Askar 180 mm f/4.5 APO Telephoto Lens - Travel Refractor - Guide Scope and Spotting Scope

With the FMA180 Askar has created a triplet APO refractor with unique visual and photographic applications

♦ With just a few simple steps, the APO telephoto lens can be transformed into a compact astronomical telescope, a guide scope or a powerful spotting scope for landscape observation.

♦ Aperture 40 mm

♦ Air-spaced triplet ED lens for almost pure color image

♦ Photographic focal length 180 mm (with corrector) - focal ratio f/4.5

♦ 2" filter thread in front of the objective for nebula filters

♦ Focal length for observation 220 mm

♦ The photographic field of view is up to full frame size

♦ Precise helical focuser on the lens for accurate focusing - with locking mechanism

♦ T2 camera connection with 55 mm working distance (when used as telephoto lens)

♦ Weight only 395 grams

♦ Can easily be attached to the telescope instead of the finder

♦ Fits on any ball head - also ideal for mobile astrophotography with photo trackers like the Skywatcher Adventurer

♦ Ideally suitable also as mini guide telescope

♦ The FMA180 can be converted into a compact spotting scope for observation in just a few steps


 

Askar FMA180 Astrograph and Triplet Apo

The FMA180 from Askar is an almost pure color triplet APO refractor with two special ED glasses for excellent correction. The high-quality optics produce a very (though not perfectly) pure colour and high-contrast image and meet high demands in astrophotography and observation.

With the special F4.5 full-frame corrector, the ASKAR FMA180 with 40 mm aperture and 220 mm (f/4.5) focal length becomes a professional APO telephoto lens with 180 mm focal length for both landscape and astrophotography. The internal blackening and the elaborate multi-coating ensure high-contrast and brilliant images without reflections even under difficult lighting conditions. The use of 2" nebula filters is also possible, thanks to the filter thread in front of the lens.
 

The FMA 180 mm f/4.5 as telephoto lens

The manual APO telephoto lens is corrected up to full frame size. Starting with the T2 thread you have a working distance of 55 mm. Ideal for system cameras, DSLR and of course astro cameras. The telephoto lens is so compact that it can also be used handheld. The high speed of f/4.5 allows short exposure times even under difficult lighting conditions.
 

The FMA 180 f/4.5 as an astrograph

Astrophotographers will be delighted with the compact telephoto lens. Stars up to the edge of the image are shown crisply sharp. With 55 mm working distance you can connect all common cameras. The distance can be extended to 99 mm. The multi-functional mount allows easy adaptation to the finder shoe of your telescope or to an attachable camera mount via the 1/4" female thread.
 

{The FMA 180 as APO refractor and mini guide scope

The lens provides sufficient working distance for a 1.25" star diagonal mirror and standard 1.25" eyepieces. You can make wonderful wide-field observations or simply connect an autoguider and track your telescope cleanly.
 

The FMA 180 as spotting scope

The high-contrast optics allow exciting animal and landscape observations. With just a few simple steps, you can turn the telephoto lens into a compact and crisply sharp spotting scope. You can use all common photo tripods, the adapter is already included.

 

Aperture:	40 mm
Objective:	Air-spaced triplet APO objective (2 special glasses)
Focal length of the objective:	220 mm
Reducer:	3-element reducer and corrector for photography
Photographic focal ratio:	f/4.5 with corrector
Length:	145 mm
Weight:	395 grams
Camera connection:	M42x0.75 thread
Working distance:	55 mm from the M48 thread
Visual connection:	1.25"
Filterthread:	M48x0,75 female thread for 2" filters in front of the objective

In the box:
♦ Askar 180 mm triplet lens in tube
♦ Helical focuser
♦ Corrector and reducer
♦ 2x extension tube (M42x0.75 - T2 thread)
♦ 1.25" adapter
♦ Adjustable tube rings with universal adapter plate
♦ Multifunctional adapter for finder shoe and photo tripod and Arca-Swiss style mount