Go Out:  Look Up!

A Guide to the Sky, Telescopes, and Telescope Programs


 

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Lunar Eclipses

A lunar eclipse looks kind of like the 28-day phase of the moon in 3.5 hours, with a 1-hour full-shadow phase.  The depth of hue of the color is hard to predict because the Earth’s atmosphere always provides some illumination to the moon.

 

We're all familiar with what a normal Full Moon looks like. 

 

A fully eclipsed Full Moon, instead of white is some shade of red, orange or brown.  The Moon seldom passes through the dead center of the earth's shadow: one side tends to be brighter than the other.
Canon T3i DSLR through 700mm lens (William Optics FLT-98 (f/7), January 31, 2018

Although telescopes are the preferred tools for capturing lunar detail, the essence of a lunar eclipse can be captured very well with cameras with modest zoom lenses.  If the eclipse is close to the horizon, some really nice shots can be taken with stand cameras and even cell phones (cell phones cameras tend to have very wide-angle lenses, which makes the moon look very small.

This shot is with a DSLR a very light zoom (51mm on the standard 18mm-55mm lens).  The moon is partially out of the umbra and heading towards a moonset in La Jolla in January 2018.

A cell phone camera  is generally wider, but can be zoomed to this field with acceptable image quality loss.

If your eclipse occurs further from the horizon, you might need to be creative with foreground objects to make the wide angle shots interesting (your moon will remain small).

 

As the moon continued out of the shadow and approached the horizon, a tighter zoom produces an interesting composition.  Morning twilight washes the moon out and illuminates the ground
Shot with a Canon T3i DSL with a zoom lens at it's full 200mm.

 

   
Finally, back to the telescope for a closeup partial moonset.

 

 

 

 

 

Questions or comments? Email:Jeff Martin