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Orion Optics UK Ltd OMC 140 Maksutov Cassegrain Telescope

P.O.A

Looking for something extra special, you have just found the best custom Cassegrain telescope on the market globally.

Exceptional resolution and sharpness hand crafted bespoke custom telescope for the most demanding and discerning astronomy enthusiasts.

Note: This is an Orion UK Ltd telescope, not to be confused with Orion, USA which are Chinese gear. These two names are similar but their products are totally different. Orion UK Ltd are a specialist bespoke supplier and hand craft some of the best telescopes that are available globally, their products feature simply exceptional quality optics, and are would renowned for superior optics - my own 1/10PV CF unit was purchased as I wanted something that optically directly compared to my 1970 Questar but with higher power in a larger aperture & a more attractive price.

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Why is the OMC140 so special? - and - Why has Orion UK Ltd built up such a renowned reputation over the last decade or so? . . . Quite simply it is always the same, quality, quality, quality - Orion UK Ltd make premier optical quality instruments, it is also mechanically excellent and stable and . . . Development, development and development, all done in conjunction with experienced amateurs and professional astronomers and two very experienced optics designers, Barry Pemberton and Harrie Rutten.

Price range circa $2.2-4k - dependant on version selected, availability 10 weeks nominally.

Details

Exceptional resolution and sharpness hand crafted bespoke custom telescope for the most demanding and discerning astronomy enthusiasts.

Note: This is an Orion UK Ltd telescope, not to be confused with Orion, USA which are Chinese gear. These two names are similar but their products are totally different. Orion UK Ltd are a specialist bespoke supplier and hand craft some of the best telescopes that are available globally, their products feature simply exceptional quality optics, and are would renowned for superior optics - my own 1/10PV CF unit was purchased as I wanted something that optically directly compared to my 1970 Questar but with higher power in a larger aperture & a more attractive price.

.

Why is the OMC140 so special? - and - Why has Orion UK Ltd built up such a renowned reputation over the last decade or so? . . . Quite simply it is always the same, quality, quality, quality - Orion UK Ltd make premier optical quality instruments, it is also mechanically excellent and stable and . . . Development, development and development, all done in conjunction with experienced amateurs and professional astronomers and two very experienced optics designers, Barry Pemberton and Harrie Rutten.

The OMC140 came into being as a challenge in achieving a wide field, photo visual Maksutov Cassegrain with incredible stability and versatility. The project was a success and we judge that by considering the large number of these compact instruments we have in use in every continent of the World.

Why is it so successful? The design is not a standard all spherical one with a main mirror the same size as the corrector. That is the traditional Maksutov design but, it lacks off axis performance and suffers from coma. The OMC140 has an ellipsoidal primary which is over 12mm larger in diameter than the Maksutov corrector. This added aspherisation of the primary allows much wider flatter fields to be achieved but it virtually eliminates coma.

The spot diagrams for the OMC140 are nothing less than spectacular and this illustrates a full sized 30mm field.

The carbon tube of the OMC140 allows almost perfect stability of focal length and strength. The unique cantilever focusing method ensures image shift/mirror flop are things of the past.

We guarantee the OMC140 will give less image shift than a just a few seconds of arc, it’s IS that good, really. Focusing is carried out by means of a spring loaded micrometer thimble, coupled to the internal mechanism to give the most precise and the smoothest focusing action you could think of. People often say their focuser is "as smooth as silk", this one really is, it’s like butter smooth.

What do you get in your image quality? The best image possible for the aperture. The OMC140, because of its relative compactness regularly gets compared with larger Maksutovs and refractors, some costing over 8 times the cost of the OMC-140.

We have not come across any refractor of the same aperture which outperforms it, if you know of one, please let us know. The OMC140 is offered in three optical grades, the standard model and the De-Luxe model with Lambda/ 6 optics, plus teh Ultra with Lambda/ 10 optics, a unique offerring globally.

What do other people think about the OMC140, well, we were asked to enter it in a Sky at Night Maksutov competition a few years ago where it competed with some ‘scopes costing significantly more and, one larger in aperture. We’ll leave the closing comment of the review to answer that question… "the OMC140 deserved first prize for its high-quality views not just of planets but also of deep-sky objects. In the end it was those memorable moments with the Orion Nebula and Saturn with this telescope that swung our view in its favour"

Specifications: OMC140

Aperture - 140mm

Primary Mirror Diameter - 150mm

Secondary Mirror Diameter - 44mm

Focusing Method - 100% zero image shift micrometer

Mirror Coating - Hilux on both mirrors

Tube Length - 450mm

Tube Material Standard Model - Carbon Fibre

Tube Material De-Luxe Model - Carbon Fibre

Focal Length - 2000mm

Focal Ratio - f14

Tube Weight - Exceptional 3.5kg

Optical Back - 31.7mm (2 inch available on application)

Mount Fixing - Standard Dovetail

Wavefront Optics Standard - 1/4PV

Wavefront Optics De-Luxe - 1/6PV (on application)

Wavefront Optics Ultra De-Luxe - 1/10PV (also on application)

* Note: Custom options available on request, please enquire for details.

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