Kstars/Ekos Focus Introduction

Introduction and general overview of Astrophotography focusing using Kstars/Ekos.
00:00 Introduction
03:54 Framing
06:28 Camera & Filter Wheel Properties
10:55 Basic Autofocus Run
18:00 Settings Parameters
20:20 Full Field vs Sub Frame
26:20 Process Parameters
36:43 Mechanics Parameters
39:44 Critical Focus Zone
50:30 Focus Advisor

[@user-eh8wn7yu4n]

Very nice. Love the in depth discussion of all the selections/options, the theory and why or how to think about them or use them. Super helpful. It would be nice to have one of these for every module.

[@TommyLimKW]

We areally need this kind of tutorial. Kudos to John.

[@guntergeorgi1347]

Hi John, maybe you can point me to an answer. I need to reset the step position to zero or a particular value. Btw I use an ASI EAF with 600,000 max steps by firmware update. I Reality I have 253,000 steps. But anyway, how can I set the actual counter to I.e. 250,000 when the focuser has reached his max position? Which of the numerous values in the driver is the right one? Thank you in advance Gunter

[@johneevans1]

Hi guntergeorgi1347, its a while since I've done this but as I remember...
1. Move the focuser as far in as you want to go. In the Indi tab "sync" this to 0.
2. Move the focuser out as far as you want to go. The absolute position will tell you the step number. In the Indi tab set this number as Max Position.
Indi will then only allow the focuser to move between 0 and Max Position.