William Optics Elite Off-Axis Guider with 2" Filter Drawer
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- 2-in-1 design combining an Off-Axis Guider (OAG) and filter drawer for 2" mounted filters
- Low-profile design with optical thickness of 37.5 mm to save on backfocus
- Magnetic filter drawer for quick-release that allows you to swap filters fasters
- 1.25" push-in guide camera holder with locking knob for enhanced stability
- Adjustable prism height 7.5-19mm from field center
William Optics Elite Kit: OAG and 2" Filter Drawer Combo!
The William Optics Elite Drawer OAG Kit integrates Off-axis Guiding and Filter Drawer functionality into one compact, streamlined imaging system. By combining precise guide-star pickup, convenient filter access, and flexible connection options, it helps simplify the imaging train while supporting a wide range of telescope and camera configurations.
It supports standard 2" mounted filters and accepts 1.25" barrels or M42 threaded guide cameras via a helical focuser. The guide camera holder features a locking pin for extra stability. On the telescope side, the kit includes an M54 adapter with M48 and M68 interchangeable threads. On the camera side you have an M54 adapter with M48 interchangeable threads! Providing further versatility when assembling your unique imaging train.
Adjustable High-Transmission Prism
A high-transmission prism is built into the off-axis guider to provide efficient guide-star pickup from the edge of the image field. Its adjustable height allows the prism position to be matched with different image circle sizes, helping maintain reliable guiding without blocking the main imaging area.
Magnetic M48 Filter Drawer
The magnetic filter drawer holds one M48 filter and provides a smooth, secure, and convenient installation experience. It allows quick filter changes while maintaining a clean and compact mechanical structure. Filter, telescope, and camera pictured are not included in the Elite OAG kit purchase.
Wide Range of Telescope Compatibility
Thanks to its interchangeable camera and telescope adapters, it easily fits a wide variety of William Optics telescopes as well as many third-party imaging systems. The kit includes M48, M54, and M68 telescope-side adapters, along with M48 and M54 camera-side adapters, making it simple to incorporate into existing imaging trains while maintaining the required backfocus.
Compatibility:
1.25" and M42 Guide Port with Smooth Helical Focus
The guide port supports both 1.25"push-in and M42 connections and features a smooth helical focusing mechanism for precise guide-camera focus adjustment. This allows fine focusing control while keeping the main imaging train stable and undisturbed. Telescope pictured is not included in the Elite OAG kit purchase.
Flexible Interfaces for Multiple Setups
he kit includes M48, M54, and M68 telescope-side interfaces, along with M48 and M54 camera-side interfaces. This broad compatibility makes it easy to adapt the Elite Drawer OAG Kit to many telescope, camera, and imaging train combinations.
Specifications
- Telescope Connection: M54 interchangeable adapter w/ M68 & M48 threads
-
Camera Connection: M54 interchangeable adapter w/ M48 threads
-
Prism: 12x8 High-Transmission Prism
-
Prism Height Adjustment: 7.5~19 mm
-
Focuser: Helical Focuser (10mm travel)
-
Filter Thread: M48 x 0.75 (for 2" filter)
-
Guide Camera: M42 Thread / 1.25" Push-in
- Thickness: 37.5 mm (1.5 in)
- Weight: 336 g (11.85 oz)
- Direct Compatibility:
- William Optics Cat & UltraCat Series
- William Optics Pleiades Series
- Most third-party telescopes w/ M48, M54, or M68
- Compatibility Requiring WO Flattener or Reducer:
- William Optics Gran Turismo (GT) Series
- William Optics Zenithstar (Z) Series
- William Optics Fluorostar (FLT) Series
Mechanical Diagrams
Replacing Threaded Adapters
Telescope Side:
Remove the six Phillips screws, then replace the pre-installed Telescope Adapter with the appropriate Telescope Adapter included in the kit.
Camera Side:
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws (Position shown in the image above). The trapezoid lock requires extra loosening before removal.
- Replace it with the appropriate Camera Adapter included in the kit.
Camera Installation
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws
- Remove the Camera Adapter from the OAG assembly
- Attach the Camera Adapter to your camera
- Put the camera assembly back onto the OAG
- Look through the OAG opening and rotate the camera until the sensor's long side is aligned
- Tighten the four Camera Adapter Locking Screws
- Check through the OAG opening again and adjust the prism height to avoid blocking the sensor
Set Up Off-Axis Guiding
- Remove the CAA Locking Knob
- Attach the OAG to the telescope
- Install the guide camera into the guide camera adapter
- Turn on the main camera and focus the main imaging system
- Turn on the guide camera and use the helical focuser to bring the guide image into focus
Installing Filters
- Pull out the Filter Drawer
- Install the M48 filter on the Light-In Side of the Filter Drawer
- Reinsert the Filter Drawer while keeping it pressed against the Light-Out Side of the OAG assembly
Other Information
- Country of Manufacture: China
William Optics Elite Kit: OAG and 2" Filter Drawer Combo!
The William Optics Elite Drawer OAG Kit integrates Off-axis Guiding and Filter Drawer functionality into one compact, streamlined imaging system. By combining precise guide-star pickup, convenient filter access, and flexible connection options, it helps simplify the imaging train while supporting a wide range of telescope and camera configurations.
It supports standard 2" mounted filters and accepts 1.25" barrels or M42 threaded guide cameras via a helical focuser. The guide camera holder features a locking pin for extra stability. On the telescope side, the kit includes an M54 adapter with M48 and M68 interchangeable threads. On the camera side you have an M54 adapter with M48 interchangeable threads! Providing further versatility when assembling your unique imaging train.
Adjustable High-Transmission Prism
A high-transmission prism is built into the off-axis guider to provide efficient guide-star pickup from the edge of the image field. Its adjustable height allows the prism position to be matched with different image circle sizes, helping maintain reliable guiding without blocking the main imaging area.
Magnetic M48 Filter Drawer
The magnetic filter drawer holds one M48 filter and provides a smooth, secure, and convenient installation experience. It allows quick filter changes while maintaining a clean and compact mechanical structure. Filter, telescope, and camera pictured are not included in the Elite OAG kit purchase.
Wide Range of Telescope Compatibility
Thanks to its interchangeable camera and telescope adapters, it easily fits a wide variety of William Optics telescopes as well as many third-party imaging systems. The kit includes M48, M54, and M68 telescope-side adapters, along with M48 and M54 camera-side adapters, making it simple to incorporate into existing imaging trains while maintaining the required backfocus.
Compatibility:
1.25" and M42 Guide Port with Smooth Helical Focus
The guide port supports both 1.25"push-in and M42 connections and features a smooth helical focusing mechanism for precise guide-camera focus adjustment. This allows fine focusing control while keeping the main imaging train stable and undisturbed. Telescope pictured is not included in the Elite OAG kit purchase.
Flexible Interfaces for Multiple Setups
he kit includes M48, M54, and M68 telescope-side interfaces, along with M48 and M54 camera-side interfaces. This broad compatibility makes it easy to adapt the Elite Drawer OAG Kit to many telescope, camera, and imaging train combinations.
Specifications
- Telescope Connection: M54 interchangeable adapter w/ M68 & M48 threads
-
Camera Connection: M54 interchangeable adapter w/ M48 threads
-
Prism: 12x8 High-Transmission Prism
-
Prism Height Adjustment: 7.5~19 mm
-
Focuser: Helical Focuser (10mm travel)
-
Filter Thread: M48 x 0.75 (for 2" filter)
-
Guide Camera: M42 Thread / 1.25" Push-in
- Thickness: 37.5 mm (1.5 in)
- Weight: 336 g (11.85 oz)
- Direct Compatibility:
- William Optics Cat & UltraCat Series
- William Optics Pleiades Series
- Most third-party telescopes w/ M48, M54, or M68
- Compatibility Requiring WO Flattener or Reducer:
- William Optics Gran Turismo (GT) Series
- William Optics Zenithstar (Z) Series
- William Optics Fluorostar (FLT) Series
Mechanical Diagrams
Replacing Threaded Adapters
Telescope Side:
Remove the six Phillips screws, then replace the pre-installed Telescope Adapter with the appropriate Telescope Adapter included in the kit.
Camera Side:
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws (Position shown in the image above). The trapezoid lock requires extra loosening before removal.
- Replace it with the appropriate Camera Adapter included in the kit.
Camera Installation
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws
- Remove the Camera Adapter from the OAG assembly
- Attach the Camera Adapter to your camera
- Put the camera assembly back onto the OAG
- Look through the OAG opening and rotate the camera until the sensor's long side is aligned
- Tighten the four Camera Adapter Locking Screws
- Check through the OAG opening again and adjust the prism height to avoid blocking the sensor
Set Up Off-Axis Guiding
- Remove the CAA Locking Knob
- Attach the OAG to the telescope
- Install the guide camera into the guide camera adapter
- Turn on the main camera and focus the main imaging system
- Turn on the guide camera and use the helical focuser to bring the guide image into focus
Installing Filters
- Pull out the Filter Drawer
- Install the M48 filter on the Light-In Side of the Filter Drawer
- Reinsert the Filter Drawer while keeping it pressed against the Light-Out Side of the OAG assembly
- 1x Elite Drawer OAG Body w/ Helical Focuser
- 1x Magnetic Filter Holder
- 1x M54 Camera Adapter
- 1x M48 Camera Adapter
- 1x M54 Telescope Adapter
- 1x M48 Telescope Adapter
- 1x M68 Telescope Adapter
- 6x H1.5 Set Screws
- 2-in-1 design combining an Off-Axis Guider (OAG) and filter drawer for 2" mounted filters
- Low-profile design with optical thickness of 37.5 mm to save on backfocus
- Magnetic filter drawer for quick-release that allows you to swap filters fasters
- 1.25" push-in guide camera holder with locking knob for enhanced stability
- Adjustable prism height 7.5-19mm from field center
William Optics Elite Kit: OAG and 2" Filter Drawer Combo!
