Svbony Variable Polarizing Filters Size:1.25" The integrated two-stage thermoelectric cooling

The integrated two-stage thermoelectric cooling system can reduce the sensor temperature by up to 86°F below ambient

Both sides with multi-layer anti-reflection coating

Sensitivity (digital)

For DSLR and dark-current-limited cameras

For the three most important emission lines of oxygen (OIII)

Svbony Variable Polarizing Filters Size:1.25" The integrated two-stage thermoelectric coolingSVBONY Variable Polarizing Moon Filter for 1. 25" & 2" Eyepieces The SVBONY Variable Polarizing Filter is an essential telescope accessory for comfortable lunar, planetary, and terrestrial observation. Acting like a precision dimmer switch for your eyepiece, it allows you to progressively reduce brightness and glare, making bright targets such as the Moon far easier to observe in sharp detail. Available in both 1. 25" and 2" formats, this premium