The ESATTO 4" → Officina Stellare ProRC / RiDK / RiFAst adapter (PrimaLuceLab, SKU: PL3600326 ) allows you to replace the factory focuser in Officina Stellare ProRC, RiDK and RiFAst telescopes with a precise, automated ESATTO 4" focuser. The collar uses the existing hole pattern of the rear tube plate, so installation does not require drilling or other mechanical modifications.

The most important features of the adapter

• dedicated fit to the rear cell of Officina Stellare ProRC, RiDK and RiFAst telescopes – plug-and-play assembly
• maintaining the nominal back-focus of the structure – compatibility with reducers, flatteners and filter wheels
• full internal diameter 86 mm – no vignetting for full frame sensors
• CNC milled body made of 6061-T6 aluminum, hard anodized - high stiffness and corrosion resistance
• blackened and grooved interior – effective reduction of reflections, better contrast

Set components

• ESATTO 4" flange adapter ↔ Officina Stellare ProRC / RiDK / RiFAst
• set of M6 mounting screws (stainless steel)

Technical parameters

• compatible telescopes: Officina Stellare ProRC, RiDK, RiFAst (all apertures)
• compatible extractor: ESATTO 4"
• optical adapter thickness: < 5 mm (maintains design back-focus)
• Inner diameter: 86 mm
• material: aluminum 6061-T6, anodized
• EAN: 8059020773878
• manufacturer: PrimaLuceLab – Italy

The PL3600326 adapter enables full integration of the ESATTO 4" focuser with high-end Officina Stellare astrographs, providing precise, remote focusing and the rigid, on-axis optical path required for professional astrophotography.