都看到金星合土星了吗？
- 主题发起人 asdfqwer
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uglyduckling
移夜掷球
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http://earthsky.org/tonight/best-venusjupiter-conjunction-in-years-mid-march-2012
Best Venus-Jupiter conjunction in years in mid-March 2012
The whole world can see the two bright lights in the west after sunset now, but, for the Northern Hemisphere, mid-March 2012 presents the best time to see a Venus-Jupiter conjunction in the evening for years to come. At mid-northern latitudes, these two brightest planets – Venus and Jupiter – stay out for nearly four hours after sunset. That’s about the longest period possible at these latitudes. No matter where you are on Earth now, you can’t miss these two worlds in the west as darkness falls.
And in the opposite direction at nightfall – looking east – you can’t miss the ruddy planet Mars. This world won’t be so brilliant in our sky again until April 2014. Mars shines from dusk till dawn, whereas Venus and Mars set four hours after sunset at mid-northern latitudes.
How to see Mars in March 2012
March 15, 2012 presents the exact date of conjunction, when these two worlds have the same right ascension (like longitude on Earth) in Earth’s sky. But Venus and Jupiter are close throughout the month of March 2012. They are like twin beacons – two very bright planets – near each other in the west as soon as the sun goes down.
Best Venus-Jupiter conjunction in years in mid-March 2012
The whole world can see the two bright lights in the west after sunset now, but, for the Northern Hemisphere, mid-March 2012 presents the best time to see a Venus-Jupiter conjunction in the evening for years to come. At mid-northern latitudes, these two brightest planets – Venus and Jupiter – stay out for nearly four hours after sunset. That’s about the longest period possible at these latitudes. No matter where you are on Earth now, you can’t miss these two worlds in the west as darkness falls.
And in the opposite direction at nightfall – looking east – you can’t miss the ruddy planet Mars. This world won’t be so brilliant in our sky again until April 2014. Mars shines from dusk till dawn, whereas Venus and Mars set four hours after sunset at mid-northern latitudes.
How to see Mars in March 2012
March 15, 2012 presents the exact date of conjunction, when these two worlds have the same right ascension (like longitude on Earth) in Earth’s sky. But Venus and Jupiter are close throughout the month of March 2012. They are like twin beacons – two very bright planets – near each other in the west as soon as the sun goes down.
怎么玩？说说，
多谢科普。
我家小子特爱看星星，:blink:。可惜我俩认识的星星很少。
怎么玩？说说，
从科普杂志上定购的物镜和目镜，那个时候没钱定做铝镜桶，只能自己用大画报加浆糊多层绕制，内壁刷黑。然后弄几个木棍作架子。由于没有找物镜，要花很长时间定位，加上严重的色差，后面没有再玩了。
谢谢谢谢。
刚才google了一下，还挺多挺详细的。等小子再大点，诱他一起做。
你要是想培养他，还是建议你买成品的（不要太便宜了），否则严重影响观看效果，小朋友容易失去兴趣。我小时候是穷玩，没办法
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刚从PARK回来那两颗星太显眼了，以为那个亮的是北极星呢，还奇怪怎么没看到勺子呢，多谢扫盲，连东西南北都不分了:blowzy:
