旧式步枪
发表于 2025-3-25 06:51:25
https://doi.org/10.1007/978-3-322-88217-2 eyepiece? Do you want to evaluate the optical quality of your ‘scope? This chapter addresses all these issues and helps you get the maximum performance for your hard-earned investment. Let’s begin with the age-old Newtonian chestnut – collimation – and how best to execute a near perfect alignment o
CANDY
发表于 2025-3-25 10:03:37
Vom liberalen zum sozialen Privatrecht?, open clusters, and faint galaxies that skirt the great dark of interstellar space. The spectacular light-gathering power of even an 8-inch or 10-inch ‘scope has inspired many amateurs to try their hand at astronomical sketching and astrophotography. This chapter explores some of the extraordinary a
BRAVE
发表于 2025-3-25 14:46:57
Sarah Jäger,Arnulf von Schelihaover 30 years on the streets of San Francisco right up to the proliferation of designs commercial Dobs now embody. It is extraordinary that an eccentric man with a passion for putting together a large telescope from leftover junk would one day go on to inspire generations of amateur astronomers and
制定法律
发表于 2025-3-25 17:27:19
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Flounder
发表于 2025-3-25 23:11:57
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FLASK
发表于 2025-3-26 01:45:47
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CAMEO
发表于 2025-3-26 05:35:07
https://doi.org/10.1007/978-3-8348-9169-3What’s the ideal starter ‘scope? Well, it should have decent optics, be portable enough to set up in just a few minutes, and have enough light grasp to bag many of the brighter treasures of the night sky.
毛细血管
发表于 2025-3-26 11:28:37
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ambivalence
发表于 2025-3-26 14:43:45
The Mini-DobsWhat’s the ideal starter ‘scope? Well, it should have decent optics, be portable enough to set up in just a few minutes, and have enough light grasp to bag many of the brighter treasures of the night sky.
称赞
发表于 2025-3-26 19:41:06
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