This is one Planetary wide angle eyepiece with 4.5mm focal length and standard 1.25" (31.75mm)fitting diameter， ideal for use on telescopes/spotting scopes for astronomical observations. Primarily made for planetary observation， these 1.25" fully multicoated eyepieces give maximum detail and definition  across the entire 58 degree field of view. A great value， these eyepieces are exceptional at nearly eliminating lateral color aberration and light scatter often associated with more expensive eyepieces that are better suited for deep space objects.

Features:

1.Designed primarily for planetary observation and deep sky objects

2.Exceptional at nearly eliminating lateral color aberration and light scatter while retaining excellent sharpness， contrast and definition

3.Fully multi-coated green lenses for excellent image contrast and light transmission

4.Wide 58 degree field of view， fold-down rubber eyecup

5.Standard 1.25" fitting diameter to the scope's eyepiece holder

6.Standard 1.25" inner thread to fit light filters

7.Comes with lens caps for both ends

8.Focal length: 4.5mm

9.Large eye lens diameter: 21mm

10.Comfortable long eye relief: 15mm

11.Net Weight: 160g

Package Includes:

1 x SWA 1.25" 4.5MM 58-Degree Planetary Eyepiece

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