Sky-Watcher AZ Pronto Mount Information

Motivation | Look | Look with Telescope Tubes | Basic Data | First Photo Attempts | First Experiences | Preliminary Conclusions | Links

On this page, I present some information about my new Sky-Watcher AZ Pronto telescope mount (ordered on August 6, 2018 , arrived on August 10). Originally, I intended to use the Sky-Watcher Heritage 100P telescope tube, the Skymax-102 OTA, and the Skymax-127 OTA on this azimuthal mount, with the Skymax OTAs particularly for taking photos of the moon and planets. See the photos further below. Meanwhile, I sold the Skymax-102, have the Heritage 100P away, and added an Omegon PS 72/432 refractor to my equipment (I also added some photos). Thus, my equipment has changed somewhat in the meantime...

The basic data were taken from the Teleskop-Spezialisten Website, where I purchased the mount.

 

Motivation

Why did I buy the Sky-Watcher AZ Pronto telescope mount and for what purpose? I bought it mainly to operate my two Sky-Watcher Maksutov OTAs, the Skymax-102 and the Skymax-127, fast, without needing electricity, and somewhat shake-free on a simple azimuthal mount. Maybe I will use the Heritage 100P on that as well, but it is actually in "good hands" on its own Mini-Dobson base.

In the course of time, there was a certain change in my equipment pool, and the Heritage P130, on whose basis I wanted to operate my Maksutovs as well, has left my house. The only way out was using the Star Discovery mount or the base of the Heritage 100P. The first solution is too cumbersome with as well as without electricity, the second one is actually much too wobbly, especially with the much too heavy Skymax-127 tube, which is why I hardly used this tube after I had purchased it used.

I finally wanted to change this, especially since I had noticed that my photo tripods, just like the Mini-Dobson base, have problems with locking the height axis. When I tighten the Mini-Dobson base screw at a certain vertical position, the height axis still continues to move slowly - and much too fast for observation or photography when higher magnifying eyepieces are used. With one of my tripods, the height axis even slips through and can no longer be locked if the telescope tube is positioned too steep.

So I took advice from my dealer. He suggested the Sky-Watcher AZ4 and AZ Pronto mounts as possible alternatives. The AZ4 mount can carry more weight (up to 8 kg), but because the prism rail is mounted laterally and the tubes cannot be mounted reversely, this leads to an unfavorable position of the viewfinder (I discussed this in detail elsewhere...). So this mount was not an option for me. Thus, only the AZ Pronto mount remained as a candidate, even though, having only a load capacity of up to 3 kg, it is already overloaded with the Skymax-127. Like the AZ3 mount, it has flexible shafts for convenient fine adjustment of both axes. The future will show whether the AZ Pronto is indeed overloaded with the Skymax-127, or whether this combination is "workable" (I have a similar problem with the Star Discovery mount with my Exporer 150PDS tube...).

Update: In September 2018, I bought an Omegon Photography Scope 72/432 refractor, in summer 2018, I had already sold my Sky-Watcher Skymax 102, and in early 2019, I gave away the Heritage 100p. So, there was a change in my equipment, and now I use the PS 72/432 and the Skymax-127 on this mount.

 

Look

Unpacking

Outer package

Ditto

Ditto

Ditto, opened

Ditto

Ditto

Shipping weight: 6.0 kg
Shipping size: 117 x 25 x 23 cm

 

Inner boxes shown

Inner boxes opened

Ditto

 

Package content...

 

Mount Assembled Partly and as a Whole...

Without Extension Tube

Tripod with eyepiece holder

Eyepiece holder, also called accessory tray...

Mount without extension tube

Ditto

Ditto

Mount with flexible shafts for Maksutov tubes

Ditto, other side

Mount with flexible shafts for Newtonian tubes

Ditto, other side

Extension Tube

Extension tube

Ditto, from the other end

Top part removed for attaching the mount head

The three screws on top have to be loosend to remove the top element of the extension tube. This way, it is easier to screw the mount head to the extension tube.

