Askar FMA135 135 mm f/4.5 ED APO Astrograph Lens

Product code: ASKR-FMA135
in stock
£315.00 UK Price
£262.50 (ex. VAT) International Price
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Product information

The very new beginning of year 2021 witnesses the advent of our FMA135 astrograph which has inherited the consistent quality, compactness and versatility, from the FMA family while possesses incomparable speciality. As its name indicates, FMA135 was born with a primary mirror plus a flattener. The primary mirror features an APO triplet structure with a diameter of 35mm and a focal length of 135mm, one of which is an ED glass.

The flattener contains three elements which is designed to support APS(advanced photo system) sky imaging and to control the performance at the edge of the photo. The exquisite optical design is the major contribution for its matchless ability in both visual observation and astrophotography as well as chromatic aberration control. Further, the FMA135 can also work as an excellent finder or guider. Its lightness and grace make it possible to attach the FMA135 to various cameras with corresponding adapters. Once attached, the FMA135 turns to be a 135mm manual lens, which will absolutely bring you an magnificent experience in ground object imaging.

There is 1.25" female thread at the front of the astrograph suitable for all purchasable 1.25" filters and standard M42×0.75 male thread at the back which accommodates most stock DSLR or astronomy cameras (an extra adapter is needed). Our standard configuration includes a tube ring for the installation of Vixen finder base, a 1.25" visual back for the attachment of an eyepiece or a guiding camera as well as a high-quality focuser (with thread) and a setting thread to avoid any deviation in astrophotography.

As an ingenious optical design, our FMA135 will definitely offer you a super imaging experience.





Focal length


135mm(plus the flattener)

Focal ratio


F4.5(plus the flattener)

Objective type

Air-spaced APO triplet(including an ED glass)

Sextuplet refractor for APS imaging

Overall length

113mm(photographic mode with flattener)

Total Weight (Including tube ring&dovetail plate)


Rear-end adapter type

M42×0.75 thread(for imaging)

1.25" visual adapter(for visual observation)

Package information

FMA135(one set)

Tube ring(one piece)

1.25" visual adapter(one piece)

screw(five pieces)

manual(one piece)


Product Info

Product Code ASKR-FMA135
Delivery Weight Package