Astronomical Telescope Accessories, 50 51 52 53 57 58mm Cemented Doublet Objective Lens Achromatic Optical Focal Length 182mm-987mm DIY Refraction Telescope,for Used in Astronomy(51F182 Green Film)

★★★★★ 4.8 62 reviews

$67.66
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Management number 221804474 Release Date 2026/05/03 List Price $27.06 Model Number 221804474
Category

=========High-concerned chemical : NoneModel Number : YT102319121Diameter : 50 51 52 53 57 58mmfocal length : 182mm-987mm

  • Lens edges blackened and internal matte threads effectively suppress stray light and glare, improving image contrast and making faint celestial objects easier to identify.
  • Available in sizes of 50mm, 51mm, 52mm, 53mm, 57mm and 58mm, these cemented doublet achromatic lenses fit DIY assembly of refractor telescopes.
  • With focal lengths ranging from 182mm to 987mm, they adapt to diverse optical designs for homemade astronomical telescopes.
  • The cemented doublet structure achieves achromatic effect, reduces light dispersion and optimizes optical imaging performance.
  • Made of professional optical glass, they are ideal for part replacement and modification of telescope assemblies.
  • Multiple size options match various inner diameter tubes and meet assembly needs of different refractor telescopes.
  • Multi-group multi-element optical glass construction with broadband anti-reflection coating on surfaces, effectively increasing light transmission and reducing reflection loss, delivering bright and sharp imaging.
Brand Generic
Focus Type Auto Focus
Model Name DHAHGHEFF-51F182GREENFILM
Finderscope Reflex
Manufacturer Generic
Model Number DHAHGHEFF-8ABDD6A0
Objective Lens Diameter 1 Millimeters
Manufacturer Part Number DHAHGHEFF-8ABDD6A0
Item Dimensions D x W x H 3.94"D x 3.94"W x 3.94"H

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