Filter thread
![Left a 1.25" and right a 2" eyepiece with filter attached](/CMS/images/text/glossary/Okular Filtergewinde.jpg)
Use filters for your observing: most astronomical eyepieces offer you the option to use moon filters, polarizing filters, colour or nebula filters. This will improve your observing experience and reveal a number of details that were previously not visible to you. At the lower end of the eyepiece sleeve of your 1.25" and 2" eyepieces you will find a female thread. You can use this to attach any filter from our range.
![Omegon Oberon Barlow lens 2.5x 2”](/Produktbilder/normal/57296_1/Omegon-Oberon-Barlow-lens-2-5x-2r.jpg)
Omegon
Oberon Barlow lens 2.5x 2”
$ 159.00
ready for shipping in 24
h
![Explore Scientific Barlow Lens Focal Extender 2x 1,25"](/Produktbilder/normal/54035_1/Explore-Scientific-Barlow-Lens-Focal-Extender-2x-1-25-.jpg)
Explore Scientific
Barlow Lens Focal Extender 2x 1,25"
$ 117.00
ready for shipping in 24
h
![Explore Scientific Barlow Lens Focal Extender 3x 1,25"](/Produktbilder/normal/54036_1/Explore-Scientific-Barlow-Lens-Focal-Extender-3x-1-25-.jpg)
Explore Scientific
Barlow Lens Focal Extender 3x 1,25"
( 5 / 5 )
$ 129.00
ready for shipping in 24
h
![Explore Scientific Barlow Lens 3x2" focal extender](/Produktbilder/normal/60867_1/Explore-Scientific-Barlow-Lens-3x2-focal-extender.jpg)
Explore Scientific
Barlow Lens 3x2" focal extender
( 2 / 5 )
$ 218.00
ready for shipping in 1-2
weeks
![Explore Scientific Barlow Lens Focal Extender 5x 1,25"](/Produktbilder/normal/54037_1/Explore-Scientific-Barlow-Lens-Focal-Extender-5x-1-25-.jpg)
Explore Scientific
Barlow Lens Focal Extender 5x 1,25"
$ 140.00
ready for shipping in 1-2
weeks
![Tecnosky Four Elements 2x Apo-Barlow 1,25](/Produktbilder/normal/80913_1/Tecnosky-Four-Elements-2x-Apo-Barlow-1-25.jpg)
Tecnosky
Four Elements 2x Apo-Barlow 1,25
$ 117.00
ready for shipping in 1-2
weeks
![Celestron Luminos Barlow 2,5x 1,25"/2"](/Produktbilder/normal/33505_1/Celestron-Luminos-Barlow-2-5x-1-25-2-.jpg)
Celestron
Luminos Barlow 2,5x 1,25"/2"
$ 200.00
ready for shipping in 24
h
![Explore Scientific Barlow Lens 2x Focal Extender 2"](/Produktbilder/normal/51293_1/Explore-Scientific-Barlow-Lens-2x-Focal-Extender-2-.jpg)
Explore Scientific
Barlow Lens 2x Focal Extender 2"
$ 206.00
ready for shipping in 24
h