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TS-Optics RC 203 Pro OTA This 203 mm Ritchey–Chrétien uses hyperbolic primary and secondary mirrors with 1624 mm focal length at f/8. The all-reflective optical layout is intended for imaging and can also be used visually with suitable accessories.
Focusing and spacing A separate focuser moves the eyepiece or camera without focusing by shifting the primary mirror. Extension rings are used to accommodate different optical trains. The table labels backfocus from the focuser socket separately from any distance measured from the rear tube surface.
Tube and mounting This is the metal-tube configuration. Its published weight, secondary obstruction and mounting rails remain specific to this version; carbon and metal RC assemblies are not interchangeable specifications.
Manufacturer details Metal-tube 8-inch RC. 8.25 kg includes focuser, with an additional 500 g for extension tubes; carbon mass/rail configuration not substituted.
TS-Optics manufacturer documentation
Compatibility notes Metal-tube 8-inch RC. 8.25 kg includes focuser, with an additional 500 g for extension tubes; carbon mass/rail configuration not substituted.
Additional specifications Total obstruction by secondary 85 mm Connection thread M90x1 Dovetail bars 2x GP style, each with 395 mm length
Artikel-Nr.
46250
Technische Daten
Öffnung
203 mm / 8"
Backfokus
254 mm from the tube´s backside or 159 mm from the 2" receptacle of the focuser
Brennweite
1624 mm
Öffnungsverhältnis
f/8
Okularauszug
2" Monorail focuser
Vom Hersteller genannte Ausrüstung
8" f/8 RC Astrograph 2" Focuser with reduction from 2" to 1.25" 2x Dovetail - GP style M90 extension tubes for easy reaching of the focus
Herstellerteilenummer
TSRC8M
Modell
TS-Optics RC 203 Pro OTA
Optisches Design
True RC with a hyperbolic primary and secondary mirror.
Reflexionsgrad
94% enhanced reflectivity
Auflösung
0.58"
Tubusdurchmesser
230 mm
Tubuslänge
580 mm with focuser
Gewicht
8.25 kg with focuser, plus 500 g for extension tubes
Besondere Bestellnummern
Hersteller-Teilenummer (MPN)
TSRC8M
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TS-Optics RC 203 Pro OTA This 203 mm Ritchey–Chrétien uses hyperbolic primary and secondary mirrors with 1624 mm focal length at f/8. The all-reflective optical layout is intended for imaging and can also be used visually with suitable accessories.
Manufacturer model: TS-Optics RC 203 Pro OTA · Specifications checked against manufacturer data on 2026-11-04