                        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.

                               2023 August 12

                         Ghirigori - Star Scribbles
                    Image Credit & Copyright: Paolo Palma

   Explanation: It's fun to scribble on the canvas of the sky. You can use
   a creative photographic technique to cause the light of point-like
   stars to dance across a digital image by tapping lightly on the
   telescope while making an exposure. The result will be a squiggly line
   traced by the star (or two squiggles traced by binary stars) that can
   reveal the star's color. Colorful lines, dubbed Ghirigori, made from
   stars found in the northern sky constellations Bootes, Corona Borealis,
   Ophiucus, and Coma Berenices, are captured in this artistic mosaic. The
   25 stars creating the varied and colorful squiggles are identified
   around the border. Of course, temperature determines the color of a
   star. While whitish stars tend to be close to the Sun's temperature,
   stars with bluer hues are hotter, and yellow and red colors are cooler
   than the Sun.

                    Weekend Watch: Perseid Meteor Shower
                  Tomorrow's picture: a tip of the sombrero
     __________________________________________________________________

       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Phillip Newman Specific rights apply.
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