补充
发表于 2025-3-23 12:40:27
Heinrich Schippergesut what to look for when buying. Part Two describes how best to use the telescope, which celestial objects to observe (with full-page star charts to help find them), what you can expect to see, and how to take and even computer-enhance astronomical photographs.978-1-4471-3765-8
enflame
发表于 2025-3-23 16:03:50
ass of instrument can make amateur astronomy more accessible to those with limited time at their disposal. It also discusses the new breed of mid-range digital cameras that include powerful on-board processing 978-1-4614-2160-3978-1-4614-2161-0Series ISSN 1431-9756 Series E-ISSN 2197-6562
rectocele
发表于 2025-3-23 21:15:09
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遗弃
发表于 2025-3-23 23:28:37
Heinrich Schippergeste of the remarkable developments and achievements in this field of astronomical research, there had been no specific opportunity for the experts to meet together, make the point on the state of the art, discuss and coordinate future plans. Therefore, Prof. L. Rosino, one of the pioneers in the use
CUMB
发表于 2025-3-24 04:01:46
Heinrich Schippergesction of these plates, including those for the southern and equatorial Sky Surveys, are on Eastman Kodak IIIa-J emulsion. A significant number of these processed IIIa-J plates have developed many small gold spots similar in size to faint star images. They are most likely to occur in areas of relativ
inferno
发表于 2025-3-24 10:15:16
Heinrich Schippergesreflector on an altazimuth Dobsonian or equatorial mount, or perhaps a fork-mounted 125mm (5-inch) or 200mm (8-inch) Schmidt-Cassegrain catadioptric. However, the sheer bulk of such telescopes and time required to set them up and to allow for adequate athermalization (i.e., reaching thermal equilibr
inhibit
发表于 2025-3-24 12:42:50
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Conducive
发表于 2025-3-24 16:18:30
Heinrich Schippergesll-page star chart for every object listed, showing where toSir Patrick Moore, CBE, FRS has long been the scourge of those people selling low-cost astronomical telescopes via mail-order catalogues and non-specialist stores. Ten years ago the quality was appalling and disappointment would have been a
Incisor
发表于 2025-3-24 20:20:13
Heinrich Schippergesll-page star chart for every object listed, showing where toSir Patrick Moore, CBE, FRS has long been the scourge of those people selling low-cost astronomical telescopes via mail-order catalogues and non-specialist stores. Ten years ago the quality was appalling and disappointment would have been a
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发表于 2025-3-25 01:29:03
-to‘ telescopes, now falling into the"budget" category.An id.Astronomy with a Budget Telescope, 2nd Edition. is a complete introduction to buying and using a low-cost amateur astronomical telescope. It provides essential hints and tips about what to look for when buying on a budget - the best are no