CLOUDY NIGHTS FORUM ARCHIVES
"Live Forums" can be found here: Live Forums


Equipment Discussions >> Mounts

Pages: 1 | 2 | 3 | (show all)
charen
Pooh-Bah


Reged: 05/28/05
Posts: 1446
Loc: New Zealand
Vixen Polaris load capacity
      #2121352 - 01/15/08 01:31 AM

Hi ! could some one tell me what the load capacity of the original Japanese Vixen Polaris mount is ? This is the early 1980's type - prior to the GP or SP versions.
Is it equal to todays EQ3 / Skyview / Astroview versions or more in the CG-4 [?] or EQ-5 load capacity. I have the opportunity to buy one in excellent condition for my Orion ED100 [ visual use only ]. Thanks for any info.

[It would be great if there was a 'quick reference' chart with all the 'mount equivalents' / load capitities / recomended scope sizes etc. of the well know mounts - past and present - as it does seem this is a very common question - is there such a chart ? ]

--------------------
30 binos.
Celestron C8
Skywatcher Equinox ED120 / Goto HEQ5.


Post Extras: Print Post   Remind Me!   Notify Moderator  
RogerRZ
Whatta you lookin' at?


Reged: 01/09/06
Posts: 3082
Loc: West Collette, NB, Canada
Re: Vixen Polaris load capacity new [Re: charen]
      #2121491 - 01/15/08 05:12 AM

Depends on how long your scope is, but I wouldn't want to put much more than 10 pounds on it.

I once had a TV102 mounted on one, and it did't do wonders.

One of your 80mm scopes, or even your 4" Mak would be fine on it, though. It is a fine little mount, if you respect that it can't carry a lot of weight. I miss mine...

--------------------
-Roger Pitre-
1 X 7 binocular
MN65, Nexstar 8SE, SV70ED, Lunt 60 PT
EQ6 Pro, Canon 50D, Modified XSi, SBIG ST-2000XM, 70-200 f/4L, BackyardEOS

"He's got shoulders on him like a smelt..."--Anonymous

http://www.facebook.com/album.php?aid=10723&id=509325956&l=79d06a1d10

http://ajpobservatory.is-great.org/


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


Reged: 05/28/05
Posts: 1446
Loc: New Zealand
Re: Vixen Polaris load capacity new [Re: RogerRZ]
      #2121497 - 01/15/08 05:30 AM

Thanks for the info. One thing it is and that is very well made. The build quality and finish is excellent and both axis movements are ultra smooth. One improvement would be wooden legs as this has [ non original ? ] aluminium ones which detract from it. I will get it as it is above the current EQ3 Chinese type clones when it comes to quality.
With the ED80 [down size !] on top it will make a good 'quick look' scope.

--------------------
30 binos.
Celestron C8
Skywatcher Equinox ED120 / Goto HEQ5.


Post Extras: Print Post   Remind Me!   Notify Moderator  
RogerRZ
Whatta you lookin' at?


Reged: 01/09/06
Posts: 3082
Loc: West Collette, NB, Canada
Re: Vixen Polaris load capacity new [Re: charen]
      #2121499 - 01/15/08 05:37 AM

Quote:

With the ED80 [down size !] on top it will make a good 'quick look' scope.




It certainly will!

--------------------
-Roger Pitre-
1 X 7 binocular
MN65, Nexstar 8SE, SV70ED, Lunt 60 PT
EQ6 Pro, Canon 50D, Modified XSi, SBIG ST-2000XM, 70-200 f/4L, BackyardEOS

"He's got shoulders on him like a smelt..."--Anonymous

http://www.facebook.com/album.php?aid=10723&id=509325956&l=79d06a1d10

http://ajpobservatory.is-great.org/


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


Reged: 12/16/06
Posts: 357
Loc: Wake Village, Texas - East Tex...
Re: Vixen Polaris load capacity new [Re: RogerRZ]
      #2121945 - 01/15/08 11:25 AM

Nice mount. I bought the Celstron 6 inch f/5 on the Polaris mount back about 1984. The weak spot is the cast altitude adjusting bracket. Over time mine bent almost to the horizontal, and that was only with the weights that came with the 6 inch. Too bad, because the mount is very well made. So, do like Roger says and use small telescopes!

