Radio2Space AP 55/200 55FL F3.6 PLUS ESATTO OTA

Description

Canon fluorite crystal CaF2 optics power the Radio2Space AP 55/200 55FL F3.6 PLUS ESATTO OTA apochromatic refractor telescope optical tube assembly. Designed in Italy by PrimaLuceLab, this ultra-fast f/3.6 astrograph combines a 55mm (2.17 in) aperture with a 200mm focal length, delivering 2.11 arcseconds resolving power and reaching magnitude 10.5 for mobile wide-field astrophotography.

The Radio2Space AP 55/200 55FL F3.6 PLUS ESATTO OTA features a modified Petzval fluorite layout with fully multi-coated optics, providing a flat 44mm full-frame image circle. Integrated with an ESATTO 2-inch robotic microfocuser offering 0.04-micron stepper precision, this 1.85 kg (4.08 lbs) optical tube assembly incorporates CNC PLUS support rings and a Vixen/Losmandy dovetail plate, ensuring rigid thermal and mechanical stability during automated imaging runs.

Key Features of Radio2Space AP 55/200 55FL F3.6 PLUS ESATTO OTA

Engineered for fast traveling astrophotography and ultra-wide deep-sky surveys, this 55mm Radio2Space fluorite astrograph pairs Canon CaF2 optics with an integrated ESATTO robotic focuser. Its 44mm flat image circle delivers pinpoint star profiles across full-frame sensors without external flatteners.

• 55mm (2.17 in) clear aperture with 200mm focal length and ultra-fast f/3.6 optical speed
• Petzval apochromatic refractor optical design using Canon fluorite crystal (CaF2) glass
• Fully multi-coated anti-reflection optical surfaces with 0% central obstruction
• Corrected 44mm full-frame image circle with 60mm back focus from M57 thread
• ESATTO 2-inch robotic microfocuser with 0.04-micron per step motorized motion
• Ultra-compact lightweight chassis weighing only 1.85 kg (4.08 lbs)
• PLUS support rings and PLUS Vixen/Losmandy-compatible dovetail bar included

Canon Fluorite Petzval Optics & 44mm Full-Frame Field

The optical configuration employs an authentic Canon CaF2 fluorite element paired with an integrated Petzval lens grouping. This self-flattening optical layout eliminates chromatic fringing and off-axis field curvature across wide visual and photographic magnifications from 7.8x to 110x.

ESATTO 2-Inch Robotic Focuser & PLUS Mechanical Ring System

Remote automated imaging requires repeatable micron-level focal control. The Radio2Space AP 55/200 incorporates an ESATTO 2-inch robotic microfocuser with integrated electronics, eliminating drawtube slippage and backlash. Coupled with PrimaLuceLab PLUS aluminum support rings and a dual-standard dovetail bar, this lightweight astrograph maintains rigid mechanical alignment throughout long unattended exposures.

• ESATTO 2-inch robotic microfocuser with integrated motorized 0.04-micron stepping drive
• PLUS CNC-machined support rings and dual Vixen/Losmandy mounting plate
• Standard M57 rear camera interface with 60mm back focus spacing

Radio2Space 2-Year Limited Warranty

The Radio2Space AP 55/200 55FL F3.6 PLUS ESATTO OTA is manufactured in Italy by PrimaLuceLab and covered by a 2-year limited warranty against material and craftsmanship defects. The complete system package contains the 55FL f/3.6 optical tube assembly, ESATTO 2-inch robotic microfocuser, PLUS support rings, and a PLUS Vixen-style mounting plate.