5 Best Guide Scopes for Telescopes (November 2026)
The best telescope guide scopes include the SVBONY SV106 Guide Scope Finder Scope 60mm for flexible camera and finder use, the SVBONY SV165 Guide Scope for a compact guiding setup, and the Sky-Watcher Sky-Watcher EvoGuide 50DX for included mounting choices.
On this page (7 sections)
- How to choose the best guide scope for telescope imaging
- Which guide scope features matter most?
- How we compared these telescope guide scopes
- Best guide scopes for telescope imaging rigs
- Can you use a guide scope as a finder?
- What should you check before mounting a guide scope?
- Which telescope guide scope should you choose?
The SVBONY SV106 Guide Scope Finder Scope 60mm is the best guide scope for many telescope imaging rigs because it combines a helical focuser, extra drawtube travel and male T-threads for compatible cameras. Choose the SV165 when a compact 30mm scope fits your setup, or the EvoGuide 50DX when its included mounting adapters suit your telescope.
A guide scope works alongside the main imaging telescope. An autoguiding camera looks through it at a guide star, so the guiding setup can help keep the target aligned during an exposure.
Start with compatibility. The camera must attach securely and reach focus, and the guide scope needs a stable way to sit parallel to the main optical tube.
Before choosing a scope, check your camera connection, mounting shoe or rail, tube clearance and focuser travel.
If you are planning a wider setup, our telescope parts and accessories guide covers how common components fit together. For capturing a view through your main scope with a phone, see our best telescope lens for phone guide.
Our picks at a glance
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1
Best for flexible camera and finder useSVBONY SV106 Guide Scope Finder Scope 60mm
9.7/10 our score
See it on Amazon -
2
-
3
Best for included mounting choicesSky-Watcher Sky-Watcher EvoGuide 50DX
9.3/10 our score
See it on Amazon
- 4
Check itAstromania Adjustable Guide Scope Ring Set
Best for adjustable scope alignment - 5
Check itAstromania Guide Scope Finder Scope 60mm FMC
Best for a complete 60mm scope kit
How to choose the best guide scope for telescope imaging
The best guide scope for telescope imaging is one that can focus your camera and attach securely to your particular rig. Aperture and focal length help describe the scope, but they do not replace checking the camera interface and mounting hardware.
First, check how your autoguiding camera connects. A camera may use a 1.25 in barrel or a threaded connection, and some setups need an adapter between the camera and scope.
The SV106 and Astromania 60mm have male T-threads for compatible cameras with female T-threads. The SV165 has 1.25 in and M42 interfaces, while the EvoGuide 50DX includes a 1.25 in helical focuser.
Next, check how you will attach the scope. A finder shoe, a V-style rail and adjustable rings are different mounting arrangements.
The SV106 description notes compatibility with many Synta, Orion and Sky-Watcher-style finder shoes and clamps. The EvoGuide 50DX includes a finder stalk and a V-style rail.
The Astromania ring set is a separate alignment accessory, not an optical scope.
Focus travel matters because a camera that sits too far in or out may not reach focus. The SV106 has 8mm of helical focus travel and a telescoping drawtube with up to 35mm of additional back-travel.
The SV165 has a 45mm back focus distance, but some camera models may need extra accessories to focus.
If you also need to bring the main telescope into sharp focus, our best telescope focusing mask guide explains a separate tool for that task. A focusing mask doesn't replace the guide scope or its camera.
Which guide scope features matter most?
Camera fit, focus adjustment and mounting compatibility matter more than a long feature list. Compare those needs first, then decide whether you want to use the guide scope as a visual finder too.
For a simpler aiming aid, compare red dot finders for telescopes.
A helical focuser moves the attached camera or eyepiece inward or outward while keeping its orientation. That can be useful when adjusting focus without rotating the camera.
Both 60mm scopes here have helical focusers, and the SV106 also has a sliding drawtube for coarse focus.
The SV165 is the smallest listed option, with 30mm achromatic optics and a 120mm focal length. Its maker describes a 45mm back focus distance and compatibility with common autoguiding camera brands, including ZWO and QHY.
Check the camera model and any required adapters before assuming it will focus.
The EvoGuide 50DX is a 50mm apochromatic doublet refractor with a 242mm focal length and a 1.25 in helical focuser. It includes a finder stalk and V-style mounting plate, which gives you two ways to attach it if your rig supports them.
Some guide scopes can double as finders with a suitable eyepiece. The SV106 can be used with an optional 1.25 in eyepiece, while the Astromania 60mm is also described for finder use.
