ESATTO 2" Adapter for Large 3.3" SCT Threads

ESATTO 2" Adapter for Large 3.3" SCT Threads

Long description
This adapter allows you to connect the ESATTO 2" microfocuser to Celestron SCT telescopes with a large 3.3" rear thread, including EdgeHD 925, 1100 and 1400.
With an ultra-thin optical path of just 2mm, this accessory ensures an ideal 77mm backfocus for imaging systems using the EdgeHD 0.7x focal reducer.

Manufactured in precision-machined anodized aluminum, it guarantees perfect rigidity and optimal optical alignment. Ideal for critical imaging setups where backfocus must be controlled with sub-millimetric accuracy.

Technical specifications

• Telescope thread : 3.3" SCT (large)

• Output thread : ESATTO 2"

• Optical thickness : 2 mm

• Mechanical thickness : 12.2 mm

• Outer diameter : 90.5 mm

• Inner clear aperture : 62 mm

• Material : anodized aluminum

• Compatible telescopes : SCT/EdgeHD 925, 1100, 1400

• Works with EdgeHD 0.7x reducers

Additional information

• Compatible with all PrimaLuceLab ESATTO 2" focusers

• Maintains the 77mm imaging backfocus required by EdgeHD

• Enables rigid and precise connection with minimal added path

• Not suitable for standard 2" SCT threads

ESATTO is the perfect microfocuser for SC and Aplanatic Schmidt-Cassegrain telescopes (like the Celestron EdgeHD). By adding the "Adapter ESATTO 2" for telescopes with large 3.3" SC thread", you can connect it to the large 3,3" thread in the back of the Celestron SCT (11" and 14") and EdgeHD (925, 1100, and 1400) models.

Since the ESATTO has a depth of 67mm and the 3.3” adapter has only 2mm of optical thickness, this leaves 77mm of backfocus for your camera and accessories, also when used together with the Celestron EdgeHD .7x focal reducers for 925, 1100 and 1400 models.

Dimensions of adapter ESATTO 2" for telescopes with large 3.3" SC thread. Optical thickness is 2mm.