Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

The long-awaited conversion to CN 3.0 is imminent. Please see this thread for important information.

Equipment Discussions >> Reflectors

Pages: 1
cmcdaniel5
journeyman
*****

Reged: 07/23/09

Loc: Pasadena, Ca
How to mount encoders new
      #5710626 - 03/03/13 01:06 PM

I'm in the planning stages of building a dob structure for my 16" Swayze mirror. I’m thinking of going ultra light along the lines of the Obsession UC or Albert Highe's design. I want to have the ability to add digital setting circles but for the life of me can't see how the alt axis is going to work (Az is a no brainer). Anyone out there got a picture of how it’s done?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Dennis Steele
vendor
*****

Reged: 09/18/06

Loc: Palm Desert, CA.
Re: How to mount encoders new [Re: cmcdaniel5]
      #5710699 - 03/03/13 01:56 PM

Check out my website at dobstuff.com and look at the scopes and testimonials page. You'll note the alt bearings are made with a "center hole" -- this is where the encoders would be attached. I like to use the Sky Commander encoder installation kit for the pivots -- but there are other solutions as well. Dennis

Post Extras: Print Post   Remind Me!   Notify Moderator  
Achernar
Postmaster
*****

Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: How to mount encoders new [Re: cmcdaniel5]
      #5710996 - 03/03/13 04:59 PM

If the altitide bearings don't have a place where you can mount the encoder at the center of rotation, you can make a bracket, or have someone at a machine or welding shop make one for you.

Taras


Post Extras: Print Post   Remind Me!   Notify Moderator  
Dennis Steele
vendor
*****

Reged: 09/18/06

Loc: Palm Desert, CA.
Re: How to mount encoders new [Re: Achernar]
      #5711432 - 03/03/13 08:37 PM

Sure, anything that'll put the encoder into the center of the alt bearing "circle" will work fine.

Dennis


Post Extras: Print Post   Remind Me!   Notify Moderator  
cmcdaniel5
journeyman
*****

Reged: 07/23/09

Loc: Pasadena, Ca
Re: How to mount encoders new [Re: Dennis Steele]
      #5714384 - 03/05/13 12:41 PM

Thank you all for your responses. I see now that with an ultra light design one needs to have a bracket that extends from the rocker base to the where the center of the alt axis would be. This becomes the “virtual” location to place the alt encoder.

McD


Post Extras: Print Post   Remind Me!   Notify Moderator  
Tom and Beth
Post Laureate


Reged: 01/08/07

Loc: Tucson, AZ
Re: How to mount encoders new [Re: cmcdaniel5]
      #5714678 - 03/05/13 03:19 PM Attachment (8 downloads)

Or you can skip that part and use this

Works great on my 12.5 inch version.

Edited by Tom and Beth (03/05/13 03:20 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
cmcdaniel5
journeyman
*****

Reged: 07/23/09

Loc: Pasadena, Ca
Re: How to mount encoders [Re: Tom and Beth]
      #5715434 - 03/05/13 09:45 PM

Very cool. I've seen some folk use an iPad taped onto the OTA. Probably same mechanics in play.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
7 registered and 30 anonymous users are browsing this forum.

Moderator:  ausastronomer, Knuklhdastrnmr, Phillip Creed, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 433

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics