A Practical Guide to Lightcurve Photometry and Analysis

Front Cover
Springer Science & Business Media, Feb 22, 2006 - Science - 298 pages
0 Reviews
It is a pleasure and an honor to offer a few words of forward to Brian Warner's guide to photometry. In his preface, he makes a considerable point about amateurs and professionals, and those who dare or deign to step across the line supposedly dividing the two. Here I would like to make a few observations about the two monikers, and suggest that there is not, or at least should not be, a distinction - tween "amateur" and "professional. " In preparing these remarks I referred to W- ster’s New Collegiate Dictionary (1960 edition; not so new anymore, but that was when my collegiate experience began): am ́a·teur, n. [F. , fr. L. amator lover, fr. amare to love. ] 1. One who cultivates a particular pursuit, study, or science, from taste, without pursuing it professionally; also, a dabbler. 2. In sports and esp. athletics, one who is not rated as a professional. Well. . . a "dabbler" eh? "not rated as a professional"? No wonder we have an identity problem here. Somehow in my youth as an amateur astronomer I missed this connotation of the term. To me, the meaning of the term amateur was do- nated by its root, "to love," that is, one who does what he does out of love of the subject, not for remuneration (to the extent one can get away with that).
 

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

12 What Lies Ahead
4
Targets of Opportunity
7
22 Variable Stars
12
23 Eclipsing Binary Lightcurve Characteristics
15
24 Cataclysmic Variables
17
25 Cepheids
18
28 Other Targets
19
29 Summary
20
92 Planning the Observing Program
112
93 Selecting Targets
113
94 General Considerations
114
95 Asteroids
115
96 Variable Stars
117
97 The Observing Run
118
98 Measuring Images
120
99 From Image to Data
123

Photometry Fundamentals
21
32 The First ColorBased Systems
22
33 The JohnsonCousins Standard
23
34 Setting the Standard
24
37 Landolt Standards
25
38 Henden Sequences
26
The Photometry Primer
27
42 Air Mass
28
43 Extinction
29
44 Transforms and Nightly ZeroPoints
31
45 Differential Versus AllSky Photometry
32
46 Seeing and Scintillation
35
47 Matching Pixel Size to Seeing
36
49 Dark Frames
37
411 Photometry Apertures and Annuluses
41
412 Reporting Errors
46
Photometric Reductions
47
51 The Different Path
48
52 The Differential Formula
49
53 Clear to Visual Conversions
50
55 The Same Color Index
52
56 Transforms First
53
58 The Hidden Transforms
56
59 FirstOrder Extinction
57
510 Finding FirstOrder Extinction Modified Hardie
59
511 A Variation on the Modified Hardie method
61
512 Finding FirstOrder Extinction Comp Star
62
513 Comparison and Target Standard Color Index Values
63
514 Find the Color Indices of the Comparisons and Target
64
515 The Comparison Star Standard Magnitudes
66
516 Finding the Comparison Star Standard Magnitudes
67
517 Target Standard Magnitudes
68
519 The Different Paths End
71
521 Using the Minimalist Approach for Standard Magnitudes
72
Second Order Extinction
77
62 The Slope of Slopes Method
78
63 When Is the SecondOrder Term Applied?
80
64 Summary
81
Telescopes and Cameras
83
72 The CCD Camera
87
73 Digital and Web Cameras
95
74 Filter Wheels
96
75 Guiding Considerations
97
Imaging and Photometry Software
99
82 Specific Features
100
83 Photometry Software
102
84 Conforming to Accepted Standards
106
85 Manual Versus Automated Measuring
109
Collecting Photons
111
910 The HandsOn Approach for Measuring Images
125
911 Checking the Comparison Stars
129
912 The Automated Approach to Measuring Images
130
Analyzing the Data
133
Period Analysis
137
112 A Simple Start
139
113 To What Precision
142
114 Refining the Search Process
143
115 The Amplitude of the Lightcurve
144
116 Aliases in Depth
145
117 Plotting the HalfPeriod
149
118 A Specific Alias Example
150
119 The Case of 3155 Lee
151
1110 Period Analysis on a Spreadsheet
152
1111 From Lightcurve to Shape
157
Building Star Systems
161
122 Binary Maker
164
123 The Many Possibilities
166
125 The Effects of Temperature Changes in the Primary
168
126 The Effects of Temperature Changes in the Secondary
169
127 The Effects of Changing the Mass Ratio
171
128 The Effects of GravityLimb Darkening and Reflection
172
Publishing Your Data and Results
173
132 Asteroids
175
133 Variable Stars
176
134 Learn by Association
177
Bibliography
181
Glossary
187
I
189
Constellation Names
203
Transforms Example
205
The Spreadsheet
206
The Hidden Transforms
208
FirstOrder Hardie Example
211
The Spreadsheet
213
FirstOrder Comp Example
217
Standard Color Indices
219
II
221
Comparison Standard Magnitudes
223
The Spreadsheet
224
Target Standard Magnitudes
227
The Spreadsheet
228
LandoltGraham Standard Fields
231
Henden Charts
253
Hipparcos BlueRed Pairs
285
Hipparcos BlueRed Pairs
287
SDSS BlueRed Pairs
291
Index
295
Copyright

Other editions - View all

Common terms and phrases

Popular passages

Page v - One who is attached to or cultivates a particular pursuit, study or science from taste, without pursuing it professionally.

About the author (2006)

Brian Warner has been an astronomer for 40 years. He ran the Minor Planet Observer for ten years, and has contributed more than 60 papers to the Minor Planet Bulletin, along with regular articles. He lives in Colorado, USA.

Bibliographic information