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APM 140mm f/7 Doublet OTA with 3.7" ZTA Rotation Focuser

SKU : AM-140-7-3.7ZTA

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  • Very high quality processed and of convincingly good optical quality
  • Colorless optics with FLP53 glass
  • Precise 3.7″ focuser with 1:10 Mirco reduction for heavy accessories
  • With f / 7 ideal for visual and photographic purposes

Product Details

  • The APM 140mm f/7 Doublet is a mold-breaker with high quality. We have painstakingly engineered an optical and tube solution to bring you APM quality at an unheard of price. The new 140-SD Apo features a Doublet lens cell using SD glass FPL-53 to maximize performance. Our innovative combination of materials and design has resulted in optical performance far beyond the normal for a telescope of this price. As with all APM telescopes, consistency is assured and each telescope goes through an interferometrical test at 532nm (green) wavelength before shipping.

    With 980mm focal length, the 140-SD APO is an impressive all-rounder. From intricate double star observing to high contrast detailed planetary views, this new scope will introduce a whole new group of Astronomy enthusiasts to APM quality.

    Traditional APM quality has been applied in all areas. The new 3.7″ focuser is a Rack and Pinion type, with 1:10 focusing. It remains rigid under high loads making it suitable for imaging. The attention to detail extends to areas like the 2″ and 1.25″ eyepiece adapters. These use a new design of collar clamp, far superior to the common brass compression rings found on lesser designs.

    With the new 140 mm SD APO, APM has created an Apochromatic Refractor of incomparable performance and value in its category.

  • specifications

    Aperture140mm (5.5")
    Dawes Limit0.83 arcseconds
    Focal Length980mm
    Focal Ratiof/7
    Highest Magnification280x
    Light Gathering Power400x
    Optical DesignDoublet Refractor
    Tube Diameter157 mm/9.37 inches
    Tube Length1030mm
    Tube Weight15.4 lb
  • included items

    • Optical Tube
    • 1 Pair of Tuberings with handle
    • 3.7″ Focuser with 1:10 Microfocusing
    • Losmandy-Style Dovetail
    • Shoe for Finderbracket
    • Hard case and custom foam

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