Officina Stellare RiFast 500/1900 SGA OTA

Description

Synthetic quartz glass mirror substrates power the Officina Stellare RiFast 500/1900 SGA OTA fast astrograph telescope optical tube assembly. Built in Italy for automated research setups, this 500mm (19.69 inches) aperture instrument features a 1900mm focal length, an ultra-fast f/3.8 focal ratio, 0.23 arcsecond Dawes resolving power, and a limiting visual magnitude of 16.2.

To completely bypass focal shifts under volatile outdoor temperature loops, the Officina Stellare RiFast 500/1900 SGA OTA pairs zero-expansion synthetic quartz optics with multi-element low-dispersion flattener lenses. Its open carbon truss incorporates machined clear anodized aerospace aluminum rings (SGA). Coated with 96% protected reflectance aluminum, this 76.00 kg RiFast 500 SGA astrograph delivers uncompromising mechanical rigidity across continuous deep-space survey grids.

Key Features of Officina Stellare RiFast 500/1900 SGA OTA

Designed for robotic tracking stations in extreme thermal environments, this RiFast 500 SGA astrograph optical tube assembly pairs synthetic quartz optics with anodized aluminum hardware. It provides fast f/3.8 optical speed, motorized secondary focusing, and active thermal extraction for long unattended imaging sessions.

• 500mm (19.69 inches) aperture, 1900mm focal length, and fast f/3.8 ratio
• Synthetic quartz mirror core with low-dispersion flattener corrector glass
• High-reflectivity 96% protected multi-layer aluminum matrix optical coatings
• Open carbon fiber truss framework with clear anodized aerospace aluminum rings
• Temperature-compensated electronic secondary mirror focus adjustment drive
• Fixed multi-point primary mirror support cell with rear axial lock brackets
• Dual heavy-duty Losmandy-style D-plate rails installed on top and bottom
• Built-in multi-fan secondary boundary layer thermal extraction system

Synthetic Quartz Optics & Sub-Aperture Corrector

The aspherical quartz primary mirror couples with an internal sub-aperture corrector cluster to yield pinpoint stellar resolution. With a 230mm secondary mirror obstruction (46.7% diameter, 21.81% area), this RiFast 500 astrograph OTA operates with exceptional clarity across magnifications from 71x to 1000x.

Motorized Focus Control & Active Airflow Management

Continuous astronomical data collection requires mechanisms that adapt to shifting nighttime ambient air. The RiFast 500 SGA OTA features an electronic secondary mirror focus drive that applies real-time temperature compensation. Concurrently, the integrated multi-fan extraction system sweeps turbulent boundary air away from optical glass surfaces within the 710mm by 1500mm framework.

• Electronic focus controller interface hub for automated robotic positioning
• Integrated boundary layer multi-fan extraction array for rapid thermal stabilization
• Pre-drilled chassis mounting points for auxiliary target tracker hardware

Officina Stellare RiFast 500 SGA Warranty

Manufactured in Italy, the Officina Stellare RiFast 500/1900 SGA OTA includes a 2-year limited warranty against manufacturing defects. The factory package contains the 500mm synthetic quartz optical tube assembly, clear anodized framework, electronic focus controller interface hub, multi-fan boundary layer extraction system, and protective fabric truss shroud blanket.