Askar 1x Full Frame Flattener for 103APO Telescope
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.
The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x reducer. Introduced here is the 1.0x flattener, which is optimized for the Askar 103APO, and can provide more possibilities for telescope use.
The 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 103APO, it still maintained a focal length of 6.8. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
The 1.0x flattener adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.58kg. The back focus from the M48 thread is a standard 55mm. The front thread is M84*1. At the camera end, it is equipped with M54*0.75 and M48*0.75 two sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.
Specifications:
- (After attaching) 103APO Focal length: 700.4mm
- (After attaching) 103APO Focal ratio: f/6.8
- Lens Number: Triplet design
- Back Focus: 55mm（from the base of M48 male thread）
- Weight: 0.58kg
- Rear-end thread type:
- M54×0.75
- M54×0.75-M48×0.75 (M48×0.75 filter thread inside)
Other Information
- Country of Manufacture: China
The 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 103APO, it still maintained a focal length of 6.8. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
The 1.0x flattener adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.58kg. The back focus from the M48 thread is a standard 55mm. The front thread is M84*1. At the camera end, it is equipped with M54*0.75 and M48*0.75 two sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.
Specifications:
- (After attaching) 103APO Focal length: 700.4mm
- (After attaching) 103APO Focal ratio: f/6.8
- Lens Number: Triplet design
- Back Focus: 55mm（from the base of M48 male thread）
- Weight: 0.58kg
- Rear-end thread type:
- M54×0.75
- M54×0.75-M48×0.75 (M48×0.75 filter thread inside)
The Askar 103 APO comes with three optional premium accessories, a 1.0x flattener, a 0.8x reducer, and a 0.6x reducer. Introduced here is the 1.0x flattener, which is optimized for the Askar 103APO, and can provide more possibilities for telescope use.
The 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 103APO, it still maintained a focal length of 6.8. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
The 1.0x flattener adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.58kg. The back focus from the M48 thread is a standard 55mm. The front thread is M84*1. At the camera end, it is equipped with M54*0.75 and M48*0.75 two sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.
Specifications:
- (After attaching) 103APO Focal length: 700.4mm
- (After attaching) 103APO Focal ratio: f/6.8
- Lens Number: Triplet design
- Back Focus: 55mm（from the base of M48 male thread）
- Weight: 0.58kg
- Rear-end thread type:
- M54×0.75
- M54×0.75-M48×0.75 (M48×0.75 filter thread inside)
Other Information
- Country of Manufacture: China
Askar 1x Full Frame Flattener for 103APO Telescope