|
# |
Subject |
Title |
|
0 |
What is "Astrophysics" |
Astronomy
and Related Fields |
|
1 |
Astronomical Data Sources |
Electromagnetic
Spectrum |
|
2 |
Labeling the Sky |
Constellation
List |
Interactive
Constellation Charts |
|
3 |
Northern
Constellations |
|
4 |
Southern Constellations (1) |
Southern
Constellations (2) |
|
4.5 |
Nomenclature
of Astronomical Objects |
|
5 |
Astronomical Literature and Catalogs |
Astronomical
Journals |
|
6 |
Major
Astronomical Catalogs |
|
7 |
Messier's
Catalog |
|
8 |
Astronomical Coordinate Systems |
Coordinate
System Definitions |
|
9 |
Horizon
System |
|
10 |
Equatorial
System |
|
11 |
Ecliptic
System |
|
12 |
Galactic
Coordinate System |
|
13 |
Astronomical
Coordinate System Summary |
|
14 |
Position
Angle and Separation |
|
15 |
Spherical
Trigonometric Relations |
|
16 |
Time |
Julian Date |
Julian
Date Calculator |
|
17 |
Inverse
Julian Date Calculator |
|
18 |
Equation of Time |
The
Equation of Time Plotted |
|
19 |
Analemma
Over Ancient Nemea (φ
» 38°) |
|
20 |
Equation
of Time (and Solar Position) Calculator |
|
21 |
Zonal Time |
Global
Standard Time Zones |
|
22 |
US
Time Zones |
|
23 |
Daylight
Saving Time Start and Finish Dates |
|
24 |
The Seasons |
Season
Animation |
|
25 |
Duration
of the Seasons |
|
26 |
The
Seasons - 2009 |
|
27 |
Stellar Positions |
Causes of Apparent Variations |
Factors
Affecting Apparent Stellar Positions |
|
28 |
Absolute Position Measurements |
Absolute
Determination of Stellar Coordinates and Latitude of Observation |
|
29 |
Precession |
Precession
Animation |
|
30 |
Precessional
Path of the North Celestial Pole |
|
31 |
Eulerian
Angles for Coordinate Precession |
|
32 |
Derivation
of m and n for precession |
|
33 |
Nutation
|
|
34 |
Polar Motion |
Chandler
Wobble |
|
35 |
Chandler
Wobble Explained(?) |
|
36 |
Refraction |
A
Green Flash from the Sun |
|
37 |
An
Even Rarer Blue Flash from the Sun |
|
38 |
Oblate
Solar Image |
|
39 |
Rapid
Variations in Atmospheric Refraction |
|
40 |
Solar
"Twinkling" Pattern in an Outdoor Swimming Pool |
|
41 |
The
Laws of Reflection and Refraction (Snell's Law) |
|
41½ |
Atmospheric
Refraction |
|
42 |
Stellar Aberration |
Aberration
of Light |
|
43 |
Stellar Parallax |
Stellar
Parallax |
|
44 |
A
Few of the Nearest Stars |
|
45 |
Proxima
Centauri (mv = 11.05) |
|
46 |
Stellar Motion |
Stellar
Motion Components |
|
47 |
Selected
Stars of Large Proper Motion |
|
48 |
Proper
Motion of the Big Dipper Stars |
|
49 |
Parallactic
+ Proper Motion |
|
50 |
Solar
Motion Corrections to μ
and vr |
|
51 |
Parallax from Motion |
Moving
Cluster Parallax |
|
52 |
Statistical Parallaxes |
Statistical
Parallax Summary |
|
53 |
Apparent and Absolute Magnitudes |
Flux-Apparent
Magnitude Relation |
|
54 |
Apparent
Magnitudes of Selected Objects |
|
55 |
The
26 Brightest Stars |
|
56 |
Absolute
Magnitudes of Selected Objects |
|
57 |
Distance
Modulus |
|
58 |
Effective
Wavelength |
|
59 |
Color Indices |
Color
Indices |
|
60 |
UBV
Normalized Transmission Functions |
|
61 |
Stellar
Magnitudes, Colors, Bolometric Corrections and . . . |
|
62 |
Sagittarius
Star Cloud |
|
63 |
