Askar Focal Plane Adjuster
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
In astrophotography, users often experience unsatisfactory image results if the focuser or camera sensor is not flat. As sensor sizes increases, the need for greater precision in adjustments increases. Users need to ensure the focal plane is perpendicular to the optical axis of the system.
The Askar Focal Plane Adjuster helps make precise adjustments to the tilt of the focuser or camera sensor, improving image quality.
Currently, most common focal plane adjusters use a three-point push-pull mechanism. While adjusting the tilted angle, the relative distance between the two ends changes, but this also affects the back focus, thus impacting the star quality at the edges of the image. The Askar focal plane adjuster uses a unique spherical adjustment design. This method adjusts the tilt angle without affecting the relative distance, ensuring more accurate and consistent adjustments.
The Askar Focal Plane Adjuster is simple to use, with no need for additional tools, and it also eliminates the need for repeated disassembly and adjustment when attaching a camera or other required accessory. Just rotate the handle to adjust the tilt angle for added convenience.
The Askar Focal Plane Adjuster's front thread is a female M54 and the rear thread is a male M48. The package includes an M54 to M48 adapter to convert the front M54 thread to the M48 thread without affecting the overall thickness, offering a wider range of use.
The overall thickness of the Askar focal plane adjuster is 18mm, which is the same as the thickness of the M48 filter threaded ring at the rear end of the reducers of some of the telescopes of Sharpstar Optics and Askar. Users with specific Sharpstar-made telescopes (e.g. APO series, ASKAR V, 71F, 50EDPH) can directly replace the filter thread ring with the Askar Focal Plane Adjuster without recalculating the back focus.
The Askar Focal Plane Adjuster offers an angle adjustment range of ±1° and is printed with 5′ increments on the scale for easy adjustment.
Other Information
- Country of Manufacture: China
In astrophotography, users often experience unsatisfactory image results if the focuser or camera sensor is not flat. As sensor sizes increases, the need for greater precision in adjustments increases. Users need to ensure the focal plane is perpendicular to the optical axis of the system.
The Askar Focal Plane Adjuster helps make precise adjustments to the tilt of the focuser or camera sensor, improving image quality.
Currently, most common focal plane adjusters use a three-point push-pull mechanism. While adjusting the tilted angle, the relative distance between the two ends changes, but this also affects the back focus, thus impacting the star quality at the edges of the image. The Askar focal plane adjuster uses a unique spherical adjustment design. This method adjusts the tilt angle without affecting the relative distance, ensuring more accurate and consistent adjustments.
The Askar Focal Plane Adjuster is simple to use, with no need for additional tools, and it also eliminates the need for repeated disassembly and adjustment when attaching a camera or other required accessory. Just rotate the handle to adjust the tilt angle for added convenience.
The Askar Focal Plane Adjuster's front thread is a female M54 and the rear thread is a male M48. The package includes an M54 to M48 adapter to convert the front M54 thread to the M48 thread without affecting the overall thickness, offering a wider range of use.
The overall thickness of the Askar focal plane adjuster is 18mm, which is the same as the thickness of the M48 filter threaded ring at the rear end of the reducers of some of the telescopes of Sharpstar Optics and Askar. Users with specific Sharpstar-made telescopes (e.g. APO series, ASKAR V, 71F, 50EDPH) can directly replace the filter thread ring with the Askar Focal Plane Adjuster without recalculating the back focus.
The Askar Focal Plane Adjuster offers an angle adjustment range of ±1° and is printed with 5′ increments on the scale for easy adjustment.
In astrophotography, users often experience unsatisfactory image results if the focuser or camera sensor is not flat. As sensor sizes increases, the need for greater precision in adjustments increases. Users need to ensure the focal plane is perpendicular to the optical axis of the system.
The Askar Focal Plane Adjuster helps make precise adjustments to the tilt of the focuser or camera sensor, improving image quality.
Currently, most common focal plane adjusters use a three-point push-pull mechanism. While adjusting the tilted angle, the relative distance between the two ends changes, but this also affects the back focus, thus impacting the star quality at the edges of the image. The Askar focal plane adjuster uses a unique spherical adjustment design. This method adjusts the tilt angle without affecting the relative distance, ensuring more accurate and consistent adjustments.
The Askar Focal Plane Adjuster is simple to use, with no need for additional tools, and it also eliminates the need for repeated disassembly and adjustment when attaching a camera or other required accessory. Just rotate the handle to adjust the tilt angle for added convenience.
The Askar Focal Plane Adjuster's front thread is a female M54 and the rear thread is a male M48. The package includes an M54 to M48 adapter to convert the front M54 thread to the M48 thread without affecting the overall thickness, offering a wider range of use.
The overall thickness of the Askar focal plane adjuster is 18mm, which is the same as the thickness of the M48 filter threaded ring at the rear end of the reducers of some of the telescopes of Sharpstar Optics and Askar. Users with specific Sharpstar-made telescopes (e.g. APO series, ASKAR V, 71F, 50EDPH) can directly replace the filter thread ring with the Askar Focal Plane Adjuster without recalculating the back focus.
The Askar Focal Plane Adjuster offers an angle adjustment range of ±1° and is printed with 5′ increments on the scale for easy adjustment.
Other Information
- Country of Manufacture: China
Askar Focal Plane Adjuster