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High quality Alt Az mounts

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#51 25585

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Posted 20 October 2021 - 07:14 AM

No such thing as over mounted, only under mounted.


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#52 D_talley

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Posted 20 October 2021 - 12:16 PM

I ordered the M2C on Monday and expect it to be delivered by Thursday. Also ordered the encoders and DSC but I am not getting any response from AstroDevices.



#53 GOLGO13

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Posted 20 October 2021 - 01:14 PM

No such thing as over mounted, only under mounted.


That's where I don't always agree. Is a paramount needed for a 60mm F6 refractor? I think mounts should be fitted to the intended purpose and scope.

I prefer zero vibration, but I'm also OK with one second dampening time. Above 1 second it gets a bit dicey for me. But everyone has their tolerance.

I prefer lightweight setups where possible. That has more weight for me (haha) than being extremely stable.
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#54 jcj380

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Posted 21 October 2021 - 12:18 PM

When I receive the M2C, I am going put it on my Manfrotto 475B and see if the combination will provide enough stability to work as a “too small” mount for my 92mm f6.7 refractor. 

Since I own a 475B, I'm looking forward to hearing your impressions.



#55 bigdob24

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Posted 21 October 2021 - 12:49 PM

I just got a Rowan AZ100 and like it a lot. 

I got it without encoders and the nexus as all I do is solar, and saved a few bucks 
It is very smooth and sturdy , well built.I’ve got a Lunt LS100THA DS on one side and a AT115 with a White Light Wedge on the other.

Balance Is difficult with these scopes as there is an 8lb Double Stack filter on one end and a Denk ll bino with zoom eyepieces on the other.The AT is a triplet and heavy on the objective end and a white light wedge on the other. I struggled and decided to balance at the angle I’d be observing at and it works fine.

Clutches hold well and the slow motion cables are very helpful .

I have the tripod mounted on a dolly to roll it out and it’s a little shaky but settles fast, working on that , thinking about scree down stabilizers on all there end points.Also going to take the tripod off and set it on the ground and see if that helps.

This mount is tall when setup but works for me, I’ll lower the whole setup when I set it on the ground, another advantage.

 

 

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#56 Terra Nova

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Posted 21 October 2021 - 01:59 PM

I have an Orion U-Mount on a UA heavy duty surveyors tripod outfitted with a custom fixed accessory tray. I switched out the arca-swiss saddle that came with the U-Mount with an ADM-Vixen saddle. The setup handles my 102mm and 120mm Vixen refractors and my 152mm ATM rich field Newtonian just fine. 

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#57 gwlee

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Posted 21 October 2021 - 04:14 PM

No such thing as over mounted, only under mounted.

I agree with you up to a point. I had a DiscMounts DM6 and DM tall wooden tripod for my 101mm and 210mm scopes. The stability that DM6 offered with these scopes was an eye opener. I was so impressed that I put a “D” plate on my TV60 and mounted it on the DM6, and it showed me things I didn’t think possible with a 60mm scope.

 

It wouldn’t say it was over mounted, but it was so well mounted that it became unusable for many of the things I bought the TV60 to do. Same goes for the AT72EDII that I occasionally use on my DM4 when I want to take advantage its DSCs, so I have lighter mount that I most often use with this scope. 


Edited by gwlee, 22 October 2021 - 01:34 AM.

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#58 gwlee

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Posted 21 October 2021 - 05:29 PM

Since I own a 475B, I'm looking forward to hearing your impressions.

Rain or snow is forecast for the next week, and I need to purchase a  compatible “D” plate to evaluate my 92mm f6.7 refractor with the 475B/MC2. I have my AT72ED2 mounted on it now using its Vixen-compatible plate.

 

First impressions: MC2 seems like well a made, but inexpensive mount that weighs about the same as my DM4 (6#) that’s equipped with DSCs. It’s not quite as elegant as the DM4, but probably a much better value. It like it’s externally adjustable (no tool) knobs for setting alt/az resistance. Wish the DM4 had them.

 

The M2C uses a 6” saddle that’s supposed to work with either V or D plates without adjustment. The DM4 uses a 4” saddle with an adapter that must be repositioned using an Allen Wrench to accommodate either V or D plates, but the DM4 design is best suited to D plates. The adapter works OK, but it’s not very convenient. 