Mount head and removed upper part of the extension tube

Mount head attached to upper part of the extension tube

Mount head with flexible shafts (for Maksutov) and extension tube

 

Mount head with flexible shafts (for Maksutov) attached to the extension tube

 

With Extension Tube

Mount with extension tube

Ditto

Ditto with flexible shafts for Maksutov tubes

Completely Assembled

Mount with extension tube (145,5 cm)

Ditto, tripod collapsed (96,5 cm)

Mount without extension tube (123 cm)

The first version is too high for me, currently I prefer not to use the extension tube.

 

Look with Telescope Tubes

Mount with Heritage 100P Telescope Tube

Note: For Newtonian telescopes the flexible shafts point to opposite directions! Also note that I do no longer own the Heritage 100P.

Without Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

With Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

Mount with Skymax-102 OTA

Note: For the Skymax tubes both flexible shaft point backwards! Also note that I do no longer own the Skymax-102.

Without Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

With Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

Mount with Skymax-127 OTA

Note: For the Skymax tubes both flexible shaft point backwards!

The Skymax-127 OTA weighs more than 3 kg and can therefore be used on the AZ Pronto mount only with caution. Here are some photos!

Without Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

With Extension Tube

Side view

Ditto (detail)

Other side

Ditto (detail)

PS 72/432 Refractor

Note: For the refractor tube both flexible shaft also point backwards!

PS 72/432 refractor with 2" to 1.25" Amici prism (left) as well as with mit 1.25" Amici prism (center, right)

PS 72/432 refraktor with 1.25 " zenith mirror and 1.25" eyepiece

PS 72/432 refractor with 2" zenith mirror and 2" as well as 1.25" eyepiece (and adapter; bottom left)

 

Basic Data for Sky-Watcher AZ Pronto Telescope Mount

Package Content

Data

 

First Photo Attempts

Since photos can only be taken in cooperation with telescope tubes, I will show pictures on the pages of the respective telescopes, provided there should be any. Photos of the moon and of planets will primarily be shown in the respective sections for these sky objects.

 

First Experiences

You gain your first experiences, of course, when assembling the mount. As a left-handed person, I first mounted the flexible shafts on the wrong side. You have to take a closer look at the manual (or at product photos) to get it right...

My second "initial problem" was that the telescope tubes were moving back and forth horizontally, when I touched them, even though I had firmly tightened the locking screw. It turned out that the tubes' Vixen rails did not touch the bracket exactly, but were blocked by something. As soon as the rails were aligned with the bracket, everything was fine, and the wobbling was over. Obviously, when mounting telescope tubes to the AZ Pronto, I always have to make sure that the rail fits exactly!

Extension Tube, Tripod Height

The AZ Pronto mount is supplied with an extension tube, which weighs almost 830 g. My telescope dealer was not able to tell me whether the mount is better used with or without an extension tube. He wrote me that sometimes uses it this way and sometimes that way, depending on the height he needs. So, here are the advantages and disadvantages of both solutions from my point of view:

First I tried the mount without an extension tube, but it turned soon out that, depending on the telescope type (or viewfinder type and position) as well on as the vertical position of observed sky objects, one or the other way was better, as well as whether you should extend the tripod legs or not. Thus, I only can agree with my astro dealer - it depends...

Newton: Viewfinder osition and Flexible Shafts...

When using my small Dobsonian = Newtonian telescope tube Heritage 100P, the viewfinder is exactly on the right side of the tube when using the AZ Pronto mount. That does not seem very practical to me, but I do not have any experiences with this so far...

I was also surprised that the manual advises to mount the flexible shafts in opposite directions for Newtonians. This kind of mounting is not explained in the manual, but when I take a closer look at my photos, I realize that one can then operate each of the shafts with the respective hand (refractors and Maksutovs have the view at the back, so both flexible shafts point backwards).

Usage, Slipping

The mounting can be moved roughly by hand and finely with two flexible shafts. I find the operation with the shafts very pleasant compared to the "messing around" with my Mini-Dobson bases. Using these bases, it annoys me a lot that the azimuth angle continues to slip even after tightening the locking screw, so that I often have great difficulty with adjusting the height axis correctly (such problems do not occur with "real" Dobsonian bases, though). This slipping (however, when using a photo tripod) while observing the total lunar eclipse 2018 annoyed me once again, and so I decided to acquire the AZ Pronto for operating my Maksutov tubes on it.