Check whether the eyepiece you need is included and whether the resulting view works for your observing routine.
For a finder made specifically for locating targets on Celestron setups, compare our best Celestron telescope finder scope picks. Finder scopes and guide scopes can overlap in use, but make sure the connection and optical arrangement meet your intended job.
How we compared these telescope guide scopes
We compared camera interfaces, focus features, optical size and mounting options against the needs of autoguiding rigs. Our score weighs specs and features against what you need from a guide scope, including whether the scope can serve as a finder or needs separate mounting hardware.
A higher score here reflects a closer fit for common guide-scope needs, not a claim that one scope works with every camera or telescope. Compatibility depends on the rest of your setup, including adapters, focus position and mount.
The five choices cover three optical guide scopes and one adjustable ring set. The ring set is included because mounting and alignment are part of building a usable guiding system, but it does not replace a guide scope or camera.
Before ordering, compare the stated dimensions and interfaces with your equipment. If you are assembling a full accessory kit for a specific telescope, our best Celestron NexStar 8SE accessories guide may help with other parts of that setup.
| Product | Best for | Aperture | Focal length | Focusing | Our score |
|---|---|---|---|---|---|
| SVBONY SV106 Guide Scope Finder Scope 60mm | flexible camera and finder use | 60mm | 240mm | Helical focuser with 8mm travel and telescoping drawtube | 9.7 |
| SVBONY SV165 Guide Scope | a compact guiding setup | 30mm | 120mm | Manual focus | 9.6 |
| Sky-Watcher Sky-Watcher EvoGuide 50DX | included mounting choices | 50mm | 242mm | 1.25 in helical focuser | 9.3 |
| Astromania Adjustable Guide Scope Ring Set | adjustable scope alignment | 9.0 | |||
| Astromania Guide Scope Finder Scope 60mm FMC | a complete 60mm scope kit | 60mm | 240mm | Helical focuser and scaled drawtube | 8.7 |
Best guide scopes for telescope imaging rigs
The SV106 is the most flexible choice here for camera and finder use, while the SV165 suits compact rigs and the EvoGuide 50DX offers two included mounting adapters. Pick the scope that matches your camera and mount before weighing secondary features.
SVBONY SV106 Guide Scope Finder Scope 60mm: Best for flexible camera and finder use
- 60mm aperture
- Helical focuser
- Up to 35mm additional back-travel
- Male T-threads
The helical focuser and male T-threads support a direct camera setup for compatible autoguiders. With a suitable 1.25 in eyepiece, it can also serve as a straight-through finder.
Pros
- Camera orientation stays steady during helical focus adjustments
- Compression ring helps protect inserted accessories
- Can serve as a finder with a suitable eyepiece
Cons
- Confirm your camera's thread and focus needs
- The eyepiece is optional
The SV106 is a strong fit when you want one scope for guiding and occasional finder use. Its helical focuser keeps an attached camera's orientation steady during focus adjustments, and the telescoping drawtube provides up to 35mm of additional back-travel if your autoguider needs it.
The focuser has 8mm of helical travel. Male T-threads on the focuser collar support cameras with a matching female T-thread, while a compression ring helps protect inserted cameras or eyepieces from scratches.
With an optional 1.25 in eyepiece, the scope can also work as a straight-through finder. The SV106 description gives a 25mm eyepiece as an example that creates a 9.6x60 finder, and says an illuminated centering eyepiece can be used for aiming.
The scope is described as compatible with many Synta, Orion and Sky-Watcher-style finder shoes and clamps. Confirm that your camera can reach focus and that your telescope's mount can hold the scope securely.
Choose it for a rig that benefits from adjustable focus and both camera and finder use. If you want a smaller optical tube, compare the SV165 below.
SVBONY SV165 Guide Scope: Best for a compact guiding setup
- 30mm achromatic optics
- 45mm back focus distance
- 1.25 in and M42 interfaces
- Nylon-tipped mounting screws
This compact guide scope is designed to pair with mainstream autoguiding cameras. Its 1.25 in and M42 interfaces suit compatible camera setups, though some cameras may need extra accessories to reach focus.
Pros
- Small 30mm optical format
- 45mm back focus distance
- Mounting screws have nylon tips
Cons
- Some camera models need extra focusing accessories
- It will not focus with a dielectric mirror star diagonal
The SV165 suits an imaging setup where a compact guide scope is a priority. Its 30mm achromatic optics and 120mm focal length make it the smallest optical option in this group.
The scope has 1.25 in and M42 interfaces intended for compatible autoguiding cameras. Its stated 45mm back focus distance supports focus adjustments, though some camera models may need extra accessories to reach focus.
