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Askar Guiding Ring Set for FMA180 Guidescope (Set of 2 Rings) #GR40

Askar Guiding Ring Set for FMA180 Guidescope (Set of 2 Rings) #GR40 is a stylish and elegant guiding ring with three-point collimation function. It can perfectly fit the Askar FMA180 to achieve ideal guiding effect. Though it’s designed mainly for FMA180, it’s suitable for tubes with a diameter of less than 50mm.

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