Author Topic: DIY Dobsonian Tracking Advice  (Read 71 times)

anficonco

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DIY Dobsonian Tracking Advice
« on: December 27, 2017, 03:09:44 PM »
Greetings fellow stargazers! Please allow a humble noobie to seek your guidance. I have scoured the Web searching for a way to turn my Dob into a GoTo/tracking scope and I'm just not finding all the advice I need. I've been shooting photos of the Moon and sky for a while now, but so far I've been limited to adapting mirror lenses to my DSLR with less than satisfactory results. Just this week I bought a Coulter Odyssey 1 telescope (the red version with the crap focuser) for $200. I would like to use it for deep sky astrophotography. I realize this is a tall order, especially is Los Angeles, but even if I can only get some descent images of Saturn I'll be OK with that.

From my research I understand that I need to turn my scope's mount into a tracking mount that can hold a very precise position for at least ten minutes. I've seen websites describe the accuracy as greater than0.000478 degrees (http://www.codeproje...-Telescope-Part) and that's probably what I need. I know I will need to stack images - no problem as I am an experienced photographer and Photoshopper. I know I want GoTo capabilities and I have notebook computers I can use for that.

This thread was very helpful:
http://www.cloudynig...th-a-dobsonian/
But I'm really looking for specific examples of people that have automated their Dob and how they did it. I'm a pretty good fabricator,so I'm not afraid of building what needs to be built be it structural or electronic. On the other hand, I'm not so good with programming, so if I have to build an Arduino controller I might need some assistance with the code. I do not know where to get proper motors (stepper or otherwise), worm gears (if they're what I should be looking into), and what focuser I should be looking into to replace the crap one the Coulter came with. I'm really not interested in too much off the shelf stuff - I would like to build it myself if I can, not only to save money but also for the satisfaction of the ATM.

Essentially, has anyone done this and how? Links to blogs or previous Cloudy Nights threads are all welcome, and thank you for your kind responses!