3" VISUAL BACK FOR ESATTO 3" & ARCO 3" PLL15 That is true also for

That is true also for apochromatic refractors where the chromatic aberration is generally only corrected for the visible light

5” LP low profile robotic microfocuser - main features:

temperature

ready to work in any temperature condition

3" VISUAL BACK FOR ESATTO 3" & ARCO 3" PLL15 That is true also forThis adapter allows to connect an accessory with a 3" nosepiece to the M81 thread of the Prima Luce Lab ESATTO 3" robotic focuser or ARCO 3" robotic rotator. It incorporates a compression brass ring that avoids scratching the accessory barrel. Three locking screws tightly secure any heavy 3" accessory. Optical thickness of the adapter is 12. 5mm. Specifications Material Aluminium Optical thickness 12. 5mm Thread on the focuser side Male M81 x 1 SKU