Interstellar Extinction & Reddening |
Interstellar
Reddening and Giant Molecular Cloud Barnard 68 |
|
64 |
Horsehead
Nebula |
|
65 |
Spectral Types |
Stellar
Spectral Types: OBAFGKM |
|
66 |
The
Solar Spectrum (moderate resolution, Fraunhofer features labeled) |
|
67 |
The
Solar Spectrum
(higher resolution - color - echelle spectrogram -
expandable) |
|
68 |
High
Resolution Solar Spectrum (λλ4000-7000Å,
60Å per strip) |
|
69 |
Solar
Spectrum Tracing - λλ4200-4600Å -
high dispersion (expandable) |
|
70 |
Solar
Spectrum Tracing -
λλ4600-5000Å
- high dispersion (expandable) |
|
71 |
Objective
Prism Spectrogram |
|
72 |
Spectral
Classification Descriptions |
|
73 |
Spectral
Feature Type Versus Spectral Class |
|
74 |
Spectral
Classifications: Detailed Criteria |
|
75 |
The
Henry Draper Classification System |
|
76 |
Stellar
Magnitudes, Colors, Temperatures and . . . for Normal Stars |
|
77 |
F5
Luminosity Sequence |
|
78 |
The H-R Diagram |
H-R
Diagram of the Nearest and Brightest Stars |
|
79 |
Simplified
HR-Diagram of 20000 Stars within 1000 pc |
|
80 |
The
H-R or Color-Magnitude Diagram |
|
81 |
Main
Sequence Spectral Types, Temperatures and B-V Color Indices |
|
82 |
Stellar
Sizes and the HR Diagram |
|
83 |
Stellar
Luminosity Classes |
|
84 |
APOD:
2001 February 23 - M55 Color Magnitude Diagram |
|
85 |
Cluster
Color-Magnitude Diagrams |
|
86 |
Regions
of Variability in the HR-Diagram |
|
87 |
Measures
of Stellar Atmospheric Temperature |
|
88 |
The Stellar Luminosity Function,
φ(M) |
Brightest
Star Luminosity Function |
|
89 |
Nearest
Star Luminosity Function |
|
90 |
Stellar
Luminosity Function |
|
91 |
Luminosity Function from the Fundamental Equation of Stellar Statistics |
|
92 |
Stellar
Luminosity Function, Emission Function and Star Density |
|
93 |
Luminosity
Function Versus Stellar Classification |
|
94 |
The
Kapetyn Universe before and after Extinction Corrections |
|
95 |
Some
Interesting Luminosity Function Conclusions |
|
96 |
Telescopes |
General |
The
Functions of a Telescope |
|
97 |
Limiting
Magnitudes of Telescopes |
|
98 |
The
Laws of Reflection and Refraction (Snell's Law) |
|
99 |
Plate
Scale |
|
100 |
Magnification |
|
101 |
Airy
Disk |
|
102 |
Seeing
Excursions of Betelguese (Slowed by Factor of 10) |
|
103 |
Pluto-Charon Images:
Discovery Images,
Ground-based and HST Images |
|
104 |
Solar
Twinkling Pattern on a Swimming Pool Floor |
|
105 |
Refractors |
Galileo's
Telescope |
|
106 |
A Refracting
Telescope |
|
107 |
The Yerkes Telescope:
On Exhibition and
In Place
and
Its Dome |
|
108 |
Chromatic
Aberration & its Correction,
In Photo |
|
109 |
Summary
of Refractor Problems |
|
110 |
Reflectors |
Reflector
Focuses |
|
111 |
Spherical
Aberration |
|
112 |
KPNO:
2.1-m Telescope,
Some Domes,
More Domes |
|
113 |
Hale Obs.:
5-m Telescope and
Its Dome |
|
114 |
CTO:
1.2-m Telescope through Dome Shutter,
Domes,
4-m Dome |
|
115 |
The
8.2-m VLT Array (Cerro Paranal, Chile) |
|
116 |
Keck Telescopes:
Mirror,
Structural Diagram,
Mirror-Support and
Domes |
|
117 |
Keck:
During Daytime,
At Twilight |
|
118 |
World's
Largest Optical Telescopes Mirrors |
|
119 |
HST:
Drawing,
Photograph from Space Shuttle |
|
120 |
Optical Observatory Sites |
Observatory
Site Selection Criteria |
|
121 |
Atmospheric
Opacity |
|
122 |
World
Map - Major Ocean Currents |
|
123 |
Annual
Global Cloud Cover Map,
Monthly Global Cloud Maps |
|
124 |
Current
Worldwide Cloud Distribution (almost real time) |
|
125 |
Destruction
of Mt. Stromlo Observatory by Brush Fire |
|
126 |
Earth
at Night (Light Pollution) |
|
127 |
Schmidt Telescopes |
A
Schmidt Telescope Design |
|
128 |
Schmidt
Telescope Problems |
|
128.5 |
Optical
Vignetting |
|
129 |
Catalina
Sky Survey Schmidt Dome on Mt. Bigelow, near Tucson, AZ |
|
130 |
Schmidt Image
of M101 |
|
131 |
Radio Telescopes |
The
76 Meter Lovell Radio Telescope at Jodrell Bank, England |
|
132 |
Australian
Radio Telescope Array |
|
133 |
300-Foot
Green Bank Radio Telescope:
Nov 15, 1988,
Nov 16, 1988 |
|
134 |
The
100-Meter Green Bank Radio Telescope, the Largest Fully Steerable RT |
|
135 |
Arecibo:
The Largest Telescope of any Sort (Radio) |
|
136 |
The
Very Large Array and
A Closer Look at the VLA |
|
137 |
Spectrographs |
Some Basic Designs |
Main
Components of a Spectrograph |
|
138 |
An
Early (Prism) Spectrograph |
|
139 |
Grating
Spectrograph (Palomar) |
|
140 |
Echelle
Spectrograph |
|
141 |
Performance Characteristics |
Performance
Characteristics of Spectrographs |
|
142 |
Speed |
Spectrograph Speed:
List of Relevant Parameters and Derivation |
|
143 |
Spectrograph
Speed Summary |
|
144 |
Various
Spectrograph Requirements and Options |
|
145 |
Diffraction Gratings |
Diffraction
Gratings all around Us |
|
146 |
Diffraction
Gratings - Theory |
|
147 |
Grating
Spectrograph (Palomar) |
|
148 |
Diffraction
Gratings - the Overlapping of Orders |
|
149 |
Grating
Blaze |
|
150 |
Detectors |
General |
Quantum
Efficiencies of Various Detector Types |
|
151 |
The Eye |
Scotopic
and Photopic Sensitivity |
|
152 |
Relative
Sensitivities of Various Cones and Rods |
|
153 |
Rod
and Cone Distribution on the Retina |
|
154 |
Dark
Adaptation |
|
155 |
The Photographic Emulsion |
The
Advantages and Disadvantages of Photography |
|
156 |
Photographic
Plates: Parameters and Relationships |
|
157 |
A
Typical H & D Curve |
|
158 |
Electronic Array Detectors |
Pulse-Counting
Statistics |
|
159 |
Determination
of the Photon Count Rate |
|
160 |
The
Probability Function Q(N, t,
λ) |
|
161 |
More
on the Function Q(N, t,
λ) |
|
162 |
A
Typical CCD |
|
163 |
The
Fundamental Equations of Astrophysics |
General Equation Types |
Basic
Equation Types |
|
164 |
The Radiation Field |
Various
Expressions for the Planck Function |
|
165 |
The Excitation Distribution |
Boltzmann
Equation Derivation |
|
166 |
Boltzmann
Equation |
|
166.5 |
A
Sample Problem Using the Boltzmann Equation |
|
167 |
The Maxwellian Distributions |
Maxwellian
Energy, Momentum and Speed Distributions |
|
168 |
The
Maxwellian Speed and Velocity Distributions |
|
169 |
The
Maxwellian One-Dimensional Velocity Distributions |
|
170 |
The Ionization Distribution |
Saha
Equation |
|
171 |
Calculation of Electron Pressure, Pe |
Elemental
Abundances |
|
172 |
Pe(Pg,T
) Tables |
