Re: [ap-gto] 1st day at NEAIC


Apr 7, 2016

 


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#72793 Apr 7, 2016

Hi Roland,

> Some highlights for the mount: encoder feedback from the shaft allows the axes

> to be close loop controlled to sub-arc sec levels. This counteracts wind loads on

> the scope and controls the position and motions of each axis to a very high

> precision, something that was only previously possible with direct drive mounts. In

> other words, you can push on the scope, as the wind would do, and the axis will

> push back to keep the scope pointing exactly where it was. This happens 100+

> times per second, and really enhances the stability of the system. It also allows

> very precise positioning to 1/10 arc sec levels of both axes. This is all done in the

> new CP4 using the Renishaw Absolute Encoders. /div>



That is really cool!



So is this CP4 feature limited to the 1600+encoders? (Or will the 1100+encoders do that too with the CP4?)

> Mounted on the 1600 is the 17 inch F8 Astrograph.



Nice! Is there a ballpark price for this yet?



-Ray Gralak

Author of APCC (Astro-Physics Command Center): www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc

Author of PEMPro: www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: www.gralak.com/apdriver

Author of PulseGuide: www.pulseguide.com

Author of Sigma: www.gralak.com/sigma

> -----Original Message-----

> From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]

> Sent: Thursday, April 7, 2016 2:19 PM

> To: ap-gto@yahoogroups.com; ap-ug@yahoogroups.com

> Subject: [ap-gto] 1st day at NEAIC

>

>

>

> Hi all,

>

> Well we set up the 1600 mount with our new 17 inch astrograph prototype for all to

> see. Lots of interest for this combination. We will have more extensive information

> for the scope as soon as we figure out how to use the hotel wifi setup.

>

> Some highlights for the mount: encoder feedback from the shaft allows the axes

> to be close loop controlled to sub-arc sec levels. This counteracts wind loads on

> the scope and controls the position and motions of each axis to a very high

> precision, something that was only previously possible with direct drive mounts. In

> other words, you can push on the scope, as the wind would do, and the axis will

> push back to keep the scope pointing exactly where it was. This happens 100+

> times per second, and really enhances the stability of the system. It also allows

> very precise positioning to 1/10 arc sec levels of both axes. This is all done in the

> new CP4 using the Renishaw Absolute Encoders. /div>

>

> We also show the new spring loaded gearbox with the ability to completely

> disengage the gearbox for precise balancing. The gearbox now has low wear

> worm gear and essentially no backlash in either axis. Tracking and guiding is now

> essentially perfect. For those who don't want to guide, the mount can be precisely

> modeled with APPC, a really sweet combination.

>

> Mounted on the 1600 is the 17 inch F8 Astrograph. This scope is lightweight so

> that it takes only one person to set it on the mount. I actually placed it on the mount

> with no help ( and I'm a lightweight ). This is the prototype that I have been using

> for the last 2 years in my observatory, and we plan to make them in production this

> year. Quartz optics, carbon fiber, focus and forget. No cool down problems, sharp

> 1/10 wave optics interferometry tested. It really works, covers a 3" flat field,

> produced the highest resolution I have ever experienced at our observatory, even

> with ou r mediocre skies in N-Illinois.

>

> Rolando

>

>

> Sent from AOL Mobile Mail

>

>



----------------------------

#72798 Apr 7, 2016

Hi Roland,

Any plan to make a small version (10" or 12") of that for Mach1 users ? ;-)

 -Kai

On Apr 7, 2016, at 14:19, chris1011@... [ap-gto] ap-gto@yahoogroups.com> wrote:



 Hi all,

Well we set up the 1600 mount with our new 17 inch astrograph prototype for all to see. Lots of interest for this combination. We will have more extensive information for the scope as soon as we figure out how to use the hotel wifi setup.

Some highlights for the mount:  encoder feedback from the shaft allows the axes to be close loop controlled to sub-arc sec levels. This counteracts wind loads on the scope and controls the position and motions of each axis to a very high precision, something that was only previously possible with direct drive mounts. In other words, you can push on the scope, as the wind would do, and the axis will push back to keep the scope pointing exactly where it was. This happens 100+ times per second, and really enhances the stability of the system. It also allows very precise positioning to 1/10 arc sec levels of both axes. This is all done in the new CP4 using the Renishaw Absolute Encoders.

We also show the new spring loaded gearbox with the ability to completely disengage the gearbox for precise balancing. The gearbox now has low wear worm gear and essentially no backlash in either axis. Tracking and guiding is now essentially perfect. For those who don't want to guide, the mount can be precisely modeled with APPC, a really sweet combination.

Mounted on the 1600 is the 17 inch F8 Astrograph. This scope is lightweight so that it takes only one person to set it on the mount. I actually placed it on the mount with no help ( and I'm a lightweight ). This is the prototype that I have been using for the last 2 years in my observatory, and we plan to make them in production this year. Quartz optics, carbon fiber, focus and forget. No cool down problems, sharp 1/10 wave optics interferometry tested. It really works, covers a 3" flat field, produced the highest resolution I have ever experienced at our observatory, even with our mediocre skies in N-Illinois.

Rolando

Sent from AOL Mobile Mail






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