JohnG

--------------------
John Gerrald
Unitron Model 142
8 Inch f/7 Custom Assembled
8 Inch Celestron/Vixen f/5 Newtonian
6 inch Celestron/Vixen f/5 Newtonian
8 Inch f/2.9 Sky Research Newtonian
Celestron Polaris Equatorial Mount
Celestron Super Polaris Equatorial Mount
Celestron 11 x 80 Comet Hunter Binocuars
Bausch & Lomb 7 x 50 Binoculars
A few vintage eyepieces



Post Extras: Print Post   Remind Me!   Notify Moderator  
Jon Isaacs
Postmaster


Reged: 06/16/04
Posts: 32442
Loc: San Diego, California
Re: Vixen Polaris load capacity new [Re: charen]
      #2122180 - 01/15/08 01:17 PM

Quote:

Is it equal to todays EQ3 / Skyview / Astroview versions or more in the CG-4 [?] or EQ-5 load capacity. I have the opportunity to buy one in excellent condition for my Orion ED100 [ visual use only ].




Just a quick note: The EQ-3/Astroview is the same mount as the older CG-4. The new CG-4 has a much better tripod.

I think the drives are not so cheap for the Polaris but I had a friend who was using a Orion EQ-3 drive... But then I have heard the older EQ-3 mounts and the newer ones have a different gearing....

jon

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Rcade
scholastic sledgehammer


Reged: 09/04/04
Posts: 765
Loc: GA
Re: Vixen Polaris load capacity new [Re: Jon Isaacs]
      #2122951 - 01/15/08 06:55 PM

I really like my old Polaris and it is a fine well made and stable mount. I use it for my Nighthawk II and even with a hefty Nagler or a camera it is very stable. I would not go heavier than a 5" SCT or a short 4" refractor though. I would consider the Polaris as at least as stable as an EQ3.

--------------------
Clear Skies,
Rob Cade

Cave Astrola Deluxe 8" f8 (Achilles)
Stellarvue NH-II in Stardust Blue (Cleopatra)
Celestron C9.25 (Maltese Falcon)
Celestron C6R-GT (Criminal Intent)
Oberwerk 15x70
Vixen Polaris Mount

Clear Sky Chart == Macon, GA



Post Extras: Print Post   Remind Me!   Notify Moderator  
Daniel Warner
stranger


Reged: 05/03/09
Posts: 2
Re: Vixen Polaris load capacity new [Re: JohnG]
      #3137542 - 05/31/09 12:27 PM

Hi John
I noticed that you own a Celestron /Vixen newtonian
I just purchased one and the primary is in need of a good cleaning. Can you please tell me how to remove the primary ? Do you have to remove the rear tube ring ?
Thanks for any help
Clear skies,Dan


Post Extras: Print Post   Remind Me!   Notify Moderator  
roscoe
curmudgeon


Reged: 02/04/09
Posts: 1938
Loc: NW Mass, inches from VT
Re: Vixen Polaris load capacity new [Re: Daniel Warner]
      #3138385 - 05/31/09 07:51 PM

Mine holds a Celestron/Vixen 80mm F/11 comfortably. I wouldn't mount anything any bigger, though.......... Russ

--------------------
Some glass
Some metal
Some wood
Some photons


Post Extras: Print Post   Remind Me!   Notify Moderator  
zjc26138
Loved By All


Reged: 02/24/05
Posts: 6961
Loc: Mingo Junction, Ohio
Re: Vixen Polaris load capacity new [Re: roscoe]
      #3138411 - 05/31/09 08:02 PM

I had a William Optics Megrez 100 mounted on a Vixen Polaris that was used in Alt-Az mode and it handled the weight quite nicely.

--------------------
TMB130 SS (Currently out of service. )
Celestron Edge 8"
iEQ45m
Meade 102ED
Stellarvue 80/9D

9/11- Never Forget.


