Omegon Apochromatic refractor Pro APO AP 80/500 ED Carbon OTA

Manufacturer's product description:

The optics

The Omegon ED apo refractor has outstanding optics, a thoroughly though-out design and high-quality mechanical components. This very special telescope provides astrophotographers, visual observers or nature watchers with a unique source of pleasure when observing starry skies or nature watching. Pin-sharp stars, right out to the edge of the field of view, can be just as taken for granted as the outstanding mechanical precision.

The apochromat doublet

TrueColor lens elements are built into the objective lens of Omegon ED apochromat doublets. The two element objective lens is constructed of a clever combination of OHARA FPL-53 and S-NBM51 glass. These are special types of ED glass with high and low refractive indices and superior light transmission characteristics. A particularly special feature is the use of S-NBM51 glass, which is usually employed in the optics of apochromatic fluorescence imaging microscopes. The benefit to you is that the optics provide a particularly sharp and high-contrast image!

You will be able to see subtle detail on planets, using a Schmidt-Cassegrain telescope for example.

Carbon Fibre Tube

This apochromat is well suitable to visual observing but was, in fact, developed especially for astrophotography. Use the advantages of a carbon fibre tube: it is particularly light and so even perfectly suitable for using on smaller mounts. The tube also offers a very high inherent stability and only minimal thermal expansion. These advantages are particularly useful for astrophotography, as the focus remains stable for the whole night. The dew shield is also carbon fibre and can be extended easily. In addition, the tube is lined with black felt.

The Focuser

The telescope is equipped with a Crayford style focuser. It belongs to a new generation of drawtubes, which are patent pending. Absolute precision and enormous load bearing capacity are the main advantages of this focuser. It can carry accessories of even up to 10kg in weight by the use of an additional locking screw. Even under the application of extreme force, the drawtube will not move even by a millimetre: Once you have found focus, it will not change, even if you move where the telescope points to in the sky.

A 1:11 reduction ratio provides you with fine adjustment when focusing, allowing even more precision than with most telescopes. Do you use a full format chip for astrophotography, or do you intend doing this in the future? Even with full format cameras, images of objects are recorded free of vignetting. The complete focuser is freely rotatable: loosen the locking screw and the unit can be rotated through a full 360°.

Carrying case included

The aluminium case provided is ideal for storing your valuable optics. Extremely robust, with carrying handles and metal fittings, it can withstand some shaking around with no problem. The interior features accurately cut out foam mouldings which keep the telescope tube in exactly the same condition as when you last stored it there.

The advantages in a nutshell:

• all optical surfaces multi-coated
• refined baffle system to prevent reflections
• very high contrast and pin-sharp star images
• light and robust: telescope tube made from carbon fibre
• carbon fibre dew shield lined with felt
• fine focusing: focuser with 1:11 reduction and protective cap

Features:

• doublet design ED-Apo with 80mm aperture and 500mm focal length
• 360° rotatable 2“ focuser
• extended length 46cm, retracted length 39cm
• OTA weight only 2.8 kg, total weight with case 6 kg
• case dimensions 56x20x32cm

It is not only important which telescope you buy, but also where you buy it.

We provide extra help:

• We are a leading telescope dealer and know these instruments like the back of our hands.
• We are always very happy to offer our assistance after your purchase, should you encounter any problems with your telescope’s setup or operation.
• Our ‘Telescope Basics’ booklet - an 80-page beginner's guide for our telescopes – is provided free of charge with every telescope we sell.

Our expert comment:

There are several options for installing a finder.

The easiest to use is extra tube ring clamps 16102

and set this finder shoe 19118 on it.

(Achim Mros)

Crescent Nebula NGC 6888 in the constellation of Cygnus, taken with an Omegon 80/500 apo by Thomas Schnur

Veil Nebula in the constellation of Cygnus, taken by Thomas Schnur with an Omegon 80/500 apo

The Great Orion Nebular taken with the Omegon Apo 80/500 from Carlos Malagon. Luminance: 32 x 60 seconds: 32 minutes, RGB: 8 x 30 seconds each channel: 12 minutes, Total exposure: 44 minutes. Matching finder-scope shoe optional (not included in delivery)

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