Sky-Watcher BKMAK 180 OTAW OTA (Skymax 180) — Maksutov–Cassegrain Optical Tube Assembly

Description

Technical Specifications

• Brand
  Sky-Watcher
• Model / MPN
  BKMAK 180 OTAW OTA / SW-3006
• Product type
  Optical Tube Assembly (OTA)
• Optical design
  Maksutov–Cassegrain (Skymax)
• Aperture (optical diameter)
  180 mm (reported true aperture ?182 mm)
• Primary mirror diameter
  ?199 mm (reported in some specs)
• Focal length
  2,700 mm
• Focal ratio
  f/15
• Secondary mirror diameter
  ?41 mm (reported)
• Central obstruction
  ?23% by diameter (~5% area)
• Resolution (Dawes limit)
  ?0.64"–0.95" (sources vary)
• Rayleigh limit
  ?0.78"
• Theoretical limiting magnitude
  ?13.8–14
• Highest practical magnification
  360? (manufacturer) / ?400? (retail listings)
• Minimum practical magnification
  ?26?
• Included eyepiece magnification
  ?96? with supplied 28 mm (2700/28 ?96?)
• Coatings
  Radiant Aluminum Quartz (RAQ) mirrors reported; MHTC corrector coatings; fully multi-coated optics (reported)
• Reflectivity
  Primary/secondary ?94% (reported)
• Glass
  BK7 / borosilicate (reported)
• Focuser
  Internal focusing (primary mirror shift)
• Focuser output
  2" accessory system with 1.25" adapter included
• Diagonal
  2" 90° star diagonal (included in typical listings)
• Finder
  8?50 (manufacturer) or 9?50 (many retailers)
• Mount included
  No (OTA only)
• Mounting interface
  Integrated dovetail / V-style rail
• Recommended mount
  EQ5-class or heavier for stable visual use; stronger mount recommended for astrophotography
• Tube diameter
  ?216 mm (?21.6 cm)
• Tube length
  ?50 cm (?58 cm including eyepiece connector, per different listings)
• Tube weight
  ?7.5–7.8 kg (product weight)
• Packaged / shipping weight
  ?10–15 kg reported (packaging varies); common shipping figure ?15 kg
• Packaged dimensions
  ?75 ? 30 ? 33 cm (reported)
• Color / finish
  Manufacturer standard white/black finish (confirm with seller)
• Accessories typically included
  28 mm 2" LET eyepiece, 2" 90° star diagonal, 1.25" adapter, 8?50 or 9?50 finder, integrated dovetail
• Use cases
  Lunar, planetary, double-star observation, high-resolution visual, compact DSO; astrophotography with suitable mount
• Safety note
  Not for solar observation without a certified front-mounted solar filter
• EAN / GTIN
  5901691604742
• SKU
  WLONONWCRDHSC
• Series
  Maksutov Signature Series

Ratings