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

Equipment Discussions >> Mounts

Pages: 1
ontherivet
member


Reged: 12/29/11

Loc: The Republic of Boulder, CO
Mount "coasts" to stop new
      #5946842 - 06/29/13 04:13 PM

I have an Orion EQ-G (Atlas) and when I'm going through alignment stars and slewing about often in one direction the mount will continue to coast after I have stopped sending slew commands. I am an imager so once I've settled on a target this isn't an issue but I suspect that this "coasting" is telling something about either my balance or some other configuration aspect. I have so little time with clear skies that I haven't tried to diagnose. Any thoughts?

Edited by ontherivet (06/29/13 04:14 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
CA Stargazer
member


Reged: 01/27/12

Loc: Milpitas, California
Re: Mount "coasts" to stop new [Re: ontherivet]
      #5946883 - 06/29/13 04:54 PM

I saw what you describe on my old Sirius mount.
Would not have expected to see this on my new Atlas Pro AZ, but I did notice this last night on my second alignment star, minimized it my ending the alignment with up-arrow and right-arrow before proceeding to third star.
My best guess was some weird backlash pointing to that area of the sky (Dubhe)
Scope and cameras were very well balanced.


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

Reged: 07/06/07

Re: Mount "coasts" to stop new [Re: CA Stargazer]
      #5946920 - 06/29/13 05:16 PM

The only times I've seen this, it's either been an HC cable problem or wrongly entered backlash compensation values.

Post Extras: Print Post   Remind Me!   Notify Moderator  
ontherivet
member


Reged: 12/29/11

Loc: The Republic of Boulder, CO
Re: Mount "coasts" to stop new [Re: rmollise]
      #5947193 - 06/29/13 09:10 PM

thanks for the ideas. i never use the HC, everything I do is through EQMOD via game contoller through Alignmaster or Sky Safari. I've never entered any backlash comp into EQMOD. Should I? I'm using PHD to guide. Or is this really a non-issue as far as pointing accuracy and guiding are concerned?

Edited by ontherivet (06/29/13 09:15 PM)


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

Reged: 07/06/07

Re: Mount "coasts" to stop new [Re: ontherivet]
      #5947732 - 06/30/13 09:23 AM

In backlash, there's a delay before the mount start moving, not before it stops. As a troubleshooting measure, I'd see what the mount does with the HC.

Post Extras: Print Post   Remind Me!   Notify Moderator  
ontherivet
member


Reged: 12/29/11

Loc: The Republic of Boulder, CO
Re: Mount "coasts" to stop new [Re: rmollise]
      #5947782 - 06/30/13 09:56 AM

Will try the HC after I replace the MC board. I half-fried it and it only works with EQDIR. I have the new board in hand.

Which version of HC firmware these days? I've heard conflicting reports of the latest off the Skywatcher site (3.35) as being a problem and folks rolling back?

Thanks for the input.


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

Reged: 07/06/07

Re: Mount "coasts" to stop new [Re: ontherivet]
      #5947856 - 06/30/13 10:59 AM

I have not had the chance to try the new firmware under the stars, but, yes, I've heard the same things. I'd stick with whatever's presently loaded in your HC for testing purposes...

Post Extras: Print Post   Remind Me!   Notify Moderator  
Wmacky
Carpal Tunnel
*****

Reged: 11/24/07

Loc: Florida
Re: Mount "coasts" to stop [Re: rmollise]
      #5947926 - 06/30/13 12:06 PM

My mount appears to be doing this in one direction. It appears mechanical to me as the drift slows until it finally stops. However mines under very high magnification when centering a planets for imaging. This is with a CGE.

Edited by Wmacky (06/30/13 12:08 PM)


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


Extra information
7 registered and 28 anonymous users are browsing this forum.

Moderator:  Dave M, richard7, bilgebay 

Print Thread

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


Thread views: 338

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics