Skip to content

ZWO Cameras 10% Off!

Guiding, Centering & Adaptive Optics

10 Items
SX Lodestar X2 Autoguider

Starlight Xpress Lodestar X2 Autoguider - Monochrome - LXLODESTAR-M

SKU: SLX-LXLODESTAR-M
  • Color or Monochrome Camera: Monochrome
  • Cooled or Uncooled: Uncooled
  • Pixel Array & Resolution: 752 x 582 (0.4 MP)
  • Pixel Size in Microns: 8.2
  • Sensor Model: ICX829 EXview HAD
Free shipping Free shipping
$625.00
SX Lodestar X2 Autoguider

Starlight Xpress Lodestar X2 Autoguider - Color - X2LODESTAR-C

SKU: SLX-X2LODESTAR-C
  • Color or Monochrome Camera: Color
  • Cooled or Uncooled: Uncooled
  • Pixel Array & Resolution: 795 x 596 (0.47 MP)
  • Pixel Size in Microns: 8.4
  • Sensor Model: ICX829 EXview HAD
Available Used from $495.00
Free shipping Free shipping
$625.00
Starlight Xpress Slimline OAG

Starlight Xpress Slimline OAG for USB Filter Wheel with Lodestar - SLFW-OAG

SKU: SLX-SX-SLFW-OAG
  • This Starlight Xpress Ultra Slimline OAG attaches directly to the SX USB Filter Wheel for enhanced guiding accuracy with no flexure.
  • Contributes only 13 mm to the focus wheel's back focus distance.
  • The Ultra Slimline OAG is expressly designed for use with the Starlight Xpress USB Filter Wheel and either the Lodestar, SXV, or SXV-EX autoguider.
  • Adjustable pick-off prism axis helps to maximize guide image quality.
Free shipping Free shipping
$230.00
Starlight Xpress AO/OAG Extension Tube

Starlight Xpress Extension Tube for AO or OAG

SKU: SLX-AO-OAG-EXT
  • Starlight Xpress Extension Tube for the Ultra Slimline Off-Axis Guider or Off-Axis Guider with AOLF Active Optics.
  • Compensates for longer back focus distances exhibited by DSLRs and other cameras from competing brands by allowing you to move the guide camera further away from the OAG prism.
  • This extension tube measures 30 mm in length.
  • Construction consists of black anodized aluminum.
$40.00
Starlight Xpress AO-LF Active Optics - Side View

Starlight Xpress Large Format Active Optics Guiding System with OAG - SXV-AO-LF

SKU: SLX-SXV-AO-LF
  • The Starlight Xpress Large Format Adaptive Optics Guiding System enhances CCD images by efficiently correcting for rapid gear errors common to all but the most expensive mounts.
  • Image tracking and stabilization are enabled via a high speed tip-tilt optical window.
  • Offers fast 5mS per increment tracking speed.
  • Mount control output fixes large drive errors while preserving AO stabilization.
  • Image shift factor is separate from both the optical system and the back focal spacing.
Free shipping Free shipping
$1,700.00
Starlight Xpress AOQSI Active Optics - Shows Optional OAG

Starlight Xpress Large Format Active Optics Guiding System without OAG - SXV-AOQSI

SKU: SLX-SXV-AOQSI
  • Starlight Xpress Large Format Adaptive Optics Guiding System with no Off-Axis Guider for QSI WSG cameras which have an already built-in OAG.
  • Stabilizes even the most troublesome mounts by correcting rapid gear errors.
  • Image tracking and stabilization are enabled via a high speed tip-tilt optical window.
  • Offers fast 5mS per increment tracking speed.
  • Mount control output fixes large drive errors while preserving AO stabilization.
  • Image shift factor is separate from both the optical system and the back focal spacing.
Free shipping Free shipping
$1,400.00
Slimline OAG with Extension Tube

Starlight Xpress Slimline OAG & Extension Tube - SX-UOAG

SKU: SLX-SX-UOAG
  • This Starlight Xpress Ultra Slimline Off-Axis Guider attaches directly to the SX USB Filter Wheel for enhanced guiding accuracy with no flexure.
  • Contributes only 13 mm to the focus wheel's back focus distance.
  • The Ultra Slimline OAG is expressly designed for use with the Starlight Xpress USB Filter Wheel and either the Lodestar, SXV, or SXV-EX autoguider.
  • Adjustable pick-off prism axis helps to maximize guide image quality.
  • Comes with a 30 mm extension tube for modifying the back focus distance when using other cameras.
Free shipping Free shipping
$250.00
Starlight Xpress SuperStar - Front

Starlight Xpress SuperStar High Res Autoguider & CCD Camera - Color

SKU: SLX-SUPERSTAR-C
  • Color or Monochrome Camera: Color
  • Cooled or Uncooled: Uncooled
  • Pixel Array & Resolution: 1392 x 1040 (1.4 MP)
  • Pixel Size in Microns: 4.65
  • Sensor Model: ICX205AL
Free shipping Free shipping
$645.00 $516.00
Starlight Xpress Slimline OAG to AO Adapter

Starlight Xpress Slimline OAG to AO Active Optics Adapter

SKU: SLX-SOAG-AO-APT
  • Use this Starlight Xpress adapter to mount the SX Universal Filter Wheel and Slimline Off-Axis Guider to the back of the Active Optics unit, thus compensating for back focus issues.
  • Eliminates the need for using the standard OAG included with the AO-LF system, enabling the use of the Starlight Xpress Slimline OAG instead.
  • Slimline OAG bolts directly to the front of the filter wheel, making screw thread adapters unnecessary.
  • Combining the Starlight Xpress Slimline OAG and Active Optics unit will greatly improve the accuracy of your astro-imaging system.
$60.00

Starlight Xpress Slimline OAG for Trius Cameras without a Filter Wheel - SXVR-OAG

SKU: SLX-SXVR-OAG
  • Starlight Xpress Slimline Off-Axis Guider for Trius imaging cameras with no filter wheel.
  • Attaches directly to the Starlight Xpress USB Filter Wheel for enhanced guiding accuracy without flexure.
  • Includes a 20 mm extension tube and both male and female T-thread adapters.
  • The Ultra Slimline OAG is expressly designed for use with the Starlight Xpress USB Filter Wheel and either the Lodestar, SXV, or SXV-EX autoguider.
  • Adjustable pick-off prism axis helps to maximize guide image quality.
Free shipping Free shipping
$350.00 $280.00

Guiding can be a daunting task for the new astrophotographer, but it doesn’t have to be. An equatorial mount is a must-have for anyone interested in imaging celestial objects. An equatorial mount compensates for the Earth’s rotation to help your setup stay fixed on a guide star. However, there are many more accessories that can help you guide easily and hassle-free. The three basic tools that astrophotographers use are an off-axis guider, auto-guider, and a guidescope.


An off-axis guider (OAG) connects to your main optical train and typically uses a prism to redirect a small pathway of light to a separate guiding camera. This way, you can do short exposures, detect stars, and calculate guiding errors. This setup is a lightweight option and, in most cases, will not add flexure to your imaging setup. Also, an OAG is typically a cost-effective option: all you need is an OAG and a guiding camera. However, an OAG will add extra length to your imaging train, so it may be cumbersome to obtain focus. We recommend OAGs for new amateur astrophotographers because it is a straightforward and inexpensive guiding system.


If you are looking for a more advanced guiding system, then a guidescope is the way to go. These scopes are typically small refractors that you mount on top of your main imaging system. This is a great option for astrophotographers who prefer to image through a smaller aperture and slower telescope because this is when stars are more difficult to see through an OAG. However, piggybacking a guidescope adds significant weight to your setup and can cause flexure or extra strain on the mount.


An autoguider is an excellent choice for astrophotographers looking to take long exposures. This high-tech camera sits on the back of your guidescope or OAG. The autoguider is then connected to your mount to keep your setup continuously tracking the guide star throughout your imaging session. This dramatically reduces tracking errors and eliminates drift, which can cause oblong stars to appear in your image. Autoguiding is perfect for deep-space imaging, where it is crucial to be precise when guiding.

High Point Scientific is rated 4.9/5 based on 1347 reviews