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 1.25", 90° Amici prism](/Produktbilder/normal/54412_1/Omegon-1-25-90d-Amici-prism.jpg)
Omegon
1.25", 90° Amici prism
( 5 / 5 )
$ 29.90
ready for shipping in 24
h
![Omegon 1,25'' Amici Prism 90°](/Produktbilder/normal/14172_1/Omegon-1-25-Amici-Prism-90d.jpg)
Omegon
1,25'' Amici Prism 90°
( 5 / 5 )
$ 169.00
ready for shipping in 24
h
![Omegon Amici prism 90° 2"](/Produktbilder/normal/74413-(1)/Omegon-Amici-prism-90d-2-.jpg)
Omegon
Amici prism 90° 2"
$ 269.00
ready for shipping in 24
h
![Omegon Pro Penta Prisma 90° 1.25''](/Produktbilder/normal/57292_3/Omegon-Pro-Penta-Prisma-90d-1-25-.jpg)
Omegon
Pro Penta Prisma 90° 1.25''
$ 239.00
ready for shipping in 24
h
![Omegon 45°, 2'' to 1.25'' Amici prism](/Produktbilder/normal/33298_1/Omegon-45d-2-to-1-25-Amici-prism.jpg)
Omegon
45°, 2'' to 1.25'' Amici prism
$ 219.00
ready for shipping in 24
h
![Omegon Pro 1.25'', 45° penta-prism](/Produktbilder/normal/57293_3/Omegon-Pro-1-25-45d-penta-prism.jpg)
Omegon
Pro 1.25'', 45° penta-prism
$ 189.00
ready for shipping in 24
h
![Omegon Pro 90 degree mirror diagonal 2](/Produktbilder/normal/76676_1/Omegon-Pro-90-degree-mirror-diagonal-2.jpg)
Omegon
Pro 90 degree mirror diagonal 2
$ 179.00
ready for shipping in 24
h