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Guiding, Centering & Adaptive Optics

Items 1 - 25 of 45
Celestron Off-Axis Guider

Celestron Off Axis Guider - 93648

SKU: CEL-93648
  • For astrophotography applications, an Off-Axis Guider such as this particular unit from Celestron is an essential accessory because it makes heavy guide scopes unnecessary.
  • Allows the same scope to be used for both imaging and guiding.
  • Eliminates flexure, mirror flop, and other tracking issues.
  • Features an independent 360º camera and telescope rotation controls.
  • Compatible with any T-thread or 48 mm filter wheel.
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$259.95 $249.00

ATIK ST4 Compatible Autoguider Cable (2 m) - ATK0027

SKU: ATK-ATK0027
  • Atik Autoguider Cable for the ST-4 autoguiding system.
  • Measures 2 meters in length.
  • Enables connection between your Atik Autoguider and your astro-imaging configuration.
  • The Atik ST4 Autoguiding Cable uses RJ11 connectors.
$5.00

Atik Off-Axis Guider - ATK0070

SKU: ATK-ATK0070
  • With this Atik Off-Axis Guider and its precise fine-focus system, you can create your own optimal guiding system.
  • Three different extension ring lengths allow this OAG to reach focus using a wide variety of imaging cameras.
  • Moving prism helps with selecting the star best suited for your guiding needs.
  • Weighing in at 6.35 ounces, the Atik Off-Axis Guider has a 54 mm clear aperture.
  • Compatible with sensors sizes up to full frame 35 mm
$227.00

Baader Off-Axis Guider for RCC Newton Coma Corrector - GUIDER

SKU: BAD-GUIDER
  • This Baader Planetarium Off-Axis Guider is specifically designed for use with the RCC-I Coma Corrector.
  • With a body measuring 36.5 mm in length, backfocus is set at the theoretical required distance of 91.5 mm for the RCC-I.
  • This OAG combined with a Baader t-ring and crossaim eyepiece or guider enables "Off-Axis" guiding with DSLR cameras without having to use extra rings or extensions.
  • Axial and radial guidestar are conveniently adjustable without having to loosen the main camera connection.
  • Suitable for use with 1.25" autoguiders and guiding eyepieces.
$189.00
$149.00

Orion Deluxe Off-Axis Guider for Astrophotography - 05521

SKU: ORI-05521
  • In order to simultaneously image and guide using the same telescope without an independent guide scope, you need this Orion Deluxe Off-Axis Guider.
  • By not having to use a separate guide scope, tracking issues such as differential flexure and mirror shift are eliminated while overall weight and setup time are reduced.
  • Suitable for use with autoguiders that have T-threads or a 1.25” nosepiece, along with 1.25” illuminated reticle eyepieces.
  • Includes a 2” nosepiece for attaching to any 2” telescope focuser, or any rear cell equipped with T-threads.
  • Three T-extensions of varying lengths (7 mm, 17 mm, and 30 mm) are also included to comply with different combinations of cameras and guiders.
  • Easily locate a guide star with prism tilt adjustment and over 100 degrees of radial adjustment.
$99.99

Orion Mini 50 mm Guide Scope - 08891

SKU: ORI-08891
  • Optical Aperture: 50 mm
$79.99

Orion StarShoot Auto Guider - 52064

SKU: ORI-52064
  • Color or Monochrome Camera: Monochrome
  • Cooled or Uncooled: Uncooled
  • Pixel Array & Resolution: 1280 x 1024 (1.3 MP)
  • Pixel Size in Microns: 5.2
  • Sensor Model: MT9M001
$299.99

ZWO 60mm Guide Scope - ZWO-60280

SKU: ZWO-60280
  • Optical Aperture: 60 mm
$118.00

ADM V Series Guidescope Kit For Celestron C8 - V-C8-125

SKU: ADM-V-C8-125
  • Type of Mounting Hardware: Ring Kits
  • Dovetail or Attachment Type: V-Series (Vixen)
  • Solid or Split (Cradle) Ring: Solid Ring(s)
$169.00

Celestron OAG Wide Adapter for 9.25" EdgeHD, 11" SCT, & 14" SCT - 93652

SKU: CEL-93652
  • The combination of this adapter and the Celestron Off-Axis Guider enhances imaging with larger SCT and EdgeHD telescopes by providing a larger area of illumination.
  • Specifically designed for use with 9.25", 11", and 14" Schmidt-Cassegrain and EdgeHD telescope optical tubes.
  • Best suited for the Canon 5D or 6D and other large format cameras as it enables full image circle use for improved illumination of the sensor.
  • This Celestron OAG Adapter is made of black anodized aluminum and features a wide 62.7 mm clear aperture.
$31.95 $24.95

Orion Thin Off-Axis Guider For Astrophotography - 05531

SKU: ORI-05531
  • This Orion OAG is a elegantly thin Off-Axis Guider optimally suited for use with Newtonian reflector telescopes and DSLR cameras.
  • Permits simultaneous imaging and guiding via a single telescope without requiring a separate guide scope.
  • With only 10.5 mm of thickness, this Orion Off-Axis Guider is a perfect match for telescopes with restricted back focus travel like Newtonian reflectors.
  • This OAG's thin profile keeps it from meddling with the use of coma correctors.
  • Fixes any existing flexures preventing accurate guiding and tracking.
$129.99
$128.00
ADM Accessories Max Guider Female Base with Attached Telescope

ADM Accessories Max Guider Guidescope Aiming Device - Female Saddles - MAX-F

SKU: ADM-MAX-F
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$440.00
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
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$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
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$625.00

Meade Autoguider Port Module for LX80 & LX90 Telescopes - 07509

SKU: MEA-07509
  • The Meade 07509 Autoguider Port Module is expressly designed for LX80 and LX90 telescopes using the Meade AudioStar hand control.
  • Enables long exposure astrophotography by permiting the use of CCD autoguiders.
  • Connects via the AUX input port on the LX80 or LX90 telescope control panel.
  • This Meade Autoguider Port Module is not suitable for use with hand controllers other than the AudioStar such as the 497 AutoStar that comes with some LX90s as well as other models.
$59.99 $54.95

Atik One OAG Off-Axis Guider - ATK0132

SKU: ATK-ATK0132
  • Even though the Atik One Off-Axis Guider is slightly smaller, it still retains all of the features of the original Atik OAG.
  • This easy-to-use Off-Axis Guider is optimally suited for use in conjunction with the separately available Atik GP Guide Camera.
  • Adjustable pickup prism compensates for telescope type variation.
  • The Atik One OAG features a fast, exceptionally smooth, and easily adjustable focusing mechanism.
  • Offers 5 mm of travel distance to allow optional guide cameras to be focused without difficulty.
$186.00
QHY Mini GuideScope for QHY5 Cameras - Mounting Bracket Not Included

QHY Mini Guide Scope Only for QHY5 Series Cameras - MINIGUIDESCOPE

SKU: QHY-MINIGUIDESCOPE
  • Optical Aperture: 30 mm
$109.00
ZWO OAG with updated set screws

ZWO OAG Off-Axis Guider - OAG

SKU: ZWO-OAG
  • This ZWO OAG Off-Axis Guider includes several adapters for connecting your guide camera to your imaging camera.
  • Allows simultaneous guiding and imaging without a guide scope.
  • Made of durable black anodized machined aluminum, the ZWO OAG is compatible with all ZWO ASI cameras.
  • Measuring 16.5 mm in thickness, this lightweight OAG features a large 8 mm x 8 mm prism.
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$128.00
Orion StarShoot AutoGuider with 60 mm Guide Scope

Orion StarShoot AutoGuider and 60mm Guide Scope Package - 21404

SKU: ORI-21404
  • Color or Monochrome Camera: Monochrome
  • Cooled or Uncooled: Uncooled
  • Pixel Array & Resolution: 1280 x 1024 (1.3 MP)
  • Pixel Size in Microns: 5.2
  • Sensor Model: MT9M001
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$429.99
ADM Max Guider - Male Base

ADM Accessories Max Guider Guidescope Aiming Device - Female Saddle/Male Dovetail - MAX-M

SKU: ADM-MAX-M
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$440.00
$179.99
QHY OAG Off-Axis Guider - Small

QHY OAG Off-Axis Guider - Small - OAG-S

SKU: QHY-OAG-S
  • Measuring 54 mm in diameter, this QHY Off-Axis Guider is the small version that supports camera models that use sensors smaller than the APS-C, including the QHY21/22/23, QHY9, and QHY8/10/12.
  • This small QHY OAG accepts M42 threaded adapters only.
  • All QHY OAGs are 10 mm thick without adapters installed, with each containing six 3 mm holes.
  • Despite their differences in telescope/camera interface diameters, all QHY Off-Axis Guiders have identical main bodies, including the prism.
  • For a wide back focus range, the QHY OAG offers an adjustable multi-coated prism as well as an adjustable locking multi-thread 1.25" focuser for those using the QHY5L-II as their guide camera.
  • Connects directly to the QHY90A and QHY695A cameras as well as the QHYCFW2-S filter wheel, no camera side adapter required.

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$180.00
QHY OAG Off-Axis Guider - Medium

QHY OAG Off-Axis Guider - Medium - OAG-M

SKU: QHY-OAG-M
  • Measuring 62 mm in diameter, this QHY Off-Axis Guider is the medium version that works best with cameras that have APS-C, APS-H, and 36x24 sensor sizes.
  • This medium QHY OAG accepts both M42 and M54 threaded adapters on the telescope side as well as the camera side.
  • All QHY OAGs are 10 mm thick without adapters installed, with each containing six 3 mm holes.
  • Despite their differences in telescope/camera interface diameters, all QHY Off-Axis Guiders have identical main bodies, including the prism.
  • For a wide back focus range, the QHY OAG offers an adjustable multi-coated prism as well as an adjustable locking multi-thread 1.25" focuser for those using the QHY5L-II as their guide camera.
  • Connects directly to the QHY16200A camera and QHYCFW2-M filter wheel, no camera adapter required.
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$230.00

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.

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