Astronomy Specialist

ASKAR FMA135 F/4.5 TRIPLET APO LENS

0

$499.00

Quantity
- +

 

The Askar FMA135 F/4.5  is an extremely compact and lightweight triplet apochromatic refractor with one ED (extra-low dispersion) lens. The FMA135, when combined with the built-in three element flattener, is a very capable super wide-field astrograph with minimal chromatic aberration and distortion across an APS-C frame. As well as its superb imaging capability, it can be configured as a visual telescope, finder or guide scope.

 

 

Features

  • Can be used as either a visual telescope or a highly corrected 135mm f/4.5 astrograph.
  • Compact and exceptionally light, at 113mm long and 240 grams.
  • Includes all adapters necessary for use as a photographic, visual, finderscope and guidescope. 
  • 1.25" (M28.5 x 0.6) female thread at the front of the telescope for mounting standard 1.25" filters.
  • Comes with mounting ring with finderscope dovetail base.
  • Extremely portable and versatile construction, ideal for grab and go astrophotography with a star tracker.
  • Highly precise helical focuser.

 

 

 


  

 

Optical design

Air-spaced apochromatic sextuplet with one ED element

Objective diameter

30 mm

Focal length

135 mm

Focal ratio

f/4.5

Mount attachment

Vixen-style finder base

Focuser

Helical focuser

Camera connection

M42 x 0.75, 1.25" adapter 

Backfocus

55 mm

Weight

240 g (without lens covers)

Length

113 mm

SKU

AS-135

 


 

  • FMA135 telescope
  • 1.25" visual extension
  • Tube ring with finder base and adjustment screws
  • Manual

 

 

 

 

 

Single 3 minute shot, Askar FMA135, Sony A7R4.

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