The William Optics Elite Drawer OAG Kit integrates Off-axis Guiding and Filter Drawer functionality into one compact, streamlined imaging system. By combining precise guide-star pickup, convenient filter access, and flexible connection options, it helps simplify the imaging train while supporting a wide range of telescope and camera configurations.
It supports standard 2" mounted filters and accepts 1.25" barrels or M42 threaded guide cameras via a helical focuser. The guide camera holder features a locking pin for extra stability. On the telescope side, the kit includes an M54 adapter with M48 and M68 interchangeable threads. On the camera side you have an M54 adapter with M48 interchangeable threads! Providing further versatility when assembling your unique imaging train.
Adjustable High-Transmission Prism
A high-transmission prism is built into the off-axis guider to provide efficient guide-star pickup from the edge of the image field. Its adjustable height allows the prism position to be matched with different image circle sizes, helping maintain reliable guiding without blocking the main imaging area.
Magnetic M48 Filter Drawer
The magnetic filter drawer holds one M48 filter and provides a smooth, secure, and convenient installation experience. It allows quick filter changes while maintaining a clean and compact mechanical structure. Filter, telescope, and camera pictured are not included in the Elite OAG kit purchase.
Wide Range of Telescope Compatibility
Thanks to its interchangeable camera and telescope adapters, it easily fits a wide variety of William Optics telescopes as well as many third-party imaging systems. The kit includes M48, M54, and M68 telescope-side adapters, along with M48 and M54 camera-side adapters, making it simple to incorporate into existing imaging trains while maintaining the required backfocus.
Compatibility:
1.25" and M42 Guide Port with Smooth Helical Focus
The guide port supports both 1.25"push-in and M42 connections and features a smooth helical focusing mechanism for precise guide-camera focus adjustment. This allows fine focusing control while keeping the main imaging train stable and undisturbed. Telescope pictured is not included in the Elite OAG kit purchase.
Flexible Interfaces for Multiple Setups
he kit includes M48, M54, and M68 telescope-side interfaces, along with M48 and M54 camera-side interfaces. This broad compatibility makes it easy to adapt the Elite Drawer OAG Kit to many telescope, camera, and imaging train combinations.
Specifications
- Telescope Connection: M54 interchangeable adapter w/ M68 & M48 threads
-
Camera Connection: M54 interchangeable adapter w/ M48 threads
-
Prism: 12x8 High-Transmission Prism
-
Prism Height Adjustment: 7.5~19 mm
-
Focuser: Helical Focuser (10mm travel)
-
Filter Thread: M48 x 0.75 (for 2" filter)
-
Guide Camera: M42 Thread / 1.25" Push-in
- Thickness: 37.5 mm (1.5 in)
- Weight: 336 g (11.85 oz)
- Direct Compatibility:
- William Optics Cat & UltraCat Series
- William Optics Pleiades Series
- Most third-party telescopes w/ M48, M54, or M68
- Compatibility Requiring WO Flattener or Reducer:
- William Optics Gran Turismo (GT) Series
- William Optics Zenithstar (Z) Series
- William Optics Fluorostar (FLT) Series
Mechanical Diagrams
Replacing Threaded Adapters
Telescope Side:
Remove the six Phillips screws, then replace the pre-installed Telescope Adapter with the appropriate Telescope Adapter included in the kit.
Camera Side:
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws (Position shown in the image above). The trapezoid lock requires extra loosening before removal.
- Replace it with the appropriate Camera Adapter included in the kit.
Camera Installation
- Remove the Filter Drawer
- Loosen the four Camera Adapter Locking Screws
- Remove the Camera Adapter from the OAG assembly
- Attach the Camera Adapter to your camera
- Put the camera assembly back onto the OAG
- Look through the OAG opening and rotate the camera until the sensor's long side is aligned
- Tighten the four Camera Adapter Locking Screws
- Check through the OAG opening again and adjust the prism height to avoid blocking the sensor
Set Up Off-Axis Guiding
- Remove the CAA Locking Knob
- Attach the OAG to the telescope
- Install the guide camera into the guide camera adapter
- Turn on the main camera and focus the main imaging system
- Turn on the guide camera and use the helical focuser to bring the guide image into focus
Installing Filters
- Pull out the Filter Drawer
- Install the M48 filter on the Light-In Side of the Filter Drawer
- Reinsert the Filter Drawer while keeping it pressed against the Light-Out Side of the OAG assembly
Other Information
- Country of Manufacture: China
- 1x Elite Drawer OAG Body w/ Helical Focuser
- 1x Magnetic Filter Holder
- 1x M54 Camera Adapter
- 1x M48 Camera Adapter
- 1x M54 Telescope Adapter
- 1x M48 Telescope Adapter
- 1x M68 Telescope Adapter
- 6x H1.5 Set Screws
William Optics Elite Off-Axis Guider with 2" Filter Drawer