Skip to content
  • Lunar Cycle & other Transits
  • Reflector Lunar Cycle as a Strategy
  • Human Design Beginners and Books list

4/6 Reflector PLL-DLR

unlocking the illusion

  • Home
  • Blog
  • About
  • Menu
4/6 Reflector PLL-DLR
unlocking the illusion
Home / Freedom / Crescent Moon HDR
Freedom

Crescent Moon HDR

ByBaffo 24 August 2020 20:3908 April 2025 13:31

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2020 August 24

Made from 14 light frames by Starry Sky Stacker 1.3.1. Algorithm: Mean

Crescent Moon HDR
Image Credit & Copyright: Miguel Claro (TWAN, Dark Sky Alqueva) (posted with permission)

Explanation: How come the crescent Moon doesn’t look like this? For one reason, because your eyes can’t simultaneously discern bright and dark regions like this. Called earthshine or the da Vinci glow, the unlit part of a crescent Moon is visible but usually hard to see because it is much dimmer than the sunlit arc. In our digital age, however, the differences in brightness can be artificially reduced. The featured image is actually a digital composite of 15 short exposures of the bright crescent, and 14 longer exposures of the dim remainder. The origin of the da Vinci glow, as explained by Leonardo da Vinci about 510 years ago, is sunlight reflected first by the Earth to the Moon, and then back from the Moon to the Earth.

Source: https://apod.nasa.gov/apod/ap200824.html

64
Post Tags: #Astronomy#Leonardo da Vinci#Moon#Nasa

© 2025 4/6 Reflector PLL-DLR - WordPress Theme by Kadence WP

  • Home
  • Blog
  • About
  • Menu
Search