Star-Trail - Eastern Horizon (SAMUEL MARCOS APARECIDO MOITINHO)

Star-Trail - Eastern Horizon

The color of the stars is linked to their "superficial" temperature (in quotation marks because the stars do not actually have surfaces, since they are not solid or liquid) - and, contrary to common sense where we associate blue with cold and red in the heat, the bluish / violet ones are the hottest, while the red ones are the coldest - The stars with peak emission in other bands of the visible spectrum have intermediate surface temperatures. Thus, we have stars with peak emission in practically the entire visible spectrum: blue, white, yellow, orange, red ...

Star-trails facilitate the perception of colors, since the stars are no longer punctual objects.

Star-trail - eastern horizon

Uberlândia / MG

05/28/2020 - between 9 pm and 10 pm

Canon EOS 6D modified

Bower 35mm F1.4, opened in F1.4

118x14s, ISO 800

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A cor das estrelas está ligada à sua temperatura "superficial" (entre aspas pelo fato de as estrelas não apresentarem superfícies de fato, já que não são sólidas ou líquidas) - e, contrariando o senso comum onde associamos o azul ao frio e o vermelho ao calor, as azuladas/violetas são as mais quentes, enquanto as vermelhas são as mais frias - As estrelas com pico de emissão em outras bandas do espectro visível apresentam temperaturas superficiais intermediárias. Assim, temos estrelas com pico de emissão em praticamente todo o espectro visível: azuis, brancas, amarelas, laranjas, vermelhas...

Star-trails facilitam a percepção das cores, já que as estrelas deixam de ser objetos pontuais.

Star-trail - horizonte leste

Uberlândia/MG

28/05/2020 - entre 21 e 22h

Canon EOS 6D modificada

Bower 35mm F1.4, aberta em F1.4

118x14s, ISO 800

	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
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Unknown

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