Filtre H-Alpha 5nm pour l'astronomie 2" - SVBONY telescope this essential accessory allows you

this essential accessory allows you to capture stunning celestial images without distortion of the stars at the edges of your photos

Note that it is not suitable for Newtonian reflector telescopes due to its length

Filtre SII 5nm 2" monté

Dimensions : 100 x 100 x 50 mm

Filtre H-Alpha 5nm pour l'astronomie 2" - SVBONY telescope this essential accessory allows youFeatures Benefits Compatibility Delivered items Type: H Alpha Filter Size: 2 inches Wavelength range: 300 to 1000 nm Central wavelength: 656. 3 nm Bandwidth: 5 nm Maximum transmission: 90% Substrate thickness: 1. 85 mm Blocking: OD5 Clear opening: 44 mm Surface quality: 60 40 Surface parallelism: 1 4 Parallelism: 30 Thread: M48x0. 75 Net weight: 12. 5 g Improve the contrast and details in astrophotography. Block harmful wavelengths caused by light