The mounting rings have nylon-tipped screws, which help avoid scratching the scope tube as you position it. The SV165 also fits many telescope finder-shoe bases, according to its description.
There are compatibility limits to check. It will not focus with a dielectric mirror star diagonal, and an eyepiece view is inverted.
For guiding, confirm the camera interface and focus needs before you mount the scope and begin adjusting.
Choose it for a compact guide scope and a compatible camera setup. If your camera does not reach focus with the available arrangement, plan for the required accessory or choose a scope with a different focusing setup.
Sky-Watcher Sky-Watcher EvoGuide 50DX: Best for included mounting choices
- 50mm apochromatic doublet
- 242mm focal length
- Finder stalk and V-style rail
- Optional adapter for astrograph use
The EvoGuide 50DX includes both a finder stalk and a V-style mounting rail. Its 1.25 in helical focuser and 242mm focal length make it a distinct option for imaging rigs that need flexible mounting.
Pros
- Two included mounting adapters
- 1.25 in helical focuser
- Can become a low-focal-length astrograph with an optional adapter
Cons
- Astrograph use requires an optional adapter
- Check the included mount against your telescope's bracket
The EvoGuide 50DX stands out for its included mounting choices. Its finder stalk and V-style mounting rail give you two attachment options, provided your telescope or rings accept one of them.
This 50mm apochromatic doublet refractor has a 242mm focal length and a 1.25 in helical focuser. Sky-Watcher describes it as using matched ED glass, and the scope is designed for guiding as well as visual observing.
The EvoGuide can also be adapted into a low-focal-length astrograph with an optional adapter. That adapter is not included, so treat astrograph use as an added setup step rather than a ready-to-use feature.
Check your rig's bracket before buying. A guide scope's included stalk or rail only helps if the main telescope or mounting rings can accept it, and your camera still needs a compatible connection and focus position.
Choose it when the included stalk or rail fits your mount and you want a 50mm guide scope. If you need a smaller scope, the SV165 is more compact.
Astromania Adjustable Guide Scope Ring Set: Best for adjustable scope alignment
- 69mm inside diameter
- Pair of adjustable metal rings
- Teflon-inlay adjustment screws
- Synta-style dovetail bar
These rings help mount a compact guide scope parallel to the main telescope while allowing adjustment to center a guide star. Check your guide scope tube diameter and mounting arrangement before choosing them.
Pros
- Adjustable alignment
- Teflon inlays help avoid scratches and pressure marks
- Dovetail bar has M6 holes and a 1/4 in-20 thread
Cons
- Rings fit telescope tubes from 43mm to 68mm in diameter
- Not a guide scope or autoguiding camera
The Astromania Adjustable Guide Scope Ring Set is an alignment accessory for a compatible small or medium guide scope. Its two adjustable rings and Synta-style dovetail bar help hold a guide scope parallel to the main telescope while you center a guide star.
The rings have a 69mm inside diameter, and their adjustment screws have Teflon inlays. The set is described for telescope tubes from 43mm to 68mm in diameter, so measure the tube you intend to mount before choosing it.
The dovetail bar has M6 through-holes on both sides and a center 1/4 in-20 thread. Those connection points give you options for adapting the rings, but you still need to confirm they fit your telescope and guide scope arrangement.
This is not a standalone guide scope. Pair it with an optical tube and compatible camera, and check that the ring spacing and attachment points work with your rig.
Choose it when your guide scope needs adjustable alignment and its tube fits the rings. If you need a complete optical scope, choose one of the other picks.
Astromania Guide Scope Finder Scope 60mm FMC: Best for a complete 60mm scope kit
- 60mm lens
- Helical focuser
- Guide scope rings and dovetail bar
- Male T-threads
This 60mm option combines a helical focuser with guide scope rings and a dovetail mounting bar. Its male T-threads support compatible autoguiding cameras, while the 1.25 in eyepiece compatibility also suits finder use.
Pros
- Includes rings and dovetail bar
- Focus adjustments help avoid rotating the camera
- Can serve as a visual finder
Cons
- Check the included ring fit against your telescope tube
- Confirm the camera connection and focus requirements
The Astromania 60mm FMC is a complete guide-scope option with rings and a dovetail bar included. Its helical focuser and male T-threads support compatible autoguiding cameras, while the scope can also serve as a visual finder with a suitable eyepiece.
It has a 240mm focal length and a 60mm lens. The focuser combines fine helical adjustment with a scaled drawtube, giving you two ways to set focus while keeping the camera or eyepiece from rotating during adjustment.