 

I find most mounts work well enough to satisfy me when used at about 50% of the manufacturers maximum recommended load. SV recommends the MC2 for SV scopes between 80mm and 130mm (25#) and rates the MC2/475B combo for SV scopes up to 4 inches.

 

The AT72EDII was adequately mounted on the UA DwarfStar and 475B, and it seems to be very well mounted on the MC2/475B, but I need to do more testing. Hoping that the MC2/475B combo proves to be an adequate light mount for my 92mm f6.7 refractor to complement the heavier DM4/Oberwerk wooden tripod that I am using with the 92mm f6.7 refractor now. If so, I plan purchase another for my use. I bought this one as a surprise present for a friend to use with her new 80mm f7 refractor. 


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#59 rhaskins

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Posted 21 October 2021 - 06:56 PM

No such thing as over mounted, only under mounted.

I fully agree.

AZ100APM
 
Rick

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#60 GOLGO13

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Posted 21 October 2021 - 09:33 PM

I don't feel that way. I got a wonderful Vixen AP mount that has a capacity of 13 pounds. It's absolutely wonderful for my Lunt 50mm double stack and the 76 DCU. It is literally a grab and go EQ mount...which is unusual.

Sure, I guess I could use the GPD2, but why? Heavier and more to setup. Totally unnecessary.

Also have a nice Unistar light that works for those scopes.
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#61 25585

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Posted 22 October 2021 - 06:03 AM

I like smaller mounts & tripods that can easily be beefed up. Lowering centre of gravity is easy. Splints for tripod legs. Better fixing hardware for the mount.



#62 GOLGO13

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Posted 22 October 2021 - 08:47 AM

I like smaller mounts & tripods that can easily be beefed up. Lowering centre of gravity is easy. Splints for tripod legs. Better fixing hardware for the mount.


Talk more about the splints please. I have a few camera tripods that have no bracing on the legs. I'm sure that is affecting the capability.

#63 Tamiji Homma

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Posted 22 October 2021 - 10:36 AM

Here is W Master by Supermount.  It is simple, no encoder, relatively light weight (about 3.1Kg) that supports 6" f/8 well.

 

Here is photos with 5" f/9.2.

 

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Smooth even pointing to zenith.

 

large.jpg

 

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closeup:

large.jpg

 

Tammy


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#64 gwlee

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Posted 22 October 2021 - 11:44 AM

I like smaller mounts & tripods that can easily be beefed up. Lowering centre of gravity is easy. Splints for tripod legs. Better fixing hardware for the mount.

Lowering the center of gravity by shortening leg length usually reduces leg spread too, making the tripod more prone to tipping, unless the tripod has an infinitely adjustable leg spreader like the Manfrotto 475B. This tripod allows me to set both tripod height and leg spread independently, so it’s become my favorite tripod for small refractors like the AT72EDII, and it’s contributed to the AT72EDII becoming my most used scope these days. 

 

To me, it’s a must-have, ergonomic advantage that I wish my DM4/Oberwerk mount for my 92mm f6.7 offered, so I am searching for the best way to bring this advantage to my larger refractor. The first step is testing the MC2/475B combination to determine whether it’s an adequate light-weight mount my the 92mm f6.7 for use at low magnifications for viewing “binocular objects.”


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#65 sunrag

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Posted 22 October 2021 - 08:37 PM

I like the Losmandy AZ-8 for its ease of setup and dual OTA capability. It can hold up to 70lbs (35lbs on each side) but I have not exceeded 25 lbs on each side. When properly balanced, the motions are very smooth.

 

Here it is with a Meade 8" SCT and a Celestron 6" refractor. 

 

IMG_9468.JPG

 

 

Here with two Meade 4.5" reflectors. Although this is not the reason why I got this, I can see the possibilities for a bino-scope. Yes, I know there is more to making a bino-scope than putting two OTAs together. I need to work on lengthening the optical path and provide adjustments for IPD and XY merging, but this AZ8 takes care of a lot of the mounting issues for a medium size bino-scope.

 

IMG_9763.JPG

 


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#66 25585

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Posted 23 October 2021 - 04:52 AM

AZ8 for that size, would be my choice.


