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Astronomical question and answer 235

 

Frank L. Preuss

 

Can one see the moon, one day after new moon?

 

Today I watched the sun rise and could see no moon, but I really want to watch the sunset today, because I have a greater chance to see the moon then, because I could still see it after sunset, when it gets dark.

The sun is now just over the western horizon, and I see no moon. I now feel a little more experienced looking out for the moon than a month ago, but I see no moon. Higher up the sky is completely clear, but the closer it gets to the horizon, the hazier it gets.

The sun has now set and I memorized the location of its setting. But this then proved to be of little help, because the horizon is no longer visible after a short while. I should have aligned my sights on a marked place on the window pane with the top of my standard lamp.

It is now more than half an hour after sun set and I have seen the first star, despite the lights of the city. The horizon is still reddish. I still see no moon, but I saw a beautiful sunset and the beautiful red glow of the sunset sky.

It is now three quarters of an hour after sunset and I now see a second star. The first one was Sirius. It is the brightest star - after the sun - and so it is natural that I saw it as the first one. The second star is Procyon. When Sirius is the brightest star, then Procyon is the eights brightest star. The brightness scale gives an impression of the brightness of heavenly bodies. There the star Vega is also listed, which has the brightness zero and is the fifth brightest star.

See Brightness.

 

This is the end of "Astronomical question and answer 235"
To the German version of this chapter: Astronomische Frage und Antwort 235

 

 

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