Author Topic: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor  (Read 248 times)

meisporbiopop

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Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« on: December 29, 2017, 03:56:31 AM »
New to the hobby. Hate those German mounts with the weights and all. Had the Twilight I mount, but lots of wobble with my 40 inch 12 pound refractor. Looking at the Vixen Porta II mount. Vixen Porta II has a 20 pound capacity, but so did the Twilight I. I just purchased a Meade LX70 5 inch refractor that is 40 inches long and 12 pounds.

Any help would be great.

Please email me at [email protected]



calbeyrefrows

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #1 on: December 29, 2017, 03:28:20 PM »
I own two Vixen Porta II Mounts, and even though I love using them, I recognize that they may be taxed too much by a 12-lb. payload. Normally, folks try to place a maximum payloadamounting to only one-half of the rated capacity of the mount, so that would limityou to 10lbs.I have read here on Cloudy Nights that the Twilight I is not as robust as the Vixen Porta II.

noneanoncrag

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #2 on: January 08, 2018, 11:20:56 PM »
Thanks Viking 1. Seems like I will have to go with an equatorial mount. What would be the easiest one for me use that is under $400.

Justin Lewis

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #3 on: January 10, 2018, 05:05:15 AM »
If you can afford it, I would try one of the great mounts made by Beat Kohler. Search for "aokswiss" in the search engine of your choice and you'll find his website. I took delivery of a fantastic AYOdigi II in black just last Wednesday. It's VERY solid- his load estimate on the webpage must be pretty conservative (30 to 40 lbs). I have a SW ProED 120mm (11ish lbs) and the mount doesn't even act like anything is on it when I set the scope up. I would have gotten an AYO II, but I wanted something a little beefier to accommodate a bigger scope in the future. Note that these mounts are pretty expensive and you have to wait for him to make them, but for the excellent craftsmanship you get, it's well worth it. I am 100% certain that this is my "lifetime" alt-az mount.

highdanmyne

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #4 on: January 12, 2018, 02:55:18 AM »
If you want a GEM something at the level of the AVX or Sirius EQ-G would be plenty good enough.

brentioscaraph

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #5 on: January 13, 2018, 08:37:08 AM »
darrylspence,

I find the Explore Scientific Twilight II ALT-AZ mount works well with my 25lbs AT 130mm triplet refractor (37.5" in length).

I do use counterweights when using just one scope AND I did install a $8 needle bearing under the top post.

Why? you may ask...

Well I can then ADD a second 20 lb. Celestron C9.25 scope and the mount movement in AZ is as smooth as a baby's buuuuuttt.
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Antonio Zuniga

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #6 on: January 14, 2018, 05:39:02 AM »
Thanks for all the advice. Howabout the Orion Skyview Pro EQ. How good is it and what is the ease of use?

Jacob Hernandez

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #7 on: January 20, 2018, 04:11:07 PM »
Better look for a used Vixen GP or Vixen SP. The SP is particularly nice as it can also operate in alt-az mode as well.

The Orion SVP and Celestron CG-5 are Chinese clones of the Japanese Vixen GP.

Japanese >> Chinese.

A used SP should cost you $250.

David Schwartz

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #8 on: January 23, 2018, 07:29:51 AM »
One of the Stellarvue mounts would be a good choice for alt-az.

bumabbefat

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #9 on: January 23, 2018, 08:44:00 AM »
It would be appropriate to let us know whether you want to have slow motion controls on both ALT and AZ axes.
If no slow motion controls, I would recommend the Stellarvue M2 mount - a new version or used version.
Get the SV extension column and a nice heavy duty wooden tripod (Oberwerk, etc).
The better options with slow motion controls are much more expensive.

Keith Pennington

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #10 on: January 23, 2018, 04:18:44 PM »
Quote
It would be appropriate to let us know whether you want to have slow motion controls on both ALT and AZ axes.
If no slow motion controls, I would recommend the Stellarvue M2 mount - a new version or used version.
Get the SV extension column and a nice heavy duty wooden tripod (Oberwerk, etc).
The better options with slow motion controls are much more expensive.

I second this recommendation. Get the Stellarvue M2 head for $299 then find a used CG4 or AVX tripod to use with it

Jon

Zachary Tenk

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Re: Best Alt Alt azimuth Mount For 40 Inch 12 Pound Refractor
« Reply #11 on: January 25, 2018, 02:02:22 PM »
Thanks to you all. Went with the Orion Skyview Pro eq.