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 | 2 | 3 | (show all)
davidh1979
member


Reged: 04/28/13

new Cge Pro or LX-850
      #5829908 - 04/29/13 10:54 AM

i nearly have the money my head is telling me go for
the safe bet with the new cge pro it is now a great mount
with all the new improvements or go with the lx-850 which
is really starting to sound like a good mount but we all
know the horror stories from meade.


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

Reged: 01/07/05

Loc: NE Ohio
Re: new Cge Pro or LX-850 new [Re: davidh1979]
      #5829936 - 04/29/13 11:12 AM

Quote:

i nearly have the money my head is telling me go for
the safe bet with the new cge pro it is now a great mount
with all the new improvements or go with the lx-850 which
is really starting to sound like a good mount but we all
know the horror stories from meade.




The new LX850 is looking extremely attractive! Take a look at what a fellow CNer captured on his first night out with it: link.
Scroll two posts down from his photo to read jrcrilly's comments on the mount.


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

Reged: 07/06/07

Re: new Cge Pro or LX-850 new [Re: DaveJ]
      #5829996 - 04/29/13 11:53 AM

Why not wait a couple of months? See what transpires.

Post Extras: Print Post   Remind Me!   Notify Moderator  
davidh1979
member


Reged: 04/28/13

Re: new Cge Pro or LX-850 new [Re: rmollise]
      #5830018 - 04/29/13 12:06 PM

Quote:

Why not wait a couple of months? See what transpires.




well the cge pro now with +/- 3.4 arc second unguided
seems to have me i will wait a month or two to see
if the lx-850 can beat it.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Whichwayisnorth
Pooh-Bah
*****

Reged: 07/04/11

Loc: Southern California
Re: new Cge Pro or LX-850 new [Re: davidh1979]
      #5830485 - 04/29/13 03:14 PM

I used to have a CGE-PRO and really miss it. Very solid and dependable. Newer ones have very low native PE and both axis have spring loaded lapped worm gears. The mount features mature software and drivers. Also there are many accessories for it. As I've said many times the ONLY negative thing I ever had to say about the CGE-PRO was that it didn't have internal cable routing. However that isn't a big issue for many folks. Lots of creative ways to route cables so they don't snag. Some people take issue with how tall the mount is. As a tall person I never minded it at all. Much easier to view objects at the Zenith. One last thing is the motors and gears. I found them to be really quiet. I think the CGE-PRO with the forthcoming Starsense addon and using the All Star Polar Align routine will get you to an accurate polar alignment and pointing alignment and that is half the battle.

Whatever choice you make keep in mind "initial quality" vs. "5 year". Like an automobile review that gives a car high marks for initial quality you have to go back after a few years and re-review them to see how they hold up. We know how the CGE-PRO holds up, what about its competition?


Post Extras: Print Post   Remind Me!   Notify Moderator  
gavinm
Carpal Tunnel


Reged: 08/26/05

Loc: Auckland New Zealand
Re: new Cge Pro or LX-850 new [Re: Whichwayisnorth]
      #5830621 - 04/29/13 04:10 PM

Be an early adopter and go for the EQ8

Post Extras: Print Post   Remind Me!   Notify Moderator  
end
sage


Reged: 08/31/11

Loc: Houston, Texas, USA
Re: new Cge Pro or LX-850 new [Re: gavinm]
      #5830982 - 04/29/13 07:51 PM

Quote:

Be an early adopter and go for the EQ8




If I were to do it over again, I would probably wait to see if the EQ8 lives up to the early specs. The idea of have dual encoders at that price point sounds really nice. Unfortunately this will probably require a good deal of patience to see how it plays out. On the other hand it would also allow a better data set on the LX850 to be gathered.


Post Extras: Print Post   Remind Me!   Notify Moderator  
wolfman_4_ever
Pooh-Bah


Reged: 07/15/11

Loc: El Segundo, Ca, So. Cal
Re: new Cge Pro or LX-850 new [Re: end]
      #5831013 - 04/29/13 08:10 PM

Don't know if you can take the eq8 apart for less weight but the eq8 mount head is almost 63 lbs.. The tripod and pier is 68lbs putting it over the weight of the cge-pro...

I'm just putting that out there... everyone always complains about the pier height and weight of the pro..

You can get an RA encoder for the pro.. I have heard a Dec encoder is in the works.. who knows..

Not sure about the eq8 encoders.. anyone have info.. seems vague.. They talk about PEC on the mount with encoders, but with encoders, there is almost no PE.. Are those encoders just for accurate mount location?


Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: wolfman_4_ever]
      #5831078 - 04/29/13 08:46 PM

And note that the EQ8 dual encoders are not at all comparable to those in the 10Micron, AP, ASA mounts.

The EQ8 dual encoders are solely for pointing, they are pretty low resolution.

Having used an encoder-equipped GoTo mount (my AP600 + a Littlefoot GoTo controller) I'd say that the ability to declutch, move the mount around by hand and not lose GoTo sync - is a gimmick. Sounds good in theory, but in practice the utility is rather limited.


