Sky-Watcher AZ-GTi AZ GoTo Mount Information

Look | Look with Tripod and Telescope Tubes | First Photo Attempts | Preliminary Conclusions | Links || Appendix: Data

On this page, I present some information about my Sky-Watcher AZ-GTi mount head (ordered on January 27, 2021, arrived on January 29). The tripod of the Sky-Watcher AZ Pronto mount makes it an azimuthal GoTo mount, controlled via a smartphone using the Sky-Watcher SynScan app or the synscan handbox. I plan to use the Celestron C5 and Omegon PS 72/432 tubes on this mount.

See the appendix for the data.

See also:

 

Look

Unpacking

Outer package

Ditto

Ditto, opened

Inner box taken out

Inner box

Inner box opened

Top foam removed

Closer look

Even closer look

Mount taken out of the box (with camera cable)

AZ-GTi mount

Back with dovetail

Ditto

Ditto

Oblique view

Altitude clutch wheel and control panel

Ditto

Ditto

Bottom view

Oblique view

Ditto

Top view with bubble level

Ditto, more oblique view

Ditto

 

Look with Tripod and Telescope Tubes

AZ-GTi Mount Head with AZ Pronto Tripod

AZ-GTi mount head on AZ Pronto tripod without extension tube

 

AZ-GTi mount head on AZ Pronto tripod with extension tube

AZ-GTi Mount with C5

C5 on AZ-GTi mount with extender

Ditto

Zenith position without any problems...
Without extender
Without the extender, the C5 does not touch the tripod legs in the zenith position

AZ-GTi Mount with PS 72/432-Refractor

AZ-GTi mount with extension on the AZ Pronto tripod, PS 72/432 refractor

Ditto

Right: AZ-GTi mount without extension on the AZ Pronto tripod, PS 72/432 refractor

Without extension, the refractor hits the tripod legs when pointing to objects close to the zenith - or is at least close to hitting the tripod...

AZ-GTi mount without extension on the AZ Pronto tripod, PS 72/432 refractor

 

First Photo Attempts

Photos actually tell fairly little about a mount, at best about the telescope tubes and the camera used. Nevertheless, I present here some processed photos of M 42/43 that were taken with the Atik Infinity camera at the C5 (with reducer/corrector) and at the PS 72/432. Without the reducer/corrector, the C5 would magnify the Orion Nebula even more. So this equipment would be better suited to photographing small targets, such as globular clusters, planetary nebulae, and small galaxies.

      
C5: M 42/43, f/6,3 Reducer/Corrector  

PS 72: M 42/43

 

PS 72: M 42/43

      
C5: M 42/43, f/6,3 Reducer/Corrector  

PS 72: M 42/43

 

PS 72: M 42/43

 

First Experiences

On the very first day (January 29, 2021), I was, due to the weather, only able to do "dry runs", both with the SynScan hand control and with the SynScan app. I tried moving the mount with the cursor keys as well as do "pseudo alignments" and "pseudo GoTos" . Everything worked well, although the mount "lagged" a bit at high speeds. Especially with the hand control, it took a short moment until the mount started moving. Therefore, when I did my very first tests, I thought that moving the mount with the cursor keys would not work. But that was not the case; you just have to wait a little moment for the mount to move, though....

On February 12, 2021, I used the AZ-GTi mount for the first time at night, however not with a telescope, but with my Sony RX10 M4 camera, which I had fastened to the mount using an angle bracket. I worked with exposure times between 1 and 30 seconds. All in all, it worked well, although an exposure time of 30 seconds is actually too long for an AZ mount...

The next day, February 13, 2021, I operated a telescope on the AZ-GTi for the first time, namely my C5 with f/6.3 reducer/corrector, 1.25" visual back and attached Atik Infinity camera. The alignment was always a bit off, the sky object too far to the left, but just visible in the eyepiece.... After a tracking test of a quarter of an hour, the Orion Nebula M 42/43 was lost in the eyepiece, but found be caught again by a GoTo command (it was thereafter centered fairly well); apparently, I had wrong or no tracking. I had similar problems later in EQ mode as well...

On March 19 and 25, 2021, I operated the Omegon PS 72/432 refractor on the AZ-GTi, which I controlled with the SynScan app. I only did a 1-star alignment. I exposed everything with 15 seconds on the second session (longer exposure times produce elongated stars). On the whole, I got along with the mount, but because of my sloppy alignment, the GoTo was not very accurate.

My initial experiences demonstrated to me that I can work well with the AZ-GTi mount in combination with my smaller telescope tubes, and even with the Atik Infinity camera attached (that is, I can do "EAA"!). But I would have to do a more precise alignment to achieve a better GoTo and tracking.

 

Preliminary Conclusions

The AZ-GTi mount is compact and relatively light. Therefore, it can be used with my small tubes, the C5 and the PS 72/432 refractor on the AZ Pronto tripod. This is how it is sold as "AZ-GTi mount", whereas I already owned the AZ Pronto mount when I bought the head. However, the German astronomy dealer Teleskop-Spezialisten also offers a steel tripod for this head, which is at least similar to the one of the AZ4 mount (unfortunately, the head does not fit on my AZ4 tripod because of a pin...). Of course, such a steel tripod is much more bulky and cannot be used when traveling. But I can understand this step, because the AZ-Pronto tripod is quite wobbly with the AZ-GTi mount head (and also with its own manual mount head).

Since I already knew the operation from my Star Discovery mount, the mount did not confront me with any great puzzles. Actually, it is only intended to be controlled via WLAN (via SynScan app on the smartphone or Windows computer), but it can also be operated with the handbox that I got with my Star Discovery mount (in the meantime, this is also now sold only with the SynScan WLAN module). This saves a device that needs to be powered, which can be crucial especially in winter, when my smartphone and laptop broke down in short time because the batteries were exhausted...

A special feature of the AZ-GTi mount is that it can also be operated as an EQ mount. Sky-Watcher unfortunately supports this mode only unofficially, so there is no documentation for it and you have to "muddle through" on your own. I describe my first experiences in this matter on page Wedge for Sky-Watcher AZ-GTi AZ GoTo Mount - First Experiences.

All in all I, do not regret to have purchased the AZ-GTi mount head and hope that the mount will also open the door to "do-it-yourself EAA" for me!

 

Links

 

Appendix: Data for Sky-Watcher AZ-GTi Mount

Package Content

Data

 

An den Anfang   Homepage  

gerd (at) waloszek (dot) de

About me
made by walodesign on a mac!
08.04.2021