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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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TS Optics Guidescope 50mm 1,25"
TS Optics
Guidescope 50mm 1,25"
Our price:
RRP:  $ 116.00
$ 101.00
ready for shipping in 1-2 weeks
Omegon Finder Plate for 72/400
Omegon
Finder Plate for 72/400
Our price:
RRP:  $ 49.90
$ 29.90
ready for shipping in 24 h
Askar Off-Axis-Guider T2/M48/M54
Askar
Off-Axis-Guider T2/M48/M54
$ 264.00
ready for shipping in 1-2 weeks
Omegon Finder Plate for 108/600
Omegon
Finder Plate for 108/600
Our price:
RRP:  $ 69.00
$ 39.90
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
Omegon guide scope ring clamps
Omegon
guide scope ring clamps
$ 149.00
ready for shipping in 24 h
Omegon guide scope mount
Omegon
guide scope mount
$ 229.00
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
ASToptics CNC Guidescope Rings 90mm w/Raiser blocks
ASToptics
CNC Guidescope Rings 90mm w/Raiser blocks
$ 105.00
ready for shipping in 24 h
ASToptics CNC guide-scope rings, 127mm
ASToptics
CNC guide-scope rings, 127mm
$ 126.00
ready for shipping in 24 h
ASToptics CNC guide scope rings, 80mm
ASToptics
CNC guide scope rings, 80mm
$ 94.00
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
Omegon Guidescope module finder
Omegon
Guidescope module finder
$ 99.00
ready for shipping in 24 h
Omegon Basic Guiding rings 105 mm
Omegon
Basic Guiding rings 105 mm
( 5 / 5 )
$ 29.90
ready for shipping in 24 h
Omegon Off-Axis-Guider Off-Axis Guider with microfocus
Omegon
Off-Axis-Guider Off-Axis Guider with microfocus
$ 209.00
ready for shipping in 24 h
ASToptics CNC Guidescope Ring 90mm + Vixen Clamp
ASToptics
CNC Guidescope Ring 90mm + Vixen Clamp
$ 105.00
ready for shipping in 24 h
ASToptics CNC guide-scope rings, 90mm
ASToptics
CNC guide-scope rings, 90mm
$ 94.00
ready for shipping in 24 h
William Optics Guidescope UniGuide 32mm Red
William Optics
Guidescope UniGuide 32mm Red
$ 179.00
ready for shipping in 24 h
TS Optics Guide scope rings 150mm
TS Optics
Guide scope rings 150mm
$ 84.00
ready for shipping in 1-2 weeks
William Optics Guidescope UniGuide 32mm Space Grey
William Optics
Guidescope UniGuide 32mm Space Grey
$ 168.00
ready for shipping in 24 h
William Optics Guidescope UniGuide 50mm Space Grey
William Optics
Guidescope UniGuide 50mm Space Grey
$ 211.00
ready for shipping in 24 h
Losmandy Guide scope rings with quick-release connector, 160mm
Losmandy
Guide scope rings with quick-release connector, 160mm
Sale price:
$ 306.00
$ 189.01
ready for shipping in 24 h
Lunatico Tube ring clamps, 80mm, for 18mm DuoScope One-T counterweight rod
Lunatico
Tube ring clamps, 80mm, for 18mm DuoScope One-T counterweight rod
$ 179.00
ready for shipping in 1-2 weeks
iOptron Guidescope iGuide Set
iOptron
Guidescope iGuide Set
$ 358.00
ready for shipping in 24 h
ADM Guide scope rings 150 mm
ADM
Guide scope rings 150 mm
$ 263.00
ready for shipping in 3-5 weeks
William Optics Guidescope UniGuide 50mm Gold
William Optics
Guidescope UniGuide 50mm Gold
$ 232.00
ready for shipping in 24 h
ADM Guide scope rings 75mm
ADM
Guide scope rings 75mm
$ 200.00
ready for shipping in 3-5 weeks
William Optics Guidescope UniGuide 32mm Gold
William Optics
Guidescope UniGuide 32mm Gold
$ 179.00
ready for shipping in 24 h
ADM Guide scope rings 150 mm
ADM
Guide scope rings 150 mm
$ 232.00
ready for shipping in 3-5 weeks
ADM Guide scope rings Set 100mm
ADM
Guide scope rings Set 100mm
$ 232.00
ready for shipping in 3-5 weeks
ADM Guide scope rings 125 mm
ADM
Guide scope rings 125 mm
$ 232.00
ready for shipping in 3-5 weeks
William Optics Guidescope AC 50/200 RotoLock Gold OTA
William Optics
Guidescope AC 50/200 RotoLock Gold OTA
$ 200.00
ready for shipping in 24 h
William Optics Guidescope AC 50/200 RotoLock Red OTA
William Optics
Guidescope AC 50/200 RotoLock Red OTA
$ 221.00
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
ADM Guide scope rings 125mm
ADM
Guide scope rings 125mm
$ 211.00
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

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.