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Tutorials
About these Tutorials
Glossary
Practical
Choosing a First Telescope
Evaluating a Telescope
Polar Alignment
Basic Star Testing
Dealing with Dew
Colour Filters
Collimating a Refractor
Upgrading a 60mm Refractor
Optics
Telescope Function
How a Barlow lens Works
Astronomical Objects
Variable Stars
"Faint Fuzzies"
Mathematical Astronomy
Positional Astronomy
Time
Natural Phenomena
Tides
Twilight
Lunar Phases
Cosmology
Ancient Greek Astronomy
The Heliocentric Revolution
Stellar Evolution
The Scale of the Universe
Astrocrud
About Astrocrud
2012 Nonsense
The May 2000 "alignment"
Uriel's Machine
Dos Santos Pyramidiocy
Hancock Astronomy
Silbury Orrery
False Retrodiction
Flaws of Argumentation
Books
My Publications
Amateur Telescope Making
AstroFAQs
Binocular Astronomy
Small Telescopes
Amateur Spectroscopy
Articles, etc.
Recommended Books
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Astrophotography & Imaging
Beginners' Books
Charts, Atlases, etc.
Cosmology
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Mathematical Astronomy
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Practical Astronomy
Radio Astronomy
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Abrasive Size Comparison
Projects
Hand-driven Scotch Mount
Double-Arm Scotch Mount
4" f/5.35 Reflector
4" f/18 Refractor
Recce-camera Scope
Red-dot Finder
Courses
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Astronomical Unit > Tutorials >