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


Reged: 06/04/06
Posts: 1104
Loc: southern tip of Illinois
Re: Vixen Polaris load capacity new [Re: zjc26138]
      #3138526 - 05/31/09 09:02 PM

I have one on my C6 newt. I would say 10 is the limit.

--------------------
Celestron C6 f/5 by Vixen with Polaris GEM
14" Tscope dob f/4.7 with Argo Navis
80mm Nighthawk on Eq 2
Celestron C-4 f/10


Post Extras: Print Post   Remind Me!   Notify Moderator  
Preston Smith
The Travel Scope Guy


Reged: 04/24/05
Posts: 5966
Loc: Eureka, Pa
Re: Vixen Polaris load capacity new [Re: charen]
      #3139581 - 06/01/09 11:40 AM

It's important to note that the original Polaris mount can handle additional weight when used in the Alt-Az configuration. It works amazingly well for my SV115T which is an 11 pound scope plus the rings and dovetail bring it to about 13 pounds.

Here is a link to one of my posts where I have a picture of the scope on the mount - about half way down the post:

Traveling with the SV115T and the Vixen Polaris Mount

It is a superb travel mount in the Alt-Az configuration.

--------------------
Preston

Lift your eyes and look to the heavens: Who created all these? He who brings out the starry host one by one, and calls them each by name. Because of His great power and mighty strength, not one of them is missing. Isaiah 40:26

Stellarvue SV115T & SV70ED

Vintage: Asahi-Pentax, Celestron, Criterion, Edmund Scientific, Tasco, Unitron

My Telescope Gallery


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


Reged: 11/14/07
Posts: 285
Loc: Western Montana
Re: Vixen Polaris load capacity new [Re: Preston Smith]
      #3153457 - 06/09/09 03:58 AM

I load my l989 era Polaris with up from 11 to 14 pounds with my Brandon 94, scope rings, custom dovetail, and large 2" eyepieces not counting the 14 pounds of counterweights and CG-5 counterweight bar. With the Unitron legs which were available from Vernonscope in the late 80's and a JMI motofocus damping time is under 3 sec., as long as I don't bump the scope. Changing eyepieces or messing with the coarse focus sets up a longer settle down time. I have read in the classic scope forum that the Polaris and SP have identical load capacity. The SP redesign was primarily to enable dual axis drive. The gearing and bearing areas are about the same. I recently scored an aftermarket Dec drive also from JMI which was available when the mount was more current
Clear skies
Glenn

--------------------
152nn f9 Starfire Apo on Schaefer AT-4 Mount
94mm f7 Brandon Apo on ASGT (or Polaris when AGST is on the fritz.)
WO Zenithstar 66 f6 ED Pretzval on UA Microstar
Tasco 7TE-5 60mm. f16.7 EQ Refractor.
Celestron C-60E f15 on Polaris
Celestron CO 62 Cometron f5
Meade 390 90mm f11 on Mizar m-4
Tasco 8V
eyepieces, books, some old scopes and mounts - ect.


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


Reged: 01/28/08
Posts: 1147
Loc: PEI, Canada
Re: Vixen Polaris load capacity new [Re: Starpoke]
      #3366112 - 09/30/09 01:22 PM

I am wondering if anyone has any experience overloading a vixen polaris mount. I have an 8" f6 dob and am considering (despite common sense) mounting the OTA on a VP mount to try some short exposure AP. The last poster stated that he had put 14 pounds on a VP and didn't note any ill-effects on the mount, so I am wondering if mounting my 20 lb OTA will actually damage the mount, or if it will simply result in a longer time for vibrations to stop.

Cheers


Post Extras: Print Post   Remind Me!   Notify Moderator  
Eddgie
Postmaster


Reged: 02/01/06
Posts: 7951
Re: Vixen Polaris load capacity new [Re: dyslexic nam]
      #3370519 - 10/04/09 11:54 AM

I would not try this much weight.

A 4" refractor is about the top end of the Polaris.