However, the vertical/azimuthal axis of the AZ Pronto mount cannot be adjusted as sensitively as the horizontal one. There are sudden jumps in the movement, especially when the tube stands steep and the weight probably presses on the vertical axis on one side. Maybe a better balance of the tube might help.

I have also noticed that the azimuthal adjustment can come loose when the telescope tube stands fairly steeps and is unbalanced. According to my telescope dealer, you have to tighten the clutches a little more in such cases (you should "dynamically" tighten them as needed, he wrote). A certain caution is nevertheless required, because if the tube all of a sudden and with momentum turns to a vertical position, the mount might fall over...

I already wrote that Sky-Watcher suggests a different mounting of the flexible shafts depending on the telescope type. In the meantime, I have come to the conclusion that depending on the telescope you should try out how you want to attach the shafts yourself.

Trembling...

As expected, the AZ Pronto mount trembles after touches or operations, but it stops trembling much faster than my Mini-Dobson bases. I hope that with the AZ Pronto I will eventually be able to take "untrembled" photos of the Jupiter moons - so far I have not succeeded in doing so. A first attempt in this direction (on the first day) unfortunately failed due to upcoming clouds...

However, there is one application where the trembling of the mount bothers me a lot, namely when I mount a camera to the 32 mm DigiScope eyepiece, set it to "infinity" (MF) and adjust the focus at the telescope while checking this on the camera with an enlarged viewfinder image (viewfinder or LCD screen). With every movement of the tube's focus adjustment knob, the mount and thus, the camera trembles so much that I do not see anything on the display and have to wait until the mount has stopped trembling. This makes focusing continuously more or less impossible, and focusing becomes a bit of a gamble...

When observing purely visually, the mount stops trembling fast enough for me so that it does not disturb me.

A First - Negative - Surprise

When I tried to tighten the locking screw on the Vixen rail on August 20, 2018 to attach the Skymax-102 tube to the AZ Pronto mount, the screw seemed to revolve. I was shocked, and my first thought was that the thread, either that of the locking screw or that of the bracket, was damaged. I tried to tighten the Skymax-102 tube to some extent, but was afraid that the tube might fall out of the bracket. I then even tried to attach the heavier Skymax 127 tube to the mount - with even greater rservations. I probably should not have tried that out...

After I had calmed down a bit and thought about this matter (supper was in between...), I had the idea that the locking screw, which consists of a metallic threaded part and a knurled wheel made of plastic, might revolve in itself, and not the thread. And fortunately this was indeed the case! I tried out a spare locking screw from a Mini-Dobson base and it worked perfectly. I was also able to turn the knurled wheel of the clamping screw when I held the thread in place or carefully clamped it in a vise. The next morning, I described the issue to my astronomy dealer. It was obviously the first time that he had heard of such an issue (as is so often when you have an issue...).

Somewhere on the Internet I had read in a test or a review of the AZ Pronto mount that the owner had soon replaced the locking screw with a wing screw, but unfortunately I was not able to find this note again. anyway, I was probably not the first one who had this issue...

On the AME2018 astronomy fair, I found a suitable wing screw and will use it for now:

The new wing screw

Ditto

Wing screw from above

Wing screw, a closer look

Ditto

Ditto, a little more remote...

 

Preliminary Conclusions

All in all, the Sky-Watcher AZ Pronto mount meets my expectations, and I do not want to miss it anymore. So far, I even use the new Omegon PS 72/432 refractor exclusively on this mount, and I am very satisfied with this combination. Of course, I will use it on the Star Discovery GoTo mount one day, but the Pronto mount allows a much faster set up and makes the "starting threshold" much lower than for a mount that has to be adjusted first. Granted, I was even faster with the Heritage 100P with its small Dobsonian base, but that is history now... With the PS 72/432 on this mount, I was even able to observe objects close to the zenith (e.g. M 39), although viewing through the eyepiece is a bit tedious despite the zenith mirror. But at least it is possible!

Of course, there is always room for improvement, and I still have not properly understood the principle of slipping clutches. But first of all, this mount seems to have become my "workhorse" for my smaller telescopes.

 

Links

 

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23.04.2019