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.
Omegon
Microspeed guidescope, 50mm
$ 159.00
Omegon
Guidescope Microspeed guide scope, 60mm
$ 179.00
ZWO
Guidescope 30mm mini
RRP:
$ 166.00
Our price:
$ 161.00
Omegon
Guidescope module finder
$ 99.00
Omegon
Off-Axis-Guider Advanced T2
$ 139.00
William Optics
Guidescope UniGuide 32mm Red
$ 176.00
Omegon
Basic Guiding rings 105 mm
$ 29.90
Omegon
Off-Axis-Guider with microfocus
$ 209.00
William Optics
Guidescope UniGuide 50mm Red
$ 218.00
ZWO
Off-Axis-Guider OAG-L
RRP:
$ 259.00
Our price:
$ 240.00
Skywatcher
Guidescope Evoguide 50 ED
RRP:
$ 297.00
Our price:
$ 270.00
Celestron
Off-Axis-Guider Deluxe
$ 436.00
William Optics
Guidescope Guide Star Apo61
$ 690.00
Omegon
guide scope ring clamps
$ 149.00
William Optics
Guidescope UniGuide 32mm Gold
$ 176.00
ProAstroGear
Black-CAT-51 mount for ZWO ASIAIR, EAF and guidescope
$ 58.00
TS Optics
Guidescope Deluxe 60 mm Guiding/Finder scope with micro focusing
$ 198.00
Tecnosky
Guidescope 32mm
$ 93.00
Omegon
guide scope mount
$ 229.00
ASToptics
CNC guide scope rings, 80mm
$ 93.00
ASToptics
CNC Guidescope Rings 90mm w/Raiser blocks
$ 103.00
iOptron
Guidescope iGuide 30mm
$ 145.00
ASToptics
Guidescope MINI guide-scope I 30mm - ultra lightweight
$ 166.00
iOptron
Guidescope iGuider Autoguider System
$ 259.00
William Optics
Guidescope Guide Star Apo 61
$ 690.00
Explore Scientific
Guidescope 8x50 Helikal T2/1.25"
RRP:
$ 207.00
Our price:
$ 176.00
Losmandy
Guide scope rings with quick-release connector, 160mm
$ 301.00
Lumicon
Off-Axis-Guider Easy 1.25"
$ 484.00
iOptron
iGuider mouting bracket and rails
$ 51.00
Skywatcher
Guide scope mount
$ 249.00
William Optics
Guidescope AC 50/200 RotoLock Gold OTA
$ 197.00
Askar
Off-Axis-Guider T2/M48/M54
$ 286.00
William Optics
Guidescope Guide Star Apo 61
$ 690.00
ASToptics
CNC Guidescope Ring 127mm + Vixen Clamp
$ 124.00
ProAstroGear
Black-CAT-71 mount for ZWO ASIAIR, EAF and guidescope
$ 58.00
ASToptics
CNC Guidescope Ring 90mm + Vixen Clamp
$ 103.00
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.