Adapter from M81 to M68 female for ESATTO 3 and ARCO 3 (PrimaLuceLab, SKU: PL3600289) PrimaLuceLab opinie

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The M81 → M68 (female) adapter for ESATTO 3" / ARCO 3" (PrimaLuceLab, SKU: PL3600289 ) enables the connection of accessories with an M68 × 1 male thread (e.g. flatteners, reducers, filter wheels) to an ESATTO 3" focuser or ARCO 3" rotator whose front thread has a diameter of M81 × 1 . The adapter provides an axial, rigid connection with minimal back-focus increment.

Key Features

• thread conversion: input M81 × 1 (ESATTO 3" / ARCO 3") → output M68 × 1 (female)
• optical length of only 7 mm – negligible impact on the back-focus budget
• full internal diameter 68mm – no vignetting for full frame sensors
• CNC milled 6061-T6 aluminum, hard anodized - lightweight, stiff and corrosion resistant
• blackened and grooved interior – effective reduction of reflections, better contrast

Set components

• adapter M81 → M68 (female)

Technical parameters

• input thread: M81 × 1 (female)
• output thread: M68 × 1 (female)
• optical length: 7 mm
• Inner diameter: 68 mm
• material: aluminum 6061-T6, black anodized
• compatibility: ESATTO 3" lift, ARCO 3" rotator, accessories with M68 × 1 thread
• EAN: 8059020773663
• manufacturer: PrimaLuceLab – Italy

The PL3600289 is the perfect accessory for astrophotographers who want to use the wide ESATTO 3" focuser or ARCO 3" rotator in combination with correctors and reducers working in the M68 standard, while maintaining full aperture and precise back-focus.