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Under Guiding, you will find mechanical and optical accessories that support the tracking control of an astronomical mount. These are mainly guidescopes and off-axis guiders.

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William Optics Guidescope UniGuide 50mm Red
William Optics
Guidescope UniGuide 50mm Red
$ 220.00
ready for shipping in 24 h
Omegon Microspeed guidescope, 50mm
Omegon
Microspeed guidescope, 50mm
( 3.5 / 5 )
$ 159.00
ready for shipping in 24 h
William Optics Guidescope UniGuide 32mm Red
William Optics
Guidescope UniGuide 32mm Red
$ 178.00
ready for shipping in 24 h
Omegon Guidescope Microspeed guide scope, 60mm
Omegon
Guidescope Microspeed guide scope, 60mm
$ 179.00
ready for shipping in 24 h
ZWO Guidescope 30mm mini
ZWO
Guidescope 30mm mini
RRP:  $ 167.00
Our price:
$ 161.00
ready for shipping in 3-5 weeks
Omegon Guidescope module finder
Omegon
Guidescope module finder
$ 99.00
ready for shipping in 24 h
William Optics Guidescope Guide Star Apo 61
William Optics
Guidescope Guide Star Apo 61
$ 700.00
ready for shipping in 24 h
William Optics Guidescope Guide Star Apo61
William Optics
Guidescope Guide Star Apo61
$ 700.00
ready for shipping in 24 h
Omegon Off-Axis-Guider with microfocus
Omegon
Off-Axis-Guider with microfocus
$ 209.00
ready for shipping in 24 h
ZWO Off-Axis-Guider OAG-L
ZWO
Off-Axis-Guider OAG-L
RRP:  $ 262.00
Our price:
$ 240.00
ready for shipping in 3-5 weeks
William Optics Guidescope Guide Star Apo 61
William Optics
Guidescope Guide Star Apo 61
$ 700.00
ready for shipping in 3-5 weeks
William Optics Guidescope UniGuide 32mm Gold
William Optics
Guidescope UniGuide 32mm Gold
$ 178.00
ready for shipping in 24 h
ASToptics CNC Guidescope Rings 90mm w/Raiser blocks
ASToptics
CNC Guidescope Rings 90mm w/Raiser blocks
$ 104.00
ready for shipping in 24 h
Omegon Off-Axis-Guider Advanced T2
Omegon
Off-Axis-Guider Advanced T2
$ 139.00
ready for shipping in 24 h
Skywatcher Guidescope Evoguide 50 ED
Skywatcher
Guidescope Evoguide 50 ED
( 5 / 5 )
RRP:  $ 300.00
Our price:
$ 272.00
ready for shipping in 24 h
Optec Off-Axis-Guider Sagitta Off-Axis Guider motorised
Optec
Off-Axis-Guider Sagitta Off-Axis Guider motorised
$ 1,670.00
ready for shipping in 6-10 weeks
ASToptics CNC guide scope rings, 80mm
ASToptics
CNC guide scope rings, 80mm
$ 94.00
ready for shipping in 24 h
iOptron Guidescope iGuide 30mm
iOptron
Guidescope iGuide 30mm
( 5 / 5 )
$ 146.00
ready for shipping in 24 h
Celestron Off-Axis-Guider Deluxe
Celestron
Off-Axis-Guider Deluxe
$ 440.00
ready for shipping in 24 h
Omegon guide scope mount
Omegon
guide scope mount
$ 229.00
ready for shipping in 24 h
Lumicon Off-Axis-Guider Easy 1.25"
Lumicon
Off-Axis-Guider Easy 1.25"
$ 488.00
ready for shipping in 24 h
Losmandy Guide scope rings with quick-release connector, 160mm
Losmandy
Guide scope rings with quick-release connector, 160mm
$ 304.00
ready for shipping in 24 h
Askar Off-Axis-Guider T2/M48/M54
Askar
Off-Axis-Guider T2/M48/M54
$ 289.00
ready for shipping in 24 h
William Optics Guidescope AC 50/200 RotoLock Gold OTA
William Optics
Guidescope AC 50/200 RotoLock Gold OTA
$ 199.00
ready for shipping in 24 h
Omegon guide scope ring clamps
Omegon
guide scope ring clamps
$ 149.00
ready for shipping in 24 h
ASToptics Guidescope MINI guide-scope I 30mm - ultra lightweight
ASToptics
Guidescope MINI guide-scope I 30mm - ultra lightweight
$ 167.00
ready for shipping in 24 h
Artesky Guidescope UltraGuide 70mm
Artesky
Guidescope UltraGuide 70mm
( 3 / 5 )
$ 250.00
Product can be shipped as of 15.12.2024
ASToptics CNC guide-scope rings, 127mm
ASToptics
CNC guide-scope rings, 127mm
$ 125.00
ready for shipping in 3-5 weeks
Explore Scientific Guidescope 10x60 Helikal T2/1.25"
Explore Scientific
Guidescope 10x60 Helikal T2/1.25"
RRP:  $ 251.00
Our price:
$ 199.00
ready for shipping in 24 h
Optec Off-Axis-Guider Sagitta Off-Axis Guider manual
Optec
Off-Axis-Guider Sagitta Off-Axis Guider manual
$ 1,050.00
ready for shipping in 6-10 weeks
Explore Scientific Guidescope 8x50 Helikal T2/1.25"
Explore Scientific
Guidescope 8x50 Helikal T2/1.25"
RRP:  $ 209.00
Our price:
$ 178.00
ready for shipping in 1-2 weeks
William Optics Guidescope AC 50/200 RotoLock Red OTA
William Optics
Guidescope AC 50/200 RotoLock Red OTA
$ 209.00
ready for shipping in 3-5 weeks
Omegon Basic Guiding rings 105 mm
Omegon
Basic Guiding rings 105 mm
( 5 / 5 )
$ 29.90
ready for shipping in 24 h
PegasusAstro Off-Axis-Guider Scops OAG
PegasusAstro
Off-Axis-Guider Scops OAG
$ 660.00
ready for shipping in 1-2 weeks
ASToptics CNC Guidescope Ring 127mm + Vixen Clamp
ASToptics
CNC Guidescope Ring 127mm + Vixen Clamp
$ 125.00
ready for shipping in 24 h
PrimaLuceLab Compact Guidescope 60mm
PrimaLuceLab
Compact Guidescope 60mm
$ 211.00
ready for shipping in 1-2 weeks

Motorised astronomical mounts compensate for the effect of celestial rotation on the telescope. This way, the telescope remains aligned to a selected object for hours at a time. For this to work, the mount must be positioned precisely. For example, the right ascension axis of an equatorial mount must point as precisely as possible to the celestial pole.

In astrophotography, however, it is not enough to set up the mount as precisely as possible. Depending on the exposure time, the mount’s mechanical inaccuracies may become noticeable. The longer the exposure time, the greater the effect. The mount’s operation must be constantly monitored and corrected. For this purpose, guiding accessories such as a guidescope with guidescope rings or an off-axis guider are required.

If the correction of the mount is done automatically, it is known as autoguiding. For this, you need a camera which continually sends control pulses to the mount over a feedback loop. Suitable cameras can be found here in the category astro-cameras.

The image shows a guidescope mounted parallel to the telescope. The blue camera is aligned with a guide star. It sends control pulses to the mount via a connected computer. The image shows a guidescope mounted parallel to the telescope. The blue camera is aligned with a guide star. It sends control pulses to the mount via a connected computer.