QHY Off-Axis Guider - Large Pro Version with 10x14mm Prism
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Unlike external guiding arrangements, when using an OAG, the guiding camera and the imaging camera share the field of view of main optical system. If a user's OTA has a long focal length, and the environment is not ideal, there will often be fewer stars suitable for guiding to be found in the FOV. One way to improve the chance of finding a good guide star is to use a guide camera with a larger sensor. For example, guide cameras like the QHY5III174M or the QHY5III585C have a FOV that is 2-4 times larger than that of smaller cameras typically sold as guiders. This larger FOV naturally allows you to capture more stars, essentially solving the issue of no or few stars available to guide the image.
In order for a large-sensor guide camera to fully perform to its potential in an OAG, a prism large enough to allow illumination of the larger sensor is needed to avoid severe vignetting. The new OAG-L Pro uses a new wider prism to better accommodate larger sensor guide cameras. The prism size of the standard QHY OAG-L is about 8 x 8mm. The new QHY OAG-L Pro prism is 10 x 14mm.
When the QHY5III174M is connected to the older version of QHY OAG-L for actual shooting, there is severe vignetting (see Image 1 in second photo above). In contrast, when QHY5III174M is connected to the new QHY OAG-L Pro in the same optical system, there’s only a small amount of darkening occurs at the edges, which won’t affect guiding at night (see Image 2 in second photo above).
The QHY OAG Series directly attaches to the camera or filter wheel with six screws, ensuring a solid, parallel and reliable mechanical connection. At the same time, various standard and optional QHY accessories can be used to realize a variety of structural combinations.
The QHY OAG-L Pro has the same aperture as the front plate of the QHYCFW3XL (62mm) and they can be directly mated. QHY also provides compatible adapters for QHYCFW3L and QHYCFW3M as standard accessories, making the OAG-L Pro compatible with more filter wheels. At the same time, solutions to achieve a back focal length of 55mm are also provided (see fourth photo above)
The QHY OAG-L Pro is designed to support cameras with larger sensors like the QHY461PH, QHY600, and their corresponding large optical systems. Therefore, it only provides M62 and M54 thread outputs. For smaller systems needing M48 threads, a new QHYOAGM Pro with larger pick off prism is under development and will be available soon.
QHY OAG-L Pro Specifications
- Telescope Interface: M62/0.75 or M54/0.75 (combined with certain adapters)
- Focal Length: 12mm (excluding adapter)
- Suitable for CCD/CMOS Size: Full Frame and Medium Frame CMOS
- Compatible Filter Wheel: QHYCFW3XL, QHYCFW3L and QHYCFW3M (combined with certain adapters)
- Compatible Guide Camera: Large-sensor guiding camera like QHY5III174M is recommended. Also be compatible with smaller cameras
- Guide Camera Interface: 1.25 inch
- Weight: About 165g
Other Information
- Country of Manufacture: China
Unlike external guiding arrangements, when using an OAG, the guiding camera and the imaging camera share the field of view of main optical system. If a user's OTA has a long focal length, and the environment is not ideal, there will often be fewer stars suitable for guiding to be found in the FOV. One way to improve the chance of finding a good guide star is to use a guide camera with a larger sensor. For example, guide cameras like the QHY5III174M or the QHY5III585C have a FOV that is 2-4 times larger than that of smaller cameras typically sold as guiders. This larger FOV naturally allows you to capture more stars, essentially solving the issue of no or few stars available to guide the image.
In order for a large-sensor guide camera to fully perform to its potential in an OAG, a prism large enough to allow illumination of the larger sensor is needed to avoid severe vignetting. The new OAG-L Pro uses a new wider prism to better accommodate larger sensor guide cameras. The prism size of the standard QHY OAG-L is about 8 x 8mm. The new QHY OAG-L Pro prism is 10 x 14mm.
When the QHY5III174M is connected to the older version of QHY OAG-L for actual shooting, there is severe vignetting (see Image 1 in second photo above). In contrast, when QHY5III174M is connected to the new QHY OAG-L Pro in the same optical system, there’s only a small amount of darkening occurs at the edges, which won’t affect guiding at night (see Image 2 in second photo above).
The QHY OAG Series directly attaches to the camera or filter wheel with six screws, ensuring a solid, parallel and reliable mechanical connection. At the same time, various standard and optional QHY accessories can be used to realize a variety of structural combinations.
