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URL: http://www.thaiexcite.com/Askar-FMA180-PRO-40mm-f-5.5-Triplet-Apo-Lens-Guidescope-FMA180PRO.html

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*PREORDER* เลนส์ถ่ายดาว Askar FMA180 PRO 40mm f/5.5 Triplet Apo Lens / Guidescope #FMA180PRO

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รายละเอียด

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เลนส์ถ่ายดาว Askar FMA180 PRO 40mm f/5.5 Triplet Apo Lens / Guidescope #FMA180PRO

• ASKAR FMA180 40mm aperture apochromatic telescope/camera lens features multiple optical configurations
• Uses three-element objective lens with two ED elements for superb color correction and image quality
• Configures as a finder/telescope/guide scope with a focal length of 220mm and focal ratio of f/5.5
• Includes three-element focal reducer and spacers to configure as a six-element f/4.5 apo telescope with focal length of 180mm for wide-field astronomical imaging
• Includes tube mounting rings, Vixen-style dovetail, and Swiss-Arca mounting plate for a wide range of mounting configurations

 

Askar FMA180 Pro vs FMA180 original:

• All new marked 360º rotator
• New one-piece internal focus system
• New finder base for attaching accessories like the ASIAIR
• Improved longer Vixen-style dovetail
• Upgraded metal knurled thumbscrews
• Larger M48x0.75 rear threads
• New filter thread adapter allowing 2" filters to be inserted

 

 

To provide customers with more options, Askar has launched the new FMA180 pro.

 

 

FMA180pro adopts a sextuplet air-spaced APO design with three lenses in front and three in the rear, two of which are ED glass,providing excellent correction of chromatic aberration, which lays the foundation for high-quality astrophotography and observation. It has an aperture of 40mm, a focal ratio of f/4.5, and a focal length of 180mm.

 

 

In addition to visual observations, the FMA180 pro is specially optimized for astrophotography. Compared to FMA180, FMA180 pro adds a finder base and a 360° rotator. What’s more, the focuser is designed as internal focusing which promotes its stability and ensures its performance in use as a delicate, high-quality, and compact astrograph.

 

 

 

The FMA180 pro comes with an M48 adapter at the rear end, and the back focus is the standard 55mm. The multifunctional base can not only be used for astrophotography but also be mounted onto other telescopes' finder bases as a finder scope after the Vixen dovetail plate is detached.

 

 

In a word, FMA180 pro is a compact astrograph for astrophotography with more integrated functions and a more dedicated design.