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#67 25585

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Posted 23 October 2021 - 05:02 AM

Talk more about the splints please. I have a few camera tripods that have no bracing on the legs. I'm sure that is affecting the capability.

 

At simplest I use wood dowl strapped to photo tripod legs, but I have some telescopic hiking poles, which are light and strong which work well.  For astro, dismembered(!) legs from old broken tripods come in useful


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#68 Castor

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Posted 23 October 2021 - 05:08 PM

[...]

The AT72EDII was adequately mounted on the UA DwarfStar and 475B, and it seems to be very well mounted on the MC2/475B, but I need to do more testing. Hoping that the MC2/475B combo proves to be an adequate light mount for my 92mm f6.7 refractor to complement the heavier DM4/Oberwerk wooden tripod that I am using with the 92mm f6.7 refractor now. If so, I plan purchase another for my use. I bought this one as a surprise present for a friend to use with her new 80mm f7 refractor. 

 

 

Lowering the center of gravity by shortening leg length usually reduces leg spread too, making the tripod more prone to tipping, unless the tripod has an infinitely adjustable leg spreader like the Manfrotto 475B. This tripod allows me to set both tripod height and leg spread independently, so it’s become my favorite tripod for small refractors like the AT72EDII, and it’s contributed to the AT72EDII becoming my most used scope these days. 

[...]

Hi,

 

If you like the versatility of the Manfrotto 475B tripod (weight 9.5 lb, max. load 26.4 lb) but want more capacity and don’t mind the extra weight (and current USD$430 price tag from Amazon.com) there’s the Manfrotto 117B tripod (weight 13.9 lb, max. load 39.6 lb) with only two leg sections (instead of three) with the lower one made of stainless steel (instead of aluminum) and hand knobs instead of levers for adjusting leg extension.  My only complaint with the 117B is that it doesn’t have reference click stops on the spreader strut system for quick, repeatable leg angle adjustment during setup, unlike the 475B, but that’s a minor one.

 

I currently use the Manfrotto 117B tripod with a Tele Vue Tele-Pod mount to carry my TV-85 f/7 refractor and I find the combination more stable than with either the Manfrotto 475B or the TV Panoramic Mount and ash wood tripod, although somewhat less portable, but still more portable than a Gibraltar mount with ash wood tripod.

 

Something more to consider!

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#69 jcj380

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Posted 25 October 2021 - 12:27 PM

Are the 117B leg extensions the same thickness as the thicker leg extensions of the 475B?  From the pix, it looks like the 117B are about the same as the thinner bottom ones on the 475. 

 

Maybe it makes no difference in stability, but I like the beefier center extensions on my 475.  I very rarely extend the bottom (thinner) sections.


Edited by jcj380, 25 October 2021 - 12:27 PM.

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#70 gwlee

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Posted 25 October 2021 - 04:29 PM

Hi,

 

If you like the versatility of the Manfrotto 475B tripod (weight 9.5 lb, max. load 26.4 lb) but want more capacity and don’t mind the extra weight (and current USD$430 price tag from Amazon.com) there’s the Manfrotto 117B tripod (weight 13.9 lb, max. load 39.6 lb) with only two leg sections (instead of three) with the lower one made of stainless steel (instead of aluminum) and hand knobs instead of levers for adjusting leg extension.  My only complaint with the 117B is that it doesn’t have reference click stops on the spreader strut system for quick, repeatable leg angle adjustment during setup, unlike the 475B, but that’s a minor one.

 

I currently use the Manfrotto 117B tripod with a Tele Vue Tele-Pod mount to carry my TV-85 f/7 refractor and I find the combination more stable than with either the Manfrotto 475B or the TV Panoramic Mount and ash wood tripod, although somewhat less portable, but still more portable than a Gibraltar mount with ash wood tripod.

 

Something more to consider!

Thanks. I will keep the 117B in mind for my 92mm f6.7 refractor. Based on a preliminary test of my 92mm refractor mounted on the 475B/MC2 combo, it looks like this combo might make an adequate light mount to be used at low magnification, but probably isn’t adequate for all around use with this scope. 

 

So, I ordered an Oberwerk TR3  wooden tripod this morning that has a continuously adjustable, metal, leg spreader that I believe will work better as an all around mount for the 92mm refractor than the older Oberwerk Tall Wooden tripod that I am using now.


