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AUTOSTAR CCD PHOTOMETRY 99
APPENDIX I
Suggested Projects
Introduction
There are many types of astronomical photoelectric photometry
projects. Some of the projects an amateur might consider are Lunar
photometry, solar photometry, planetary photometry, planetary
satellite occultation photometry, asteroid photometry, comet
photometry, deep sky photometry (including Novae, Supernovae,
and galactic photometry), and several varieties of stellar
photometry.
Lunar Photometry
Lunar photometry is an area in which few astronomers are
performing photometric observations. Lunar photometry of
transient events such as the brightening or fading of certain areas
and discolorations of the crater floors can be done.
Perhaps one of the most interesting types of Lunar photometry is
the measurement of lunar occultations of stars. The darkened
limb of the moon provides a “knife edge”, rapidly cutting off the
star light. Much can be learned from the data obtained. High–speed
photometry is used and data points may be logged into a computer
at 1-millisecond intervals. The resulting light curve and diffraction
pattern of the light from the star as it is sliced by the darkened edge
of the moon can reveal unseen multiple stars (such as previously
undetected spectroscopic binaries) and information about their
configurations. This is a very exciting project because you only get
one chance and everything must be just right. These measurements
can be made with either a waxing or waning moon. Measurements
can be made from stars disappearing or re–appearing on the
darkened Lunar limb. Unless you have an exceptionally fine
telescope setup and very accurate clock drive, projects involving
the disappearance of a star are the best ones to tackle.
- AutoStar 1
- CCD Photometry 1
- TABLE OF CONTENTS 5
- LIST OF FIGURES 8
- LIST OF FIGURES (Contd.) 9
- LIST OF TABLES 10
- 1. Introduction 11
- 2. Data Acquisition 13
- 2.3 Setting Directories 15
- 2.4 Taking Dark Frames 16
- 2.5 Taking Star Images 18
- 2.5.1 Imaging Procedure 18
- Figure 2-13 22
- DSI1 Folder Tab 22
- Figure 2-14 22
- Tracking Star Selection Box 22
- 2.5.2 Flat Frames 25
- 3. Raw Data Reduction 27
- 3.2 Calibrating the Images 28
- 3.3 Differential Magnitudes 31
- Centering Box Size Settings 34
- 3.4 ImageInfo File 36
- 4. Additional Data Reduction 37
- 4.2 DATA LIST 38
- 5. Advanced Data Reduction 39
- APPENDIXES 41
- APPENDIX A 43
- Modifying the DSI Pro Camera 43
- Filter Wheel 46
- CCD Photometric Filters 47
- Cooling the DSI Pro 49
- TEC Cooler Mods 50
- Parts List 51
- Wiring and Schematics 53
- Conclusion 54
- Optional Accessories 54
- APPENDIX B 55
- Calculating the Air Mass 55
- Getting Started 56
- Star's Declination (δ) 57
- LST Example 62
- Determining the Air Mass 63
- Appendix C 65
- APPENDIX D 69
- Terms and Definitions 70
- Equations 70
- – V). In 71
- APPENDIX E 77
- Observational Data 78
- Coefficient Calculation 80
- Standard Star Magnitudes 82
- Coefficient Determination 85
- Determining β and ζ 87
- Determining γ and ζ 89
- Determining ε and ζ 90
- Determining μ and ζ 92
- APPENDIX F 95
- Least Squares Method 95
- APPENDIX G 99
- FITS Header 99
- Header Details 100
- APPENDIX H 101
- Light Box Construction Notes 102
- Plans and Further Details 105
- HPO Light Box 105
- Suggested Projects 109
- APPENDIX I 109
- Solar Photometry 110
- Planetary Photometry 110
- Comet Photometry 111
- Stellar Photometry 111
- Nova and Supernova Photometry 112
- Asteroid Photometry 112
- APPENDIX J 113
- References 113
- Web Resources 114
- INDEX (Contd.) 118
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