Include:Dew Shield Cap Cover Bahtinov Mask Spike Diffraction 4 veins Spike Diffraction 6 veins.Bahtinov mask and divergence spikes can only be connected to the lens through the dew cover in the assembly, and cannot be directly installed on the lens.
Bakhtinov mask can make the light received by the lens form three rays on the lens. You only need to adjust your focus ring so that these three rays cross at one point, and perfect focus will be formed.
Diffraction Spike Mask Slide is used for cool fun effects on bright stars. Simply slide it in, then watch as stars get cool spikes.
You recieve the MASK DELUXE Dust Cover, which allows you to protect the optics of the Seestar S50. And yes, you can even power down the Seestar with the Dust Cover installed!
A rain cover can prevent your telescope optical system from fogging first. and the design of internal frosting can reduce the refraction of some light, allowing you to observe for hours with perfect angle.