-
Adapter ESATTO 3,5" LP for telescopes with SC thread
This PrimaLuceLab adapter provides a secure, direct-thread connection between the ESATTO 3.5" LP robotic focuser and telescopes equipped with a standard Schmidt-Cassegrain (SC) rear cell. It is engineered to maintain a minimal profile, preserving precious back focus for your camera and other accessories in the imaging train.
Secure, Low-Profile Connection for ESATTO 3.5" LP Focuser
For serious astrophotography, a rigid, threaded connection is non-negotiable. This adapter replaces standard visual backs or compression fittings with a solid metal thread, creating a flex-free interface between your telescope and the high-payload ESATTO 3.5" LP focuser. Its low-profile design consumes minimal back focus, which is critical when assembling complex imaging trains with filter wheels, off-axis guiders, and rotators.
Standard SC vs. Large-Format SC Adapters: A Compatibility Guide
Choosing the correct adapter is essential for proper fit. This model is designed for the standard 2-inch Schmidt-Cassegrain thread common on many Celestron (8", 9.25" non-EdgeHD) and Meade SCTs. It is not compatible with the larger rear cell threads found on bigger telescopes.
-
This Adapter (Standard SC): Fits the common SC thread found on a wide range of SCTs, typically 8" and 9.25" models.
-
Large-Format Adapter (Sold Separately): Required for larger Celestron SCT (11" and 14") and EdgeHD (9.25", 11", 14") models, which feature a larger-diameter rear cell thread.
-
Which telescopes is the PrimaLuceLab ESATTO 3.5" LP SC adapter compatible with?
This adapter is designed for telescopes that use the standard 2-inch Schmidt-Cassegrain (SC) thread on their rear cell. This includes a wide variety of SCTs, but not those with larger, non-standard threads.
I have a Celestron 8" SCT. Is this the correct adapter for the ESATTO 3.5" LP focuser?
Yes. The Celestron 8" SCT uses the standard SC thread, making this the correct adapter to securely mount your ESATTO 3.5" LP robotic focuser.
How much back focus does this ESATTO 3.5" LP SC adapter use?
This is a low-profile adapter designed to add minimal optical thickness to your imaging train. This helps conserve the maximum possible back focus for your camera and other accessories like filter wheels or off-axis guiders.
Will this adapter work with my Celestron EdgeHD 1100?
No. The Celestron EdgeHD 1100 features a large-format rear cell thread. You will need the specific PrimaLuceLab adapter designed for the larger thread used on the 11" and 14" SCT and larger EdgeHD models.
What is the difference between this adapter and the one for larger SCTs?
The only difference is the telescope-side thread. This adapter fits the smaller, standard SC thread, while the other adapter (sold separately) is machined to fit the large-format thread found exclusively on larger Celestron SCT and EdgeHD telescopes.
Do I need any special software to use the ESATTO focuser once it's connected with this adapter?
The adapter itself requires no software. The ESATTO focuser it connects to is controlled by PrimaLuceLab's unified PLAY software or through standard ASCOM drivers, which are available for download from the manufacturer's website.
-
-
-
PrimaLuceLab 1-Year Warranty