Edited by gwlee, 25 October 2021 - 04:48 PM.

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#71 Castor

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Posted 25 October 2021 - 05:06 PM

Thanks. I will keep the 117B in mind for my 92mm f6.7 refractor. Based on a preliminary test of my 92mm refractor mounted on the 475B/MC2 combo, it looks like this combo might make an adequate light mount to be used at low magnification, but probably isn’t adequate for all around use with this scope. 

 

So, I ordered an Oberwerk TR3  wooden tripod this morning that has a continuously adjustable, metal, leg spreader that I believe will work better as an all around mount for the 92mm refractor than the older Oberwerk Tall Wooden tripod that I am using now.

 

You are welcome!

 

I brought it up because the Manfrotto 117B tripod is not as widely known in the astronomy forums as the 475B, even though it’s basically a heavier duty version of the later.

 

Excellent decision ordering the Oberwerk TR3, a wooden tripod looks nicer and is better to dampen vibrations! waytogo.gif 



#72 Castor

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Posted 25 October 2021 - 05:11 PM

Are the 117B leg extensions the same thickness as the thicker leg extensions of the 475B?  From the pix, it looks like the 117B are about the same as the thinner bottom ones on the 475. 

 

Maybe it makes no difference in stability, but I like the beefier center extensions on my 475.  I very rarely extend the bottom (thinner) sections.

Hi,

 

Yes, the Manfrotto 117B tripod leg extensions are the same thickness as the thicker leg extensions of the Manfrotto 475B.

 

These are official the specs from Manfrotto:

475B Legs diameter: 35mm, 30mm, 25mm (aluminum).

475B Closed length: 80cm

475B Maximum height: 162cm

475B Max. height w/extended center column: 188cm

475B Weight: 4.3kg

475B Max. load capacity: 12kg

117B Legs diameter: 35mm (aluminum), 30mm (stainless steel tube).

117B Closed length: 94cm

117B Maximum height: 147cm

117B Max. height w/extended center column: 173cm

117B Weight: 6.3kg

117B Max. load capacity: 18kg

 

These are my own measurements taken today:

475B Top leg diameter: 35.5mm; length: 60.0cm

475B Middle leg diameter: 30.5mm; length: 51.5cm

475B Lower leg diameter: 25.1mm; length: 58.0cm (incl. spike tips)

475B Geared column diameter: 33mm; max. extension: 26cm

117B Top leg diameter: 35.5mm; length: 80.0cm

117B Lower leg diameter:  31.2mm; length: 69.0cm (incl. spike tips)

117B Geared column diameter: 33mm; max. extension: 26cm.

 

Here’s is a picture of my Tele Vue Tele-Pod on the Manfrotto 117B tripod taken from a different angle.

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#73 GOLGO13

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Posted 25 October 2021 - 05:19 PM

My M2C is on the way!! Can't wait to try it out. Ordered some Primalucelab goodies to go with it.

Looking very forward to having encoders again.
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#74 Castor

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Posted 25 October 2021 - 05:24 PM

My M2C is on the way!! Can't wait to try it out. Ordered some Primalucelab goodies to go with it.

Looking very forward to having encoders again.

Congratulations Golgo13! smile.gif

 

I hope you find this mount to be the best compromise in portability and stability for frequent use with your wonderful Tak TSA-120!


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#75 gwlee

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Posted 25 October 2021 - 07:15 PM

You are welcome!

 

I brought it up because the Manfrotto 117B tripod is not as widely known in the astronomy forums as the 475B, even though it’s basically a heavier duty version of the later.

 

Excellent decision ordering the Oberwerk TR3, a wooden tripod looks nicer and is better to dampen vibrations! waytogo.gif 

In the long run, I’d like to find a scaled up version of the 475B that’s suitable for 92mm scope, so glad you mentioned the 117B.

 

I have been temporarily using an older, 12.5#, imported Oberwerk Tall wooden tripod and DM4 mount with my 92mm refractor. It has a fixed fixed, plastic spreader that doesn’t allow spreading the legs wide enough when the tripod height is low.

 

The 12# TR3 is manufactured by Oberwerk and has an adjustable metal spreader that should address this problem, and allow me to give my older Oberwerk to a friend to use with her new 80mm scope. 


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