Objective Lens, Cemented Glued Lenses Achromatic Lens for Refracting Astronomical Telescope Objective 70mm Series F280 F400 F700,for Doublet Convex Lens(D73F400 Green Film)

★★★★★ 4.8 142 reviews

$114.78
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$114.78
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Free shipping Free 30-day returns

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Product details

Management number 219364921 Release Date 2026/05/03 List Price $45.91 Model Number 219364921
Category

=========High-concerned chemical : None

  • Made optical glass with precision polishing, ensuring stable performance and long service life.
  • This 70mm series achromatic cemented lens comes in F280, F400 and F700 focal lengths, designed as objective lens astronomical telescopes.
  • The cemented achromatic structure effectively corrects chromatic aberration, delivering sharp, high-contrast images for clear and celestial observation.
  • Made optical glass with fine polishing, it ensures high light transmittance, low distortion and stable optical performance.
  • Multiple focal length options meet different observation needs, perfect telescope assembly, modification and upgrading.
  • Standard 70mm caliber provides good compatibility, easy to install and ideal for astronomy enthusiasts to build homemade refracting telescopes.
Brand Generic
Color D73f400 Green Film
Model Name OBFBVOFBM-D73F400GREENFILM
Unit Count 1.0 Count
Manufacturer Generic
Model Number OBFBVOFBM-1AC6A399
Minimum Focal Length 1 Centimeters
Manufacturer Part Number OBFBVOFBM-1AC6A399

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4.8 out of 5
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142 ratings | 58 reviews
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