Celestron 45-Degree Erect Diagonal (1.25") CMC Pro TDMR-WPP-SK16 2 x AAA Batteries

2 x AAA Batteries

solder them in place

The Electret Mic Breakout translates amplitude (not volume) by capturing sound waves between two conducting plates (one a vibrating diaphragm and the other fixed) in the microphone and converting them into electrical waves

Helps to Eliminate Reflections and Glare

Celestron 45-Degree Erect Diagonal (1.25") CMC Pro TDMR-WPP-SK16 2 x AAA BatteriesUpright & Laterally Correct Observing Celestron's erect image diagonals are Amici prism designs, allowing you to look into the telescope at a 45 angle at images which are upright and laterally correct. This is extremely comfortable for terrestrial viewing or when sharing the viewing experience between those of varying heights, and comes at the expense of a loss in brightness versus a 90 diagonal which would show images upright but laterally reversed.