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Randy Light with telescope pointed at galaxy