Avantier's Ritchey-Chrétien telescopes are made with silicon carbide and aluminum, and are the latest high-performance model. The systems are athermal and lightweight, and provide stable imaging quality while minimizing launch cost and mass. The systems can be employed for scientific instrumentation, space-grade optical systems, and mission-critical imaging applications.
Avantier also offers customized solutions, tailored to customers' requests.
Ritchey-Chrétien Telescope. Image Credit: Avantier Inc.
Ritchey-Chrétien Telescopes
The RC telescope is an advanced reflecting telescope within the Cassegrain optical system, designed with hyperbolic primary and secondary mirrors. As its design helps to minimize optical errors such as coma and spherical aberration, the system is widely employed in aerospace optical systems, astronomical observatories, and advanced imaging platforms.
The Ritchey-Chrétien optical design provides a wider field of view and improves off-axis image quality. However, the system does not completely remove astigmatism and field curvature.
The systems have already been demonstrated on the Hubble Space Telescope and are thus ideal for astronomical observations. Ritchey-Chrétien telescopes can be difficult to produce, however, owing to the complex process and the high cost involved when compared to other designs. This is because RC telescopes require high precision to align the optical axes of the primary and secondary mirrors, and the manufacturing process for hyperbolic mirrors is also complex.
Despite these constraints, the ability of these mirrors to maintain image quality across different focal lengths and to remove chromatic aberration makes them a preferred option for applications requiring high image quality over a wide field of view, such as RC telescopes.
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Manufacturing Capability
Source: Avantier Inc.
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| Type |
Ritchey-Chrétien (Cassegrain Telescope) |
| Material |
Silicon carbide (SiC), Zerodur, ULE, and aluminum; primary and secondary mirrors coated with silver |
| Dimensions |
∅110 x 210.5 mm |
| Aperture Range |
Consumer-grade systems: Ø100–Ø200 mm, Research-grade systems: Up to Ø500 mm |
| Focal Length and Focal Ratio |
Focal Length: 760–1600 mm, F/# (Focal Ratio): F/5.6–F/8 |
| Interface |
1–32 UN, compatible with C-mount cameras, flange-to-image distance 17.5 mm |
| Spectral Coverage |
Operating wavelength range: Visible to near-infrared (VIS–NIR) |
- Silicon carbide and aluminum materials are available for secondary mirrors, primary mirrors, and optical metering structures, providing flexibility in launch orientations.
- An all-ceramic architecture built for simplicity and affordability delivers broadband, thermally stable performance that outperforms traditional refractive optics.
- Ideal for space-grade optics, combining high thermal stability, ultra-lightweight design, and long-term reliability
- Baseline specifications and a standardized architecture ensure consistent performance, while custom optical designs are available to meet tailored mission needs.
Customized Ritchey-Chrétien Telescope Solutions with a Trusted Manufacturer
A successful satellite telescope project should meet the customer’s schedule, performance goals, and budget. Avantier designs customized telescope systems for aerospace optical systems, scientific research, and other mission-critical imaging applications.
By working with customers’ systems engineers, including for spacecraft interface integration and sensor selection, Avantier develops improved final designs that precisely meet mission requirements.
Selecting a qualified Ritchey-Chrétien manufacturer is critical to ensuring the telescope delivers peak optical performance and long-term precision. A trusted partner integrates stringent quality control, skilled artisanship, and precision engineering to offer instruments that meet industry standards.
Beyond exceptional optics, partnering with the right manufacturer gives tailored customization and responsive support every step of the way, whether for aerospace optical systems, astrophotography, scientific research, educational programs, or advanced photonics applications.
Associating with Avantier provides customers with access to customized RC telescope systems developed for aerospace optical systems, astronomical research, and other mission-critical imaging applications that require reliability and high optical performance.