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Askar 140APO 1x Full-Frame Flattener

Askar 140APO 1x Full-Frame Flattener


AK-51045
New
In Stock

HK$ 2100


+ -
圖片僅作供參考，並不代表產品實物及所包括配件。
Pictures shown are for illustration purpose only and may not be an exact representation of the product and accessories included.
  • Description

10% deposit is required for preorders. Stock expected after early December.
In the event of a delay of one month or more, you may opt for a refund or choose to wait for the product. The remaining balance must be settled within two weeks of the product's arrival. No refunds can be accommodated for reasons other than specified.

The 1.0x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 140APO, it still maintained a focal ratio of 7. 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 0.75kg. The back focus from the M48 thread is a standard 55mm. The front thread is M92*1. At the camera end, it is equipped with M68*1, M54*0.75 and M48*0.75 three 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.

1x Flattener Parameter

（After attaching）140APO Focal length

980mm

（After attaching）140APO Focal ratio

f/7

Lens Number

Triplet design

Back Focus

55mm（from the base of M48 male thread）

Weight

0.79kg

Rear-end thread type

M68×1
M54×0.75
M54×0.75-M48×0.75(M48×0.75 filter thread inside)

1x Flattener Installation


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