Altair Lightwave 0.6x Focal Reducer - Enhance Wide-Field Astrophotography The filter itself consists of

The filter itself consists of ultra-thin layers on this substrate

Built-in lithium battery

so you don't have to wait all the time in front of the pizzeria

2 uA Battery: CR2032 * 2 Battery: 210mAh Package 1 * T128 watch 1 * USB cable 20 * TD017 call button 20 * Stickers

Are you bored with your complicated phone adapter

Altair Lightwave 0.6x Focal Reducer - Enhance Wide-Field Astrophotography The filter itself consists ofThe Lightwave 0. 6x focal reducer This reducer provides a 0. 6x reduction in F Ratio, resulting in faster exposure times and a wider field for Astro photography. It is designed for refractor telescopes with focal ratios of F6 or longer. Reduces and flattens the photographic field 38mm clear aperture Integral T Ring adapter thread Requires a back focus of 55mm to the CCD Chip For DSLRs, a standard T Thread adapter of approximately 10mm thickness is