Astronomy Eyepiece

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

Name: 1.25" Plossl Eyepiece 3.6mm-40mm for 1.25" Astronomy Telescope
Brand: AMADA Microscope

The 1.25" Plossl eyepiece series offers a 4-element optical design with a 52-degree apparent field of view, suitable for lunar, planetary, and deep-sky observations.

Request A Quote Ask An Engineer

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

Product Overview

The 1.25" Plossl eyepiece series offers a 4-element optical design with a 52-degree apparent field of view, suitable for lunar, planetary, and deep-sky observations. Each model is threaded for standard 1.25-inch filters and Barlow lenses, with focal lengths from 3.6mm to 40mm. The all-metal construction and rubber eye guard provide durability and comfort during extended viewing sessions.

ModelMJ-PL-01 to MJ-PL-16
Size1.25"
Focal length3.6mm, 4mm, 6mm, 6.3mm, 10mm, 12.5mm, 20mm, 25mm, 32mm, 40mm
Apparent field of view52°
Actual field of view48°
Exit pupil distance14mm to 18mm

Email For Price Compare In Astronomy Eyepiece

Key Benefits

4-element Plossl design delivers sharp images across the field with a 52-degree apparent field of view
Threaded barrel accepts standard 1.25-inch filters and Barlow lenses without adapters
All-metal construction ensures long-term durability and thermal stability
14mm to 18mm exit pupil distance provides comfortable eye relief for eyeglass wearers
Soft rubber eye guard reduces glare and protects the eye from stray light
Sturdy plastic case included for safe storage and transport
Focal lengths from 3.6mm to 40mm cover high-power planetary viewing to wide-field deep-sky observation
Consistent 48° field of view across all models ensures predictable performance

Application Scenarios

Lunar observation with a wide field of view to capture craters and maria across the surface
Deep-sky imaging of medium-sized star clusters and nebulae under light-polluted skies
Planetary viewing with high magnification eyepieces like 3.6mm and 4mm
Field astronomy where quick eyepiece swaps are needed between targets
Telescope setup and alignment using a low-power 40mm eyepiece for star finding
Educational astronomy sessions where students need interchangeable eyepieces for different targets
Observing with a Barlow lens to extend magnification without changing eyepieces
Storage and transport of multiple eyepieces in a single protective case

Who It Is For

Amateur astronomers using 1.25-inch telescope systems
Educational institutions teaching observational astronomy
Amateur astronomy clubs conducting public star parties
Telescope users needing interchangeable eyepieces for different targets
Beginner to intermediate observers building a versatile eyepiece collection

Problems It Solves

A fixed eyepiece limits the observer to one magnification and field of view
Low-quality eyepieces introduce chromatic aberration and edge distortion
Lack of filter threading forces users to buy separate adapters for filters
Poor eye relief makes viewing uncomfortable for eyeglass wearers
Fragile plastic or mixed-material eyepieces fail under temperature changes
No protective case leads to scratches and dust damage during transport
Inconsistent field of view across models makes target tracking difficult
Short exit pupil distance causes eye strain during long observing sessions

Technical Features

4-element Plossl optical design with a 52-degree apparent field of view
Threaded barrel for standard 1.25-inch filters and Barlow lenses
All-metal construction for thermal stability and durability
Rubber eye guard with bayonet mount for secure fit and glare reduction
Exit pupil distance between 14mm and 18mm for comfortable viewing
Focal lengths available from 3.6mm to 40mm for flexible magnification
Consistent 48° field of view across all models
Film system: FC (compatible with standard film and digital imaging systems)
Sturdy plastic case included for storage and transport

Specifications

Model	MJ-PL-01 to MJ-PL-16
Size	1.25"
Focal length	3.6mm, 4mm, 6mm, 6.3mm, 10mm, 12.5mm, 20mm, 25mm, 32mm, 40mm
Apparent field of view	52°
Actual field of view	48°
Exit pupil distance	14mm to 18mm
Film system	FC
Optical design	4-element Plossl
Barrel threading	Standard 1.25-inch
Material	All metal
Eye guard	Soft rubber, bayonet mount
Included accessories	Sturdy plastic case

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Customization Options

Available in 10 standard focal lengths from 3.6mm to 40mm
All models share the same 1.25-inch barrel and threading
Same all-metal construction and rubber eye guard across the series
No option to change material, thread type, or field of view

Comparison With Other Options

2-inch Plossl eyepiece	The 1.25-inch model fits smaller telescope focusers and is lighter; choose 2-inch for wider fields on large aperture scopes
Plössl eyepiece with plastic barrel	The all-metal construction resists warping and thermal shift, while plastic barrels may degrade under temperature changes
Generic 1.25-inch eyepiece	This model has a consistent 52-degree apparent field of view and threaded barrel; generics often vary in field size and thread fit

Use Guide

Ensure the telescope focuser accepts 1.25-inch barrels before inserting the eyepiece
Insert the eyepiece fully into the focuser until it clicks or seats securely
Use the rubber eye guard to reduce glare and protect the eye during viewing
Do not force the eyepiece into a tight focuser; it may damage the threads
Clean lens surfaces with a soft cloth and lens cleaner if needed
Store the eyepiece in the included plastic case when not in use
Verify compatibility with Barlow lenses and filters using the threaded barrel
Swap between focal lengths to match the target's brightness and size