The weak point is the altitude bracket. To get enough weights on it to balance would be risky.

Even the later Super Polaris would struggle with this amount of weight.

A GPDX on HAL-110 legs would be the minumum I would try in this class of mount, and the LXD-75 or CG5 GT would be better choices (but even here, I think you are pushing it).

--------------------
Celestron CGE 1400
Astro-Physics 6" f/8
Celestron EdgeHD C8
Antik AR1/Revenge Plates/Heartless Voodoos



The night sky is my mistress. She seduces me away from all other lovers.


Post Extras: Print Post   Remind Me!   Notify Moderator  
JIMZ7
Pooh-Bah


Reged: 10/22/05
Posts: 1368
Loc: near DTW Metro Airport
Re: Vixen Polaris load capacity new [Re: Eddgie]
      #5109315 - 03/06/12 10:04 PM

I just purchased one off of Craigslist for $50. The 4" f/9.8 refractor works perfectly with it. I bought some wooden legs from Hands on Optics for $89 shipped. All together they are very sturdy as a team. I use to have a Celestron 4" f/9.8 refractor on a Super Polaris mount 20 years ago. This Polaris mount with the wooden legs and 4" refractor looks and feels like the older scope setup.

Jim

--------------------
Discovery 10" f/5.6 DHQ
Televue 10.5mm Plossl "smoothie"(R)
Celestron 26mm Plossl "silvertop"(V)
Celestron 30mm Plossl "pre-Ultima"
Minolta 10x50mm Standard EWA

**************************************************
"He stretcheth out the heavens as a curtain,and spreadeth them out as a tent to dwell in." Isaiah 40:22
"Therefore rejoice,ye heavens,and ye that dwell in them" Revelation 12:12


Post Extras: Print Post   Remind Me!   Notify Moderator  
Starhawk
Post Laureate


Reged: 09/16/08
Posts: 3351
Loc: Tucson, Arizona
Re: Vixen Polaris load capacity new [Re: JIMZ7]
      #5109444 - 03/06/12 11:40 PM

I have a C8 on my Vixen Polaris. It turned that scope into a grab and go.

It can't go heavier than that.

-Rich.

--------------------
I lost count of my scopes. Now I just want mobility.
I came, I saw, I bought some interesting accessories; NEAF 2012. It came to me, I saw, I put some names to faces; ASAE 2012.


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


Reged: 09/27/06
Posts: 2999
Loc: Seattle, WA
Re: Vixen Polaris load capacity new [Re: Starhawk]
      #5109734 - 03/07/12 12:33 PM Attachment (64 downloads)

Used mine last night - extremely lightweight and reasonable stable. I added a simple Celestron motor drive for tracking.

Attachment

--------------------
WO Megrez 120 ED on GP Mount & Surveyors Tripod
WO ZenithStar 80 ED II
10" Meade LightBridge/Paracorr
Orion ED 100 on Polaris Mount
Astro-Tech 8" f6 Dob
Bushnell Ares 5
Meade 226 2.4" f11.7
SpaceScope 2.4" f15


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


Reged: 10/13/05
Posts: 2186
Re: Vixen Polaris load capacity new [Re: SteveG]
      #5109780 - 03/07/12 12:52 PM Attachment (56 downloads)

Quote:

Used mine last night - extremely lightweight and reasonable stable. I added a simple Celestron motor drive for tracking.




A four year old thread and finaly a picture! Carved out of a solid block of aluminum this one may have a higher payload but I still would not stick a C-8 on it.

Attachment


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


Reged: 10/13/05
Posts: 2186
Re: Vixen Polaris load capacity new [Re: greju]
      #5109791 - 03/07/12 12:55 PM Attachment (57 downloads)

A three inch refractor-no problem.

Attachment


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


Extra information
0 registered and 83 anonymous users are browsing this forum.

Moderator:  Charlie Hein, lineman_16735 

Print Thread

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


Thread views: 6418

Jump to

CN Forums Home



Cloudy Nights Sponsor: Astronomics