Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.
GSO RC OTA 8" f/8 M-LRS
678.05 £ net price (non-EU countries)
Anatolii Livashevskyi
Product Manager
/ 
+48721808900
+48721808900
+48721808900
[email protected]
Description
GSO Ritchey-Chretien 8" f/8 Optical Tube Assembly (OTA) for Astrophotography
The GSO Ritchey-Chretien 8" f/8 Optical Tube Assembly is a premier choice for astrophotographers seeking precision and quality in their observations. This optical tube employs a true Ritchey-Chretien (RC) system, acclaimed for its exceptional ability to correct optical aberrations like coma and astigmatism. Utilizing a pair of hyperbolic mirrors, the RC design ensures your astrophotography is free from these common distortions and devoid of chromatic aberrations, as it operates without any correctors or lenses.
Invented by the visionary minds of George Ritchey and Henri Chrétien, the Ritchey-Chretien system was specifically crafted for capturing celestial images. Their innovative approach eliminated coma, a prevalent issue in many telescopes, through the use of hyperbolic mirrors. This mirror-based design avoids the chromatic aberrations typical in catadioptric systems, making it a top choice for serious astrophotographers.
Key Features:
- Optimal Combination of Aperture, Quality, Weight, and Price: The hyperbolic mirror system provides high resolution without chromatic aberration or coma, all within a lightweight and affordable package.
- Swift Cooling Time: The open design of the RC tube allows it to cool approximately twice as fast as closed systems like Maksutov and SCT tubes of similar aperture.
- Resistance to Dew Formation: Unlike catadioptric tubes and refractor lenses, the absence of a meniscus in the RC tube significantly reduces dew condensation on the optics.
- High Contrast: The tube's interior features numerous baffles (diaphragms) and a matte black coating to eliminate stray light and glare, enhancing image contrast.
Technical Specifications:
- Optical system: Ritchey-Chretien
- Mirror diameter: 200 mm
- Focal length: 1600 mm
- Aperture ratio: f/8
- Tube weight: 8405 g
- Extension weight: 535 g (including 3 pieces)
- Optical tube length: 46.5 cm without focuser / 58 cm with focuser
- Length with extensions: 68 cm / 73.5 cm with maximum extension
- Outer tube diameter at the front: 23 cm
Equipment Included:
- 2x dovetail mounts: 1 x Vixen-style, 1 x Losmandy-style
- Crayford 2" / 1.25" focuser with 10:1 microfocus, including a 5 cm extension tube and graduated markings
- Front and back tube caps
- Focuser extensions: 2 x 2.5 cm optical length, 1 x 5 cm optical length, 77.5 mm clearance
- Tube finder adapter: Compatible with SkyWatcher / Vixen standards
Data sheet
Official permits of the Ministry of Development and Technology
Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.