Askar 0.74x Reducer for Askar 111F & ZWO FF110 Apo Telescopes
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.
- Dedicated 0.74x reducer turns the Askar 111F refractor into a faster wide-field astrograph for deep-sky imaging.
- Full-frame optimized design maintains sharp stars and excellent edge-to-edge correction.
- Faster focal ratio allows shorter exposures and brighter astrophotography results.
- Precision-matched for the Askar 111F to maintain excellent optical performance and alignment.
Askar 0.74x Reducer: Unlock a more Efficient Astrophotography Experience!
Unlock the full wide-field imaging potential of your Askar 111F with the dedicated 0.74x Reducer. Designed specifically for the 111F optical system, this premium reducer transforms the telescope into a fast f/5.1 astrograph—perfect for capturing expansive nebulae, large star fields, galaxies, and faint deep-sky targets with shorter exposure times and brighter overall results.
Its precision triplet optical design includes built-in field-flattening correction to effectively eliminate field curvature, producing sharp, well-corrected stars all the way to the edges of the frame. Supporting a full-frame 44 mm image circle, the reducer delivers excellent edge-to-edge performance for modern astrophotography cameras and high-resolution imaging setups.
Built for both performance and convenience, the reducer features a standard 55 mm back focus and secure M68x1 threaded connections on both ends for improved rigidity and alignment during imaging sessions. The included M54x0.75 and M48x0.75 adapters allow for quick, direct connection to the 111F, while the built-in 2-inch filter thread makes it easy to install a wide range of astronomical filters without additional adapters!
Specifications
- Compatibility: Askar 111F refractor
- Effective Focal length: 566mm
- Effective f/Ratio: f/5.1
- Lens Number: Triplet design
- Back Focus: 55 mm (base of M48 male thread）
- Weight: 0.5 kg (1.1 lb)
- Rear-end thread type: M68x1
- Filter threading: M48x0.75
- Image circle: 44 mm (Full frame)
- Assembly: CNC-machined
Size Diagram
Installation Diagram
Optical Path Diagram
Spot Diagram
Other Information
- Country of Manufacture: China
Askar 0.74x Reducer: Unlock a more Efficient Astrophotography Experience!
Unlock the full wide-field imaging potential of your Askar 111F with the dedicated 0.74x Reducer. Designed specifically for the 111F optical system, this premium reducer transforms the telescope into a fast f/5.1 astrograph—perfect for capturing expansive nebulae, large star fields, galaxies, and faint deep-sky targets with shorter exposure times and brighter overall results.
Its precision triplet optical design includes built-in field-flattening correction to effectively eliminate field curvature, producing sharp, well-corrected stars all the way to the edges of the frame. Supporting a full-frame 44 mm image circle, the reducer delivers excellent edge-to-edge performance for modern astrophotography cameras and high-resolution imaging setups.
Built for both performance and convenience, the reducer features a standard 55 mm back focus and secure M68x1 threaded connections on both ends for improved rigidity and alignment during imaging sessions. The included M54x0.75 and M48x0.75 adapters allow for quick, direct connection to the 111F, while the built-in 2-inch filter thread makes it easy to install a wide range of astronomical filters without additional adapters!
Specifications
- Compatibility: Askar 111F refractor
- Effective Focal length: 566mm
- Effective f/Ratio: f/5.1
- Lens Number: Triplet design
- Back Focus: 55 mm (base of M48 male thread）
- Weight: 0.5 kg (1.1 lb)
- Rear-end thread type: M68x1
- Filter threading: M48x0.75
- Image circle: 44 mm (Full frame)
- Assembly: CNC-machined
Size Diagram
Installation Diagram
Optical Path Diagram
Spot Diagram
- 1x 0.74x reducer for 111F refractor
- 2x Threaded protective metal caps
- Dedicated 0.74x reducer turns the Askar 111F refractor into a faster wide-field astrograph for deep-sky imaging.
- Full-frame optimized design maintains sharp stars and excellent edge-to-edge correction.
- Faster focal ratio allows shorter exposures and brighter astrophotography results.
- Precision-matched for the Askar 111F to maintain excellent optical performance and alignment.
Askar 0.74x Reducer: Unlock a more Efficient Astrophotography Experience!
Unlock the full wide-field imaging potential of your Askar 111F with the dedicated 0.74x Reducer. Designed specifically for the 111F optical system, this premium reducer transforms the telescope into a fast f/5.1 astrograph—perfect for capturing expansive nebulae, large star fields, galaxies, and faint deep-sky targets with shorter exposure times and brighter overall results.
Its precision triplet optical design includes built-in field-flattening correction to effectively eliminate field curvature, producing sharp, well-corrected stars all the way to the edges of the frame. Supporting a full-frame 44 mm image circle, the reducer delivers excellent edge-to-edge performance for modern astrophotography cameras and high-resolution imaging setups.
Built for both performance and convenience, the reducer features a standard 55 mm back focus and secure M68x1 threaded connections on both ends for improved rigidity and alignment during imaging sessions. The included M54x0.75 and M48x0.75 adapters allow for quick, direct connection to the 111F, while the built-in 2-inch filter thread makes it easy to install a wide range of astronomical filters without additional adapters!
Specifications
- Compatibility: Askar 111F refractor
- Effective Focal length: 566mm
- Effective f/Ratio: f/5.1
- Lens Number: Triplet design
- Back Focus: 55 mm (base of M48 male thread）
- Weight: 0.5 kg (1.1 lb)
- Rear-end thread type: M68x1
- Filter threading: M48x0.75
- Image circle: 44 mm (Full frame)
- Assembly: CNC-machined
Size Diagram
Installation Diagram
Optical Path Diagram
Spot Diagram
Other Information
- Country of Manufacture: China
- 1x 0.74x reducer for 111F refractor
- 2x Threaded protective metal caps
Askar 0.74x Reducer for Askar 111F & ZWO FF110 Apo Telescopes