The QHY OAG-L Pro has the same aperture as the front plate of the QHYCFW3XL (62mm) and they can be directly mated. QHY also provides compatible adapters for QHYCFW3L and QHYCFW3M as standard accessories, making the OAG-L Pro compatible with more filter wheels. At the same time, solutions to achieve a back focal length of 55mm are also provided (see fourth photo above)
The QHY OAG-L Pro is designed to support cameras with larger sensors like the QHY461PH, QHY600, and their corresponding large optical systems. Therefore, it only provides M62 and M54 thread outputs. For smaller systems needing M48 threads, a new QHYOAGM Pro with larger pick off prism is under development and will be available soon.
QHY OAG-L Pro Specifications
- Telescope Interface: M62/0.75 or M54/0.75 (combined with certain adapters)
- Focal Length: 12mm (excluding adapter)
- Suitable for CCD/CMOS Size: Full Frame and Medium Frame CMOS
- Compatible Filter Wheel: QHYCFW3XL, QHYCFW3L and QHYCFW3M (combined with certain adapters)
- Compatible Guide Camera: Large-sensor guiding camera like QHY5III174M is recommended. Also be compatible with smaller cameras
- Guide Camera Interface: 1.25 inch
- Weight: About 165g
- 1x OAG-L Pro
- 1x adapter for QHYCFL-M
- 1x 5mm M62 to 54(F) spacer
- 1x 5mm M62(F) spacer
- M3x20mm screws
- M3x6mm screws
- M3x18mm screws
- M3x10 thumb screws + 1mm hexagon keys
- 1x driver download instructions
Unlike external guiding arrangements, when using an OAG, the guiding camera and the imaging camera share the field of view of main optical system. If a user's OTA has a long focal length, and the environment is not ideal, there will often be fewer stars suitable for guiding to be found in the FOV. One way to improve the chance of finding a good guide star is to use a guide camera with a larger sensor. For example, guide cameras like the QHY5III174M or the QHY5III585C have a FOV that is 2-4 times larger than that of smaller cameras typically sold as guiders. This larger FOV naturally allows you to capture more stars, essentially solving the issue of no or few stars available to guide the image.
In order for a large-sensor guide camera to fully perform to its potential in an OAG, a prism large enough to allow illumination of the larger sensor is needed to avoid severe vignetting. The new OAG-L Pro uses a new wider prism to better accommodate larger sensor guide cameras. The prism size of the standard QHY OAG-L is about 8 x 8mm. The new QHY OAG-L Pro prism is 10 x 14mm.
When the QHY5III174M is connected to the older version of QHY OAG-L for actual shooting, there is severe vignetting (see Image 1 in second photo above). In contrast, when QHY5III174M is connected to the new QHY OAG-L Pro in the same optical system, there’s only a small amount of darkening occurs at the edges, which won’t affect guiding at night (see Image 2 in second photo above).
The QHY OAG Series directly attaches to the camera or filter wheel with six screws, ensuring a solid, parallel and reliable mechanical connection. At the same time, various standard and optional QHY accessories can be used to realize a variety of structural combinations.
The QHY OAG-L Pro has the same aperture as the front plate of the QHYCFW3XL (62mm) and they can be directly mated. QHY also provides compatible adapters for QHYCFW3L and QHYCFW3M as standard accessories, making the OAG-L Pro compatible with more filter wheels. At the same time, solutions to achieve a back focal length of 55mm are also provided (see fourth photo above)
The QHY OAG-L Pro is designed to support cameras with larger sensors like the QHY461PH, QHY600, and their corresponding large optical systems. Therefore, it only provides M62 and M54 thread outputs. For smaller systems needing M48 threads, a new QHYOAGM Pro with larger pick off prism is under development and will be available soon.
QHY OAG-L Pro Specifications
- Telescope Interface: M62/0.75 or M54/0.75 (combined with certain adapters)
- Focal Length: 12mm (excluding adapter)
- Suitable for CCD/CMOS Size: Full Frame and Medium Frame CMOS
- Compatible Filter Wheel: QHYCFW3XL, QHYCFW3L and QHYCFW3M (combined with certain adapters)
- Compatible Guide Camera: Large-sensor guiding camera like QHY5III174M is recommended. Also be compatible with smaller cameras
- Guide Camera Interface: 1.25 inch
- Weight: About 165g
Other Information
- Country of Manufacture: China
- 1x OAG-L Pro
- 1x adapter for QHYCFL-M
- 1x 5mm M62 to 54(F) spacer
- 1x 5mm M62(F) spacer
- M3x20mm screws
- M3x6mm screws
- M3x18mm screws
- M3x10 thumb screws + 1mm hexagon keys
- 1x driver download instructions
QHY Off-Axis Guider - Large Pro Version with 10x14mm Prism