• Browse our Quick Start Guide for setup and your first time out

  • Read the full User Manual to explore deeper

  • Follow the Build Guide to assemble your kit or parts

  • Join our Discord server to chat with developers and users of the PiFinder in real-time

  • Your question may be answered below in our Frequently Asked Questions

  • Use the form below for personal help or with any questions you have!

PiFinder Resources

Whether you’ve just opened your assembled PiFinder or you’re working on building your own, we are here to help. Check the links here to find what you need or scroll down and send us an email for a personal reply.


Which PiFinder is right for my scope?

All of them — there's only one. The rev4 converts between configurations in seconds, with no tools:

  • Left/Right — for scopes with the focuser out the side (most dobs/Newtonians), the screen faces the focuser while the camera looks up the tube. Switching between left and right takes seconds.

  • Straight — for refractors, SCTs and other rear-focuser scopes, the PiFinder mounts on top. In straight mode the screen sits at a 45° back/up angle for comfortable viewing on taller scopes. Change scopes — or share one PiFinder across several — and reconfigure on the spot.

Frequently Asked Questions


How does the PiFinder mount on a scope?

The PiFinder comes set up with a dovetail for mounting which fits into a shoe attached to your telescope. The dovetail is 32mm wide and fits the standard finder shoe found on most scopes. This system allows quick installation and removal of a finder and helps to maintain alignment between observing sessions. If you don’t have a shoe already on your scope, they are widely available and generally easy to add.

Here’s a closeup photo of the shoe and the mounted PiFinder.

If you have questions about mounting a PiFinder to your specific scope, please use the form below and we’ll work with you to explore options!


PiFinder Rev4 Pre-Orders

  • When will my pre-order ship? — First units ship early August, then ~5 working days.

  • What's the commemorative faceplate offer? — The first 50 pre-orders each include one of three commemorative designs, assigned as a surprise.

  • I own a v3 (or v2) — is it obsolete? — Never. The software is universal; every PiFinder ever made keeps getting every update.

  • What about the battery? — Built in, standard, over 9 hours; charge while operating from any USB-C source.

  • EU / UK availability? — Coming soon.

  • Can I return it? — 30 days, any reason, prepaid label; 1-year warranty.

  • Do you still sell kits? — Yes! The v2.5 DIY kit line continues as always, and a new kit with some rev4 features is coming toward the end of the year.

How much does the PiFinder Weigh?
What size is the PiFinder?

The PiFinder weighs about 390g / 13.75 oz with internal battery. For reference, that is significantly less than a 9x50 RACI finder or a TeleVue Delos eyepiece.

The main body of the PiFinder is 11 × 8.5 × 4cm (4.25 × 3.5 × 1.5 inches). Depending on the orientation, the PiFinder can be up to 14cm (6 inches) tall and up to 11cm (4 inches) deep. The camera sits approximately 4cm (1.5 inches) from the bottom of the dovetail.

If you have any questions, we’re here to help!



Still have questions?

We’re here to help! Use the form below and we’ll get back to you as soon as we can. Usually within one business day.

Contact Us!