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Guiding, Centering & Adaptive Optics

6 Items

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.

Orion Mini 50 mm Guide Scope - 08891

SKU: ORI-08891
  • Optical Aperture: 50 mm

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.

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
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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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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