吉里戈里 – 恒星涂鸦画

2023年8月12日

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

吉里戈里 – 恒星涂鸦画
影像提供与版权: Paolo Palma

说明: 在天空的画布上涂鸦相当有趣。你可以用具有创意的摄影技术，在进行曝光时轻敲望远镜，让恒星的点状光影在数字影像上跳动。其成果将是一道由恒星曳出、带着恒星色泽的曲线（或由双星曳出的两道曲线）。在上面这张马赛克艺术画里，这种五颜六色的线条称为Ghirigori（吉里戈里），参与创作者则为北天牧夫座、北冕座、蛇夫座和后发座的恒星。产生这些色彩缤纷多变涂鸭的25颗恒星，其名称标示在此画的边缘。想当然耳，温度决定恒星的色泽。其中，泛白恒星的温度与太阳温度相当，较蓝的恒星比太阳热，泛黄和泛红的恒星比太阳冷。 （Ghirigori 吉里戈里）

周末观赏: 英仙座流星雨

明日的图片: a tip of the sombrero