What is the purpose of the stop ring on the PrimaLuceLab M60 to T2 adapter?
The stop ring allows you to achieve precise rotational framing of your camera. You can thread your camera on, back it off to the perfect angle for your target, and then tighten the stop ring against the camera body to lock it securely in that orientation without any wobble.
Will this M60 to T2 adapter add significant backfocus to my ESATTO 2" LP setup?
No, the adapter is designed to be as low-profile as possible. With the stop ring attached, it adds a minimal, specified amount of optical thickness. If you remove the stop ring, the optical thickness becomes negligible, making it ideal for telescopes with very limited backfocus.
Is the M60 to T2 adapter compatible with the standard ESATTO 2" or only the ESATTO 2" LP model?
This adapter is designed specifically for the ESATTO 2" LP (Low Profile) focuser, which uses an M60x1 female thread on its drawtube. It is not compatible with the standard ESATTO 2" or 3" models, which use different thread sizes.
Should I choose this T2 adapter or the M48 version for my ZWO ASI533MC Pro camera and ESATTO 2" LP?
For a ZWO ASI533MC Pro camera, this T2 adapter is the correct choice. The ASI533MC Pro has a native M42x0.75 (T2) female thread on its front plate, so this adapter will connect to it directly and securely.
How do I use this adapter to frame a target like the Horsehead Nebula (Barnard 33) with my ESATTO 2" LP?
First, thread the adapter onto your ESATTO 2" LP. Next, thread your camera onto the adapter's T2 threads until it is snug. Loosen the stop ring, then rotate the entire camera body until the Horsehead Nebula is framed exactly as you want it on your screen. Finally, tighten the stop ring against your camera to lock the orientation.
Can I use this adapter to attach a DSLR with a T-ring to my ESATTO 2" LP?
Yes. A standard T-ring for a DSLR camera has a female T2 (M42x0.75) thread. You can thread the T-ring directly onto this adapter, allowing you to connect your DSLR body to the ESATTO 2" LP focuser.