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Home / Products / Astronomy Eyepiece / 1.25″ Plossl Eyepiece 3.6mm-40mm for 1.2
1.25″ Plossl Eyepiece 3.6mm-40mm for 1.25″ Astronomy Telescope

1.25″ Plossl Eyepiece 3.6mm-40mm for 1.25″ Astronomy Telescope

1.25 inch Plossl eyepieces (3.6mm to 40mm) from Nanjing AMADA Instrument are designed for astronomy telescopes with standard 1.25 inch barrels. The series features a 4-element optical design with a 52 degree apparent field of view, long eye relief, and all-metal construction for durability. Each eyepiece is threaded for 1.25 inch filters and Barlow lenses, and comes with a protective plastic case and rubber eye guard.

  • 4-element Plossl design delivers sharp images and wide 52 degree apparent field of view
  • All-metal construction ensures durability and consistent performance under field conditions
  • Threaded barrel accepts standard 1.25 inch filters and Barlow lenses without adapters
  • Long eye relief and rubber eye guard improve comfort during extended viewing sessions
  • Protective plastic case prevents dust and moisture damage when not in use
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Technical features

  • Focal lengths: 3.6mm, 4mm, 6mm, 6.3mm, 10mm, 12.5mm, 20mm, 25mm, 32mm, 40mm
  • Apparent field of view: 48° (consistent across all models)
  • Exit pupil distance: 14mm to 18mm depending on focal length
  • Film system: FC (compatible with standard 1.25 inch camera adapters)
  • Threaded barrel for 1.25 inch filters and Barlow lenses
  • Rubber eye guard with bayonet mount for secure fit
  • Sturdy plastic case included for storage and transport
  • All-metal body construction for long-term reliability

Who it is for

  • Amateur astronomers using 1.25 inch telescope systems
  • Importers sourcing accessories for astronomy equipment kits
  • Distributors building a range of telescope eyepiece options for retail or educational markets

Specifications

ModelMJ-PL-01 to MJ-PL-16
Focal Length3.6mm, 4mm, 6mm, 6.3mm, 10mm, 12.5mm, 20mm, 25mm, 32mm, 40mm
Apparent Field of View48°
Exit Pupil Distance14mm–18mm
Barrel Size1.25 inch
Filter ThreadStandard 1.25 inch
Film SystemFC
ConstructionAll metal

Use guide

  • Select focal length based on desired magnification and field of view for target observation
  • Use shorter focal lengths (3.6mm–10mm) for planets and lunar details
  • Use longer focal lengths (20mm–40mm) for wide-field deep-sky objects and star clusters
  • Attach filters or Barlow lenses using the threaded barrel without adapters
  • Store in the included plastic case when not in use to prevent dust and moisture damage

FAQ

What focal lengths are available?
3.6mm, 4mm, 6mm, 6.3mm, 10mm, 12.5mm, 20mm, 25mm, 32mm, and 40mm.
Are these eyepieces compatible with 1.25 inch filters?
Yes, all models are threaded for standard 1.25 inch filters and Barlow lenses.
What is the apparent field of view?
48 degrees for all models in the series.
Do they come with a protective case?
Yes, each eyepiece includes a sturdy plastic case for storage and transport.
What material is used in the body?
All-metal construction for durability and consistent thermal performance.

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