Seestar S50 is equipped with three built-in filters: UV/IR Cut filter, dark filter, and dual-band anti-light pollution filter (OIII 30nm/Hα 20nm). The switching of the dark filter is automatically controlled by Seestar. As for the UV/IR Cut filter and light pollution filter, users can switch between them in the app based on their own needs.

With its built-in anti-light pollution filter and good enough atmospheric transparency, Seestar S50 is able to shoot deep-sky objects even in city.However, if we want to get good enough results, we still need to go to a dark site. We define the degree of light pollution into different levels. The larger the number is, the heavier the light pollution is. ZWO provides simple photos under different levels of light pollution after testing. We can compare them by ourselves. Also, don’t forget that the moon is the biggest light pollution source at night, we must avoid such a time period as the full moon.

Seestar S50 battery has a rated capacity of 6000mAh, and the battery life verified by ZWO laboratory is about 6 hours.Tips: in actual use, the battery life performance will be different due to the difference in ambient temperature, operation process, and shooting target, especially after the fog removal function is turned on, the battery life will be significantly shortened.