Askar FMA135 135 mm f/4.5 APO Astrograph Lens
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 Askar FMA135 135 mm f/4.5 APO Astrograph LensAskar FMA135 135 mm f/4.5 APO Astrograph Lens 

Askar FMA135 135 mm f/4.5 APO Astrograph Lens

£289.00✓ 2 year warranty

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Out of stock due 10-15 working days

About this product

Model:  askar_fma135
Part Number:  FMA135

The ASKAR FMA135 is a premium six-element 135mm ED lens that delivers superb results for astrophotography.

It also works well as a premium finder / compact ED refractor / guide scope. 

The heart of the FMA135 is an air-spaced 30mm apochromatic f/4.5 triplet with an ED lens to minimise chromatic aberration. This is carefully matched to an integrated three-element field flattener for razor-sharp flat field images images when used with camera sensor sizes up to APS-C. 

The camera side of the FMA135 includes a standard M42x0.75 male thread for easy attachment to most astronomy cameras or T-rings. The instrument has a 55mm back focus.

The top tube ring, which acts as a light/dew shield, includes standard M28.5x0.6 female threads that accept 1.25” astronomical filters.

The body of the FMA135 includes a precise, rotatable, focuse.

For straight-through observing with an eyepiece, there is a standard 1.25” adapter that threads onto FMA optical tube.

The FMA135 also includes a mounting ring for use with standard Vixen-style dovetails.

Specifications:

  • Aperture: 30mm
  • Focal Length: 135mm 
  • Focal Ratio: f/4.5
  • Optical design: Air-spaced sextuplet ED refractor
  • Overall Length: 113mm (photographic mode with flattener)
  • Weight: 280g
  • Rear-end Adapter Type:
    • M42 x 0.75 Thread (for imaging)
    • 1.25" Visual Adapter (for visual use)

 

 

What's in the box

  • FMA135
  • Tube Ring (One Piece)
  • 1.25" Visual Adapter
  • Screw (Five Pieces)
  • Manual
 

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