Sky-Watcher 400mm Extension Tube for AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55i
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Sky-Watcher 400mm Extension Tube for AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55iSky-Watcher 400mm Extension Tube for AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55iSky-Watcher 400mm Extension Tube for AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55i

Sky-Watcher 400mm Extension Tube for AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55i

£89.00
  (30 Reviews)
✓ 2 year warranty

:  

2x in stock shipped 1-2 working days

About this product

Model:  skyw_eq5_heq5_ext_tube
Part Number:  20856

This 400mm Sky-Watcher extension tube extends the height of AZ4 / EQ3 / EQM-35 / EQ5 / HEQ5 / AZ-EQ5 / EQ-AL55i mounts by about 16".

It is a popular choice with owners of long-tube refractor telescopes as it places the eyepiece at a more comfortable height and prevents the telescope from hitting a tripod leg.

The extension tube is installed between the top of the tripod and the mount head.

Mount stability is maintained through the metal, heavy-duty construction of the tube. 

It is also suitable for use with the Orion 05752 Monster Parallelogram Binocular Mount. 

 

Installation Video

This is for an AZ-EQ6, but the principle is the same, except that this version comes with an azimuth pin for the top and can fit over an azimuth pin already in place on the tripod.

Customer reviews

Average Rating (30 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Must have if you have a long refractor on an HEQ-5 mount!
17 October 2024  | 

As the title states this is a great add on if you don't want your camera on a long refractor to hit your tripod legs. I can now track thru the Zenith without fear. Really lifts the scope up higher, may have to get a step stool to adjust settings. It makes the whole setup look really cool. Puts the mount at about eye level when I polar align and that beats hunching over and twisting screws. It is a cheap upgrade to a great mount. Get it!!

Tony


Rating (max 5):  
Why didnt I get one sooner!
30 September 2024  | 

A must have if using a longish refactor! I was imaging one of the Barnard targets and my filter wheel in its configuration would hit the mount and hour before the meridian, also once flipped it would also hit which caused the plan to fail. This was somewhat annoying in losing at least two hours per night on the target, however no more with this extension, so one happy customer. I did have to google how to install it though I never knew you had to take the top off and hidden inside was the screw part. Also I have found it harder to PA than when its not there. I am not sure why this is I find when adjusting the bolts it requires a lot more input that could be the plastic pin used, but will need a bit of trial and error hence why marking down to 4, but overall a big improvement. FLO first class as always.


Rating (max 5):  
HEQ5 ext tube
31 August 2024  | 

Perfect fit and FAST delivery to the US!


Rating (max 5):  
Built like a tank!
03 November 2023  | 

This is a solid piece of kit, built for strength and stability over lightweight portability.
It does a great job of raising your scope, very useful if you have a problem with a long scope hitting tripod legs with targets close to zenith like I have. It's probably useful for tall people doing visual astronomy with refractors, SCT's and the like.
Extra height and clearance without compromise.


Rating (max 5):  
Very useful
02 November 2023  | 

Very quick shipping. Fits perfectly. As a side note the diameter and bolt spacing are the same as the 8" EQ6R pier so if you happen to own both the ends are interchangeable depending on the mount. I use both on Skywatcher and Twilight tripods.


Rating (max 5):  
Sky Watcher Extension Tube
25 September 2023  | 

Remarkable how fast my purchase was delivered to Palomar Mountain, CA. The extension tube fit onto my CG4 mount perfectly, no hassle set up what so ever
Thank you FLO.


Rating (max 5):  
Skywatcher extension for mount
18 September 2023  | 

Delivered really quickly and perfect for what I need it for thankyou


Rating (max 5):  
Sky watcher extension tube
01 July 2023  | 

Purchased for my HEQ5. Was astounded at how quickly the order arrived - less than a week from UK to the U.S. I have experienced longer waits for products from U.S. suppliers. Outstanding service. Extension tube was easy to install even though no instructions were included. Works great!


Rating (max 5):  
Pier extension sky watcher
20 May 2023  | 

Very useful and excellent finish


Rating (max 5):  
Telescope hitting tripod
26 February 2023  | 

I have an EQ5 pro mount. My telescope is long so that so that I have to set limits in EQASCOM way short of the meridian otherwise the telescope will hit the tripod. The extension has totally solved this problem. It is very robust and provides a very secure attachment between the tripod and head. It is longer than I need so I may reduce the length sometime in the future.


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