Post Extras: Print Post   Remind Me!   Notify Moderator  
wolfman_4_ever
Pooh-Bah


Reged: 07/15/11

Loc: El Segundo, Ca, So. Cal
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831240 - 04/29/13 10:24 PM

Thanks for the clarification. I was thinking they were just positioning encoders.

Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: wolfman_4_ever]
      #5831301 - 04/29/13 10:57 PM

hi Dave, yes they are for positioning. Am not sure if they are even absolute - even low-resolution absolute encoders are useful for homing.

Post Extras: Print Post   Remind Me!   Notify Moderator  
end
sage


Reged: 08/31/11

Loc: Houston, Texas, USA
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831311 - 04/29/13 11:09 PM

Quote:

And note that the EQ8 dual encoders are not at all comparable to those in the 10Micron, AP, ASA mounts.

The EQ8 dual encoders are solely for pointing, they are pretty low resolution.

Having used an encoder-equipped GoTo mount (my AP600 + a Littlefoot GoTo controller) I'd say that the ability to declutch, move the mount around by hand and not lose GoTo sync - is a gimmick. Sounds good in theory, but in practice the utility is rather limited.




Is this "known" information already? The only thing I had heard was that there would be encoders on the mount, not any specifications of any kind.


Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: end]
      #5831440 - 04/30/13 12:57 AM

It's a "best guess" on my part, knowing how much high-precision encoders cost.

Quote from the EQ8 site: "Patented dual-encoder technology for perfect harmony between manual handling and automated Synscan driven operation, never losing the position"

Notice that they don't talk about the encoders giving unguided tracking. Seeing as high-precision encoders cost a lot of money, I don't see how Synta could put them in at this price point.

Also the tick count of the encoders on the Az-EQ6 is known to be quite low (about 6000 ticks/rev) and it seems to be that since both are using Synscan, they would have similar or identical encoder specs.

http://www.astroshop.com.au/guides/sky-watcher-azeq6gt.asp



Post Extras: Print Post   Remind Me!   Notify Moderator  
gavinm
Carpal Tunnel


Reged: 08/26/05

Loc: Auckland New Zealand
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831465 - 04/30/13 01:16 AM

Just found this...some details on the encoders

http://ca.skywatcher.com/_english/02_mounts/02_detail.php?sid=66

I am planning to buy one as soon as they are available.. someones gotta be first..


Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: gavinm]
      #5831492 - 04/30/13 02:03 AM

no info there on the encoder spec.

what surprises me is that they managed to patent this "freedom find?"

gemini 1 has had that capability for years.


Post Extras: Print Post   Remind Me!   Notify Moderator  
jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831498 - 04/30/13 02:13 AM

Quote:

no info there on the encoder spec.

what surprises me is that they managed to patent this "freedom find?"

gemini 1 has had that capability for years.




Hard to tell what they actually patented, if anything. Ad copy isn't very reliable about things like that. ServoCat has also used the technology for years.

They describe the encoders as being used for pointing so medium resolution (4K) is predictable. If they had spent hundreds (at least) more to provide tracking assistance they'd be sure to mention it!


Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: jrcrilly]
      #5831503 - 04/30/13 02:23 AM

Yup. The AZ-EQ6GT mentioned 6356-tick encoders.

Really weird number of ticks (usually optical encoders are 1024, 2048, 4096, 5000, 8192, or 10000 tick).

This leads me to believe that Synta is using magnetic encoders, similar to those on the Intelliscopes. Which are dirt-cheap; Agilent HEDS optical encoders are around $75 each but magnetic encoders are under $20.

Like I said, not really comparable to 10Micron, AP, or ASA mounts where each encoder is anywhere from $500 to $3000 and up.


Post Extras: Print Post   Remind Me!   Notify Moderator  
gavinm
Carpal Tunnel


Reged: 08/26/05

Loc: Auckland New Zealand
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831530 - 04/30/13 03:07 AM

Quote:

no info there on the encoder spec.

what surprises me is that they managed to patent this "freedom find?"

gemini 1 has had that capability for years.




In the appendix down the bottom they give the encoder resolution as 17,624 counts/rev (although I cant find any info on such an encoder in Google)

Edited by gavinm (04/30/13 03:11 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
orlyandico
Post Laureate
*****

Reged: 08/10/09

Loc: Singapore
Re: new Cge Pro or LX-850 new [Re: gavinm]
      #5831569 - 04/30/13 04:17 AM

Still way insufficient for tracking. So the original assertion that these are solely for pointing holds.

Post Extras: Print Post   Remind Me!   Notify Moderator  
gavinm
Carpal Tunnel


Reged: 08/26/05

Loc: Auckland New Zealand
Re: new Cge Pro or LX-850 new [Re: orlyandico]
      #5831572 - 04/30/13 04:30 AM

I agree

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | (show all)


Extra information
22 registered and 37 anonymous users are browsing this forum.

Moderator:  Dave M, richard7, bilgebay, iceblaze 

Print Thread

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


Thread views: 2717

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics