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Astrophotography Deal - Celestron 11" RASA - $1000 Off - Now Only $2595 - Limited Quantity On Hand

Guiding, Centering & Adaptive Optics

Items 26 - 46 of 46

ZWO Atmospheric Dispersion Corrector - ADC

SKU: ZWO-ADC
  • 1.25" eyepiece adapter with brass compression ring on the top side
  • 1.25" barrel adapter on the bottom side
  • Contains female T-threads on both sides
  • A white locking screw makes the null point easily detectable for setting the levers symmetrically and fine positioning without rotating the ADC body
$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

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
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
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 $386.99
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

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
$179.99 $152.99
ADM Mini Max Guider Aiming Device

ADM Mini-Max Guider Alt-Az Aiming Device - Female Saddles - MINI-MAX-F

SKU: ADM-MINI-MAX-F
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$330.00
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
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
Large Version of QHY OAG (OAG-S in front)

QHY OAG Off-Axis Guider - Large - OAG-L

SKU: QHY-OAG-L
  • Measuring 68 mm in diameter, this QHY Off-Axis Guider is the large version that works best with large sensor cameras that such as the QHY(IC)16803.
  • 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 QHYCFW2-L large color filter wheel, no camera side adapter required.
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$280.00
ADM Accessories Alt/Az TGAD Aiming Device for Side-By-Side Systems

ADM Alt/Az Tandem Aiming Device for Side-By-Side Systems - TGAD

SKU: ADM-TGAD
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$550.00
QHY Mini GuideScope for QHY5-II Series Cameras
$129.00
ZWO M42 Camera Adapter for ZWO Off-Axis Guider

ZWO M42 Adapter (OAG) - OAG-M42C

SKU: ZWO-OAG-M42C
  • ZWO Off-Axis Guider OAG adapter with M42 threads.
  • Connects the ZWO OAG to M42 threaded imaging cameras.
$18.00
ADM Mini-Max Guider - Male Saddle/Female Dovetail

ADM Mini-Max Guider Alt-Az Aiming Device - Female Saddle/Male Dovetail - MINI-MAX-M

SKU: ADM-MINI-MAX-M
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$330.00
ADM D Series SBS Dovetail Plate with Max Guider Aiming Device

ADM Accessories D Series Side-by-Side Dovetail Plate with Max Guider - DSBS-MAX

SKU: ADM-DSBS-MAX
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$400.00
ADM SBS Dovetail Plate with Max Guider & Dual "D" & "V" Saddle

ADM Accessories SBS Dovetail Plate with Max Guider and Dual DV Series Saddle.- DSBS-MAX-DUAL

SKU: ADM-DSBS-MAX-DUAL
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$569.00
ADM D Series SBS Dovetail Plate with MiniMax Guider

ADM D Series Side-by-Side Dovetail Plate with MiniMax Guider - DSBS-MINIMAX

SKU: ADM-DSBS-MINIMAX
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
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$300.00
ADM V Series Side-By-Side Dovetail System with MiniMax Guider

ADM Accessories V Series Side-By-Side System w/MiniMAX Guider - VSBS-MINIMAX

SKU: ADM-VSBS-MINIMAX
  • Type of Mounting Hardware: MaxGuide/Aiming Kits
  • Dovetail or Attachment Type: V-Series (Vixen)
  • Dovetail, Saddle or Mount Adapter Length: 11"
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$450.00

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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