perform observations from your balcony!
All about telescope sizes, types, magnification, and mounts
Learn how to set up and use the telescope properly
Astronomy in light-polluted skies. Find out what you can observe in the city
Read an interesting comprehensive article on telescopes for little astronomers
Celestial objects you can observe with telescopes of different apertures
Colored and vivid images of galaxies, planets and star clusters entrance everyone who is fascinated by boundless space
Find an interesting review on the history of the changes to a refracting telescope
To make the process of choosing a telescope easier, we will tell you about the characteristics of the most popular types of telescopes today
Learn everything you need to know about refractor telescopes to make the right choice