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Mewlon-180C reflector

Dall-Kirkham Mewlon series reflectors are long focal length telescopes with high F/D focal ratio.

Dall-Kirkham Mewlon series reflectors are long focal length telescopes with high F/D focal ratio. The primary mirror is ellipsoidal while the secondary mirror is spherical. The surface accuracy of the optics is at least λ/20.

The Mewlon-180C is the most compact of the range. Easily transportable, it does not require a large mount to operate. Its F/12 focal ratio is primarily intended for planetary imaging but it remains versatile during observations. The focus, achieved by translating the primary mirror, is very smooth and very precise. The integrated 6x30 scope finder is adjustable and will serve as a handle for transport.

The telescope is delivered with a male and a female dovetails (TKP71422), both Vixen-type.

Specifications

Optical specifications
Optical design Dall-Kirkham reflector
Combination Concave elliptical primary mirror + convex spherical secondary mirror
Diameter 180 mm
At prime focus
Focal length 2160 mm
Focal ratio F/12
Metal Back Distance 67.2 mm
With focal reducer FL RD 0.8X
Focal length 1760 mm
Focal ratio F/9.8
Image circle diameter 30 mm
Metal Back Distance 56.2 mm
Mechanical specifications
Length of the optical tube assembly 625 mm
Diameter of the optical tube assembly 210 mm
Weight 6.2 kg

Spot diagrams

Mewlon-180C reflector at prime focus

Spot-diagram Takahashi Mewlon-180C Dall-Kirkham reflector at prime focus

Mewlon-180C reflector with FL RD 0.8X

Spot-diagram Takahashi Mewlon-180C Dall-Kirkham reflector with FL RD 0.8X focal reducer

System-charts

Mewlon-180C main system-chart Download  

Instruction manuals

Mewlon-180C instruction manual Download