According to Wikipedia; the term blue moon is usually used to describe a second full moon in a single solar calendar month, which happens every two to three years.
Owing to the rarity of a blue moon, the term “blue moon” is used colloquially to mean a rare event, as in the phrase “once in a blue moon”
All this talk about blue moons is by way of introducing our forth-coming Blue Moon tonight Aug 20th~21st – not a solar calendar month this time.
It’s possible to get reasonably good photographs of the moon even on fairly basic cameras with fairly basic lens if there’s a manual setting available.
To get detail and sharpness on the moon…
- open up the aperture to about 2 stops from its widest
- increase the ISO to the highest your sensor can tolerate without introducing noise
- use the fastest shutter speed available
- use a tripod
- use a remote shutter release or the timer to avoid camera shake
- compensate by under exposing by three to five stops, depending on how the moon fills the frame
- if the resulting image is still soft, lock open the mirror before taking the shot
Remember the earth is rotating and the resulting image will be soft if the shutter is open long enough to pick up this movement.
I switch my camera to manual metering and manual focus for this type of shot.
On a clear night or even a night with light cloud, the moon is an extremely bright object against a dark night sky.
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