ZWO Mini Guide Scope
ZWO Mini Guide ScopeZWO Mini Guide ScopeZWO Mini Guide ScopeZWO Mini Guide Scope

ZWO Mini Guide Scope

  (9 Reviews)
✓ 2 year warranty


21x in stock shipped 1-2 working days

About this product

Model:  zwo_mini_guidescope
Part Number:  ZWO-30F4

New ZWO Mini Guide Scope

ZWO ultra-compact guide-scope with 30mm f4 objective lens and rotating helical focuser. 

Compatible with all ZWO ASI cameras. 

20mm focus travel.

Fits most telescope finder-shoe bases including Sky-Watcher, Celestron, Orion, Baader and Prima-Luce.

Note: Camera not included ;-)


  • Lens Diameter: 30 mm
  • Focal Length: 120 mm
  • Weight (include guider ring and dovetail): 500 g
  • Back Focus: adjustable,(0~20 mm)
  • Focuser Type: front part focuser
  • Tube travel: 20 mm
  • Dovetail includes 1/4″ screw hole.


Customer reviews

Average Rating (9 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Nice quality for price
Monday, 12 July 2021  | 

Was pleasantly surprised when this turned up. It's perfect for a compact wide-field rig and feels really good quality.
It hasn't had first light yet but I get the feeling it is going to be much easier to focus than my other guide-scopes as it has a focuser. Can't be beaten for the price in my opinion.

Rating (max 5):  
Very good little product
Friday, 15 January 2021  | 

There are not many items in astrophotography that are cheap, effective and good to look at, but this is. Its well made, simple to use, works really well and for small focal length systems, I am not going to bother looking at anything else from now on. Even my old trusty ST80 has been put on the shelf. An ASI120 fitted straight on, it was easy to focus and holds focus well from the outings it has had, and because it is so small, it just makes guiding that much less of a hassle. Highly recommended and will buy another without worrying a jot for any other shortish FL system.

Rating (max 5):  
Nice scope but supplied thumbscrews are incorrect size
Friday, 18 December 2020  | 

Guide scope works well with the ZWO ASI 120 mini camera. However, the thumbscrews supplied with the guide scope were far too big and don't fit into the holes provided. I had to borrow the correct 2mm screws from a friends Celestron just to try it out.


Hi Derek, please contact us and we will supply replacements :-)

Rating (max 5):  
Fantastic little guide scope
Monday, 4 November 2019  | 

Tried this for the first time with a ZWO ASI290MM. Makes a perfect paring with the SpaceCat 51, (or RedCat 51) once camera installed and focus achieved, there's a locking right that holds focus, so between sessions there's no problems with focus getting lost. It's small light, and was easily able to pick up stars for guiding. It's a great piece of kit for any astro photographer.

Rating (max 5):  
ZWO Mini Guide Scope
Friday, 27 September 2019  | 

Excellent little scope for guiding.
I use it with my Redcat 51 is a perfect match !

Rating (max 5):  
Small but good
Tuesday, 12 March 2019  | 

Not yet tried this small guidescope, but I am quite confident it will do a good job. What it has done for me, is lighten the load on my mount. Balance is now very easy to create, and that is so important. I'm sure my lodestar guide cam. will be a good partner for the little fellow, and I envisage no problems at all.

Rating (max 5):  
Monday, 22 October 2018  | 

Fast and reliable. And quite cheap now (before Brexit). Highly recommended.

Rating (max 5):  
Ideal for use as a guidescope or finderscope
Tuesday, 25 September 2018  | 

The ZWO Mini Guide Scope is well built and reasonably priced. I purchased one for use as a solar scope in a Raspberry Pi based project I'm currently designing. The small 30mm objective is fine for solar work, though at F4 focussing needs to be very precise and this can be quite difficult as the objective part of the scope is turned to achieve focus. The whole unit is made from metal, so it does feel sturdy. It would make a great little finderscope or lightweight guidescope.

Rating (max 5):  
Nice Compact Guide Scope
Friday, 27 July 2018  | 

Using this on my WO61 and the red it a great match for it. The scope is very nice quality and very compact, perfect with the ZWO120MM attached.


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