Cloud Break Optics

M-250CRS Corrected Mewlon-CRS Telescope

M-250CRS Corrected Mewlon-CRS Telescope - Main image
$5990.4 $8320 In stock

Category: Catadioptric Telescopes

Description

Takahashi’s CRS series of Mewlon telescopes leads the industry in advanced design and optical quality.  At their heart is the Dall-Kirkham Cassegrain telescope design, coupled with a corrector that provides Ritchey–Chrétien like performance.  With the CRS series, Takahashi has added a 3-element corrector plate made from ED glass, converting the telescope to a flat field instrument for imaging and visual observation.  In addition, the CRS series has an electronic focusing system controllable with an ASCOM driver or in an autofocus mode.  Each CRS telescope features a primary mirror cooled by 3 fans.

Mewlon-250 CRS

The Mewlon-250 CRS is a 250 mm aperture telescope in an f/10, 2500 mm instrument.  With the optional reducer, the Mewlon-250 CRS can be converted to an f/7.3 telescope.  The Mewlon-250 CRS comes with a built-in 7x50 finder scope.

Mewlon-300 CRS

The Mewlon-300 CRS is a 300 mm aperture telescope in an f/9.9, 2960 mm instrument.  With the optional reducer, the Mewlon-300 CRS can be converted to an f/7.2 telescope.  The Mewlon-300 CRS comes with a built-in 7x50 finder scope.

Specifications

Telescope

Mewlon-250CRS Mewlon-300CRS

Part Number

TLK25300 TLK30310

Aperture

250 mm 300 mm

Resolution

0.46" 0.4"

Limiting Magnitude

13.8 14.2

Light Gathering Power

1276X 1827X

Focal Length

2500 mm 2960 mm

Focal Ratio

f/10.0 f/9.9

Image Circle Diameter

40 mm 40 mm

Optical Type

Dall-Kirkham Cassegrain Dall-Kirkham Cassegrain

Tube Diameter

280 mm 324 mm

Tube Length (With Lens hood retracted)

945 mm 1045 mm

Tube Weight

12.0 kg 27.0 kg

Recommended Finder

7x50 7x50

Metal Back Distance

147.9mm 189.5mm

Telescope Specifications 

Mewlon-250CRS System Chart

Mewlon-250CRS System Chart with 1.5X Extender

Mewlon-300CRS System Chart

Mewlon-300CRS System Chart with 1.5X Extender

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Customer Reviews (5.0 / 5 · 5 reviews)

Sebastian Z. ★★★★★

The corrected optics in this CRS version really sharpen up the star images compared to standard Mewlons. I’ve been using it for lunar detail and the contrast is noticeably better even at high power.

Grace B. ★★★★★

I’d been reading up on the Dall-Kirkham design for months, and the corrected optics on this model live up to every word. First light was incredibly sharp even at high power, with almost no coma. Just wish it came with a finder.

Ellie P. ★★★★★

The Dall-Kirkham design really delivers on contrast — even my first look at Saturn showed subtle banding I've never seen in a smaller scope. The included corrector plate seems to do its job, keeping the view clean right to the edge. Very pleased with this upgrade.