两栖动物
发表于 2025-3-23 11:03:26
Northern Spring (Southern Autumn) Nebulae,renices and Ursa Major dominate the northern sky. However, the folks in the southern hemisphere are treated to a very different “view.” During April and May they are observing in Centaurus, Crux and Carina. Lots of Milky Way goodies if your latitude has a negative sign.
Microaneurysm
发表于 2025-3-23 14:21:17
Northern Summer (Southern Winter) Nebulae,ow is the time to take on Scorpius and Sagittarius, both with lots of nebulous gas and dust clouds to enjoy. Don’t overlook the smaller constellations: Corona Australis and Vulpecula, as an example, have several excellent nebulae that are worth some of your time under dark skies.
被诅咒的人
发表于 2025-3-23 18:24:52
Steven R. CoeIn two parts: (i) a modern comprehensive review of the formation and morphology of the nebulae, and (ii) observing techniques for amateur astronomers.The very latest detailed theories and physical des
Dna262
发表于 2025-3-23 22:51:38
Astronomers‘ Observing Guideshttp://image.papertrans.cn/n/image/662342.jpg
栖息地
发表于 2025-3-24 05:04:48
https://doi.org/10.1007/978-1-84628-729-9Astronomer‘s; Coe; Nebulae; Observing; instruments; observing techniques
Agronomy
发表于 2025-3-24 09:20:55
http://reply.papertrans.cn/67/6624/662342/662342_16.png
使声音降低
发表于 2025-3-24 13:06:44
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angina-pectoris
发表于 2025-3-24 18:08:02
to chooseatelescope,howtoconstructanobservatoryforit,andhowtomakethe bestofitwhencompleted. Astronomyisthebestofallhobbies;itcantakeupasmuchtimeasyoulike– or as little. In any case, you will make many friends, and give yourself endless enjoyment. Tobeaproper“astronomer”youneedanobservatory,andthisbo
Obstacle
发表于 2025-3-24 21:06:35
neighbors to agree to it.Helps making the most costly decisTwo books in this series, Small Astronomical Observatories, have been widely read and used. This new book by David Arditti gives the full story – how to chooseatelescope,howtoconstructanobservatoryforit,andhowtomakethe bestofitwhencompleted
blight
发表于 2025-3-25 00:11:46
to chooseatelescope,howtoconstructanobservatoryforit,andhowtomakethe bestofitwhencompleted. Astronomyisthebestofallhobbies;itcantakeupasmuchtimeasyoulike– or as little. In any case, you will make many friends, and give yourself endless enjoyment. Tobeaproper“astronomer”youneedanobservatory,andthisbo