Omegon Ritchey-Chretien Pro RC 355/2845 Truss OTA: detailed overview

Omegon Ritchey-Chretien Pro RC 355/2845 Truss OTA is ritchey-Chrétien telescopes are designed for high-resolution imaging of smaller deep-sky targets. Their hyperbolic mirrors reduce coma, making RC systems especially attractive for galaxies and planetary nebulae. Key product data include Type: Reflektor; Design: Ritchey-Chretien; Öffnung (mm): 355. The important point is not a single specification on its own, but the way optics, mechanics and intended use work together.

The relatively long focal length requires a stable mount, careful guiding and accurate collimation. In return, the design provides a specialised system with a high image scale. This makes it easier to choose the product for a real observing or imaging task rather than simply chasing the highest specification.

Who is it for?

• Experienced deep-sky astrophotographers
• Galaxies and planetary nebulae
• Observatory and robust portable setups

Technical features from the product data

• Type: Reflektor
• Design: Ritchey-Chretien
• Öffnung (mm): 355
• Brennweite (mm): 2845
• Auflösungsvermögen (Bogensekunden): 0,32
• Grenzgrösse (mag): 15,25
• Lichtsammelvermögen (-fach einer 7mm Pupille): 2571
• Max. sinnvolle Vergroesserung (-fach): 700
• Tubusgewicht (kg): 28,3
• Tubuslänge (mm): 990

Practical use, selection and system planning

At long focal lengths, small guiding and collimation errors become visible quickly. Mount capacity and mechanical rigidity matter more than optical-tube weight alone. When building the complete setup, also consider existing connections, weight, working distances and equipment you already own. A clean mechanical system is easier to use and simpler to expand later.

Our recommendation

Choose accessories and upgrades for the actual application rather than theoretical maximum values. A well-matched system is usually more capable and more pleasant to use than a combination where components only just fit together.

Related products and alternatives

If you would like to compare alternatives or related equipment, these products are worth a look: Omegon Ritchey-Chretien Teleskop Pro RC 304/2432 Truss OTA  ·  Omegon Ritchey-Chretien Telescope Pro RC 406/3250 Truss  ·  Omegon Pro RC 254/2000 Ritchey-Chrétien OTA