The included rings have an 80mm inner diameter and are described for telescope tubes from 53mm to 79mm. Check those dimensions against your telescope and make sure the dovetail mounting arrangement matches your setup.
The scope's 1.25 in eyepiece compatibility can be useful if you want finder use as well as guiding. Confirm which eyepiece and camera adapters you need before buying, since the setup depends on your chosen accessories.
Choose it for a 60mm scope kit with rings and a dovetail bar. If your rig needs a more compact optical tube, compare the SV165 instead.
Can you use a guide scope as a finder?
Yes, some guide scopes can also serve as finders when you add a compatible eyepiece. The SV106 and Astromania 60mm are described for both visual finder use and autoguiding.
Finder use depends on the eyepiece interface and whether you have the eyepiece you need. The SV106 accepts an optional 1.25 in eyepiece, and the Astromania 60mm is described as compatible with a 1.25 in telescope eyepiece.
An autoguiding camera and a finder eyepiece do different jobs. The camera connects to the guiding setup, while the eyepiece lets you look through the scope to aim.
You may need to swap accessories when changing between those uses.
If you want a basic overview of a different kind of compact viewing instrument, read What Is a Spotting Scope? A Simple Guide.
A spotting scope and a telescope guide scope serve different roles, so choose based on the equipment you want to use.
What should you check before mounting a guide scope?
Check tube diameter, bracket type and clearance before tightening the guide scope onto your imaging rig. A scope that fits the camera but cannot mount securely is not ready to guide.
The SV106 is described as fitting many finder shoes and clamps, while the EvoGuide 50DX includes its own finder stalk and V-style rail. The Astromania ring set has its own tube-size limits and attachment points, so compare those with both optical tubes.
Once mounted, the guide scope needs to stay aligned with the main telescope. Adjustable rings can help you center a guide star, but avoid overtightening screws against a tube or forcing an incompatible bracket into place.
For setup basics before moving on to imaging, our beginner's guide to using a telescope walks through the main parts and how to aim. When keeping optics clean, use a method suited to the lens, such as the steps in our best telescope lens cleaning kit guide.
Which telescope guide scope should you choose?
Choose the SV106 if you want a 60mm scope with helical focus, extra drawtube travel and both camera and finder options. Choose the SV165 for a compact 30mm setup, or the EvoGuide 50DX when its finder stalk or V-style rail fits your mount.
If you already have a guide scope and need alignment hardware, the Astromania ring set is the relevant choice, provided your tube fits its stated range. The Astromania 60mm kit is another option when you want a 60mm scope with rings and a dovetail bar included.
For any of these picks, verify the camera interface and focus requirements with your exact equipment before ordering. A guide scope works best when the camera reaches focus and the mount holds it securely alongside the imaging telescope. <<<
Our top 3 picks at a glance
-
1
Best for flexible camera and finder use
SVBONY SV106 Guide Scope Finder Scope 60mm
9.7/10 our score
See it on Amazon -
2
-
3
Best for included mounting choices
Sky-Watcher Sky-Watcher EvoGuide 50DX
9.3/10 our score
See it on Amazon
Frequently asked questions
What does a guide scope do on a telescope?
A guide scope gives an autoguiding camera a view of a guide star while a separate main telescope captures an image. The camera and guiding system use that star to help keep the imaging target aligned during an exposure.
The scope needs a suitable camera connection, enough focus travel, and a mount that holds it steadily alongside the main telescope.
How do I choose a guide scope for my telescope?
Match the guide scope's camera interface and focus range to your autoguiding camera, then check how it mounts to your imaging rig. A compact 30mm scope can suit a smaller setup, while 50mm and 60mm choices offer different optical and mounting features.
Confirm compatibility before buying.
Can a guide scope also work as a finder?
Some guide scopes can also work as visual finders when used with a compatible eyepiece. The SV106 and Astromania 60mm options are described for both autoguiding and finder use.
Check whether the eyepiece is included, and remember that an eyepiece view may be inverted on some scopes.
Do I need adjustable guide scope rings?
Adjustable rings can help align a guide scope parallel to the main telescope and center a guide star. They are useful when the scope and mount arrangement allow adjustment, but they are separate from the guide scope and camera.
Check the ring diameter, tube size and dovetail fit first.
What should I check before connecting an autoguiding camera?
Check the camera's thread or barrel size, the guide scope's interface and the available back-focus or focuser travel. Some camera and scope combinations need an extra adapter to reach focus.
For example, some camera models used with the SV165 may require additional focusing accessories.
