34% Off

Celestron Off-axis Guider

SKU: CNOAG MFR: 93648
Earn VIP Reward Points

Key Features

  • Achieve pinpoint stars: This off-axis guider is ideal for long exposure astrophotography.
  • Enhance your astrophotography: Capture breathtaking images with precise autoguiding control.
  • Compatible with SCT & EdgeHD telescopes: Seamlessly integrates for superior optical alignment.
  • Multiple adapters included: Connect your Celestron telescope and camera with ease.
  • Optimize image quality: Fine-tune focus with included T-thread spacers for sharp images.
  • Rock-solid guiding: Ensures stable tracking, essential for detailed astrophotography shots.
See More Product Details
FREE 2-Day Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

1 Year

$24.99

2 Year

$34.99

3 Year

$49.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Accessories
Protection
Q&A

Questions & Answers

Shopper : Why Did You Choose This?LANCE K : Best priceJOHN R : Designed to attach and work well guiding a long focal length Edge HD SCT telescope.GARY A : I will use this item on my Celestron 8SE scope for guidingROBERT S : Good reviewsJEFFREY V : Celestron built for Celestron compatibility. Also has the helical focuser attachedROBERT F : I chose this to guide my long focal length 7" Maksutov Cassegrain telescope. Most say this is a better option than using a guide scope.DENNIS S : Same brand as my telescope and other accessories for easy fitJOSE M : Excellent online reviews. Good variety of accessories can accommodate many designs of optical trains.SCOTT D : Adaptable. Short optical length. Rotates to allow choice of guide stars & camera orientation.EDWARD F : Used by other astro-photographers without difficultyCHRIS B : I needed an off axis guider for my SCT. This celestron got very good reviews.Microtronix D : To improve guiding of my C11 EdgeHD on Celestron CGX-L Mount.

Reviews about this item

Review Summary

2022-06-28T09:24:00

Rated 5 out of 5

Great OAG

Love it, well made, works great. Large prism and inside diameter. Easily rotates with adjustment screws on each side. Excellent adjustments for guide camera focus (Locking screws plus Helical adjustment).

David J.

2022-04-07T12:43:53

Rated 4 out of 5

Celestron OAG

Celestron Off Axis Guider (OAG) is an excellent product. Includes all needed spacer and pices to assemble out of the box. The prism is huge and able to find stars in a light polluted sky. The only reason I give it four stars is that it is heavy and should include the 48mm visual back.

Jeffrey V.

2022-02-08T08:57:16

Rated 5 out of 5

Celestron Off Axis Guider

This OAG allows a wider viewing window for my guide camera to pick up guide stars, thereby allowing me to rack stars more accurately.

Lamont B.

2021-08-11T17:39:39

Rated 3 out of 5

Nice wide FoV for a prism, but optical design could use improvements.

Nice (relatively) wide field prism, nice for use with a SC Telescope like the EdgeHD series and a larger sensor guiding camera to get more stars. The standard adapters it comes with are designed to take up all the space between the telescope and the camera, I still haven't figured out a way to have both this and my 0.7x reducer on at he same time. One downside, if there's a bright star nearby you'll get circular reflections in the image -- usually just faint streaks to an arc. PHD2 seems to always choose these to guide on. It doesn't happen to me on all targets, but when it does you need to manually choose a guide star. See attached images.

BRIAN L.

2020-08-02T08:23:25

Rated 5 out of 5

Get pinpoint stars with this OAG

Just what I needed. Built solid, plenty of adjustment. The non rotating helical guider focuser is a real plus. It has a good selection of adapters included that fit well and the included spacers came in real handy. First time use was quite easy. Of it took a little time to get both cameras focused but it was not a difficult process. Great off axis guider.

Chris B.

2020-07-05T09:03:44

Rated 4 out of 5

Excellent quality, a little heavy

The large amount of adapters and extensions included in this kit are a great help when working out your back focus in an imaging train. The entire unit is extremely heavy duty, as most Celestron OEM parts are. That can be good or bad depending on your intent. Fully assembled it is quite wide for an OAG, and weighs a fair bit. You may have trouble if you use a motorized focuser in the range of auto guide cam rotation. All in all it’s an excellent quality OAG with a large and easy to adjust prism.

CODY D.

2019-05-14T13:44:17

Rated 4 out of 5

Easy to set up

Easy to set up. The only minor change I would suggest is to use stronger thumb screws. These seem easy to break if you tighten them too much. Otherwise a good product. I am still waiting on a few good nights to use this product.

Eugene S.

2017-09-24T13:04:27

Rated 5 out of 5

Celestron OAG

I'm impressed with the flexibility of this device. Easy to rotate the guidescope or the dslr camera individually. I did need to add a short extender to allow for focus of my lodestar x2 so that dslr and guide camera would focus together. I'm attached to a celestron c8. OAG is on the heavy side but a solidly built device with many accessories to accommodate different scopes etc

Daniel D.

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

1 Accessories for Celestron Off-axis Guider

  • All Accessories (1)
  • Adapters & Mounts (1)

About Celestron Off-axis Guider

FEATURED REVIEWS

Great OAG

By David J.

Love it, well made, works great. Large prism and inside diameter. Easily rotates with adjustment screws on each side. Excellent adjustments for guide camera focus (Locking screws plus Helical adjustment).

Celestron Off Axis Guider

By Lamont B.

This OAG allows a wider viewing window for my guide camera to pick up guide stars, thereby allowing me to rack stars more accurately.

Take your astrophotography to the next level with the Celestron Off-Axis Guider, an indispensable tool for achieving the sharpest and most accurate celestial images. Designed for long focal length telescopes, this high-quality off-axis guider is engineered to provide precise guiding by using a prism to intercept a small portion of the telescope's focal plane. This innovative approach ensures that any movement detected by the guide star is identically reflected in the imaging camera, resulting in stellar astroimages with perfectly round stars.

Crafted from durable black anodized aluminum, the Celestron Off-Axis Guider is both compact and easy to use, making it a versatile addition to your astrophotography setup. It boasts a large 12.5mm adjustable prism, strategically positioned to capture brighter guide stars by moving closer to the center of the telescope's focal plane. This feature enhances the illumination of the autoguider sensor, ensuring that you can easily locate a guide star even from the far edges of the telescope's focal plane.

The guider's high-quality, fixed-orientation Helical focuser is a standout feature, offering smooth and precise focusing of the autoguider without altering the camera's orientation. This eliminates the common challenge of achieving simultaneous focus between the imaging camera and autoguider, saving you valuable time and effort.

Celestron's Off-Axis Guider comes complete with all necessary spacers and adapters, accommodating most common imaging configurations without the need for additional purchases. This includes compatibility with DSLR cameras, Nightscape CCD cameras, and more. The package includes a variety of adapters such as SCT/EdgeHD, female M48, female M42 (T-thread), male M48, male M42 (T-thread), and three T-thread spacers, ensuring a seamless integration with your existing equipment.

Additional Specifications:
- Helical Focuser Travel: 8mm, providing fine adjustments for optimal focus.
- Telescope Connection: M42 T-thread, M48, and SCT/EdgeHD, offering broad compatibility with various telescope models.
- Autoguider Connection: M42 T-thread, and standard 1.25" adapter, ensuring a secure and stable connection.
- Camera Connection: M42 T-thread, and M48, facilitating easy attachment to a wide range of cameras.

With a high customer rating of 4.5 out of 5 stars, the Celestron Off-Axis Guider is a testament to its reliability and performance. Choose this Celestron product for its reputation for producing top-tier optical equipment and experience the difference in your astrophotography pursuits.

Celestron Off-axis Guider Features

  • Most accurate way to guide improved accuracy compared to using a separate guide scope.
  • 12.5mm multi-coated prism with aluminized backing for maximum reflectivity and illumination to the autoguider
  • Fixed-orientation helical focuser for easy, smooth and accurate autoguider focus
  • 48mm clear aperture supports full frame cameras without vignetting
  • Includes adapters with the correct spacing for DSLR cameras, Nightscape CCD and other popular astroimaging cameras
  • Ideal for Schmidt- Cassegrain and EdgeHD telescopes

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Key Features

  • Achieve pinpoint stars: This off-axis guider is ideal for long exposure astrophotography.
  • Enhance your astrophotography: Capture breathtaking images with precise autoguiding control.
  • Compatible with SCT & EdgeHD telescopes: Seamlessly integrates for superior optical alignment.
  • Multiple adapters included: Connect your Celestron telescope and camera with ease.
  • Optimize image quality: Fine-tune focus with included T-thread spacers for sharp images.
  • Rock-solid guiding: Ensures stable tracking, essential for detailed astrophotography shots.

What's in the box:

  • SCT/EdgeHD Adapter
  • M48 Female Adapter
  • M48 Male Adapter
  • M42 Female T-Thread Adapter
  • M42 Male T-Thread Adapter
  • 3 x T-Thread Spacers
  • 2-Year Warranty