Newtonian telescope cine focuser adapter

Why buy a motorized focuser accessory for astronomical amount of money when you can get high-quality wireless focus motor from the videomaking tech?

This was designed for Meade Poalris 127 (~155mm tube diameter) and 15mm rods. Specifically I use SmallRig MagicFIZ for this. It is awesome. It should probably work with Tilta Nucleus N, but the motor may be too weak, YMMV 

I've also adapted it for Skywatcher 150p crayford focuser.

I've attached two gear sizes made via https://www.thingiverse.com/thing:3897945 with 29mm inner diameter (print in TPU).

You need to print at least two adapter frames, each of them requires two m4 screws and two m4 nuts. Screw length may depend on your tubes size.

I've attached a couple of additional sizes and source files.

Printing tip: use PETG and more walls

Pros: you get very fine encoder-based control over your focus. Most astro focusers are controlled by in/out buttons (i hate it).

Cons: you can't connect it to astro software to use focus compensation or autofocus. Entry-level focusers struggle to lift 2" stuff. Geared connection always have some play.

---

This was designed before ZWO EAF became a de-facto standart. If you want to do astrophotography and can afford and control EAF, just go for it. But for visual, follow focus from video gear is still more comfortable IMO, because you have extremely smooth and sensitive control. Most astro focusers move at one-two fixed speeds by holding a button.

---

DONATE

ETH/Polygon: 0x7c888B61286Ea00E01e2b6979A2265588f7dfDaA

Trx: TFMuwm3zz5a5uDFUMei9tCUeUYCQNEuQTt