Lens Warmer with Cold Flexible Cable -25°C 350mm Dew Heater Strip for Lens Dew, Fog and Condensation Resistant for Astrophotography Lens Heater Telescope and Camera 4.25", Black, Modern

Lens Warmer with Cold Flexible Cable Down to -25℃, 350mm Dew Heater Strip Prevents Lens from Dew, Fog and Condensation for Astrophotography, Lens Heater Compatible w/ Telescope and Camera in 4.26"

USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter

Astromania Bahtinov Mask Focusing Mask for Telescopes - FM60mm for a Tube Outer Diameter (OD) from 65mm-100mm - can be Mounted with The Brass Screws Inside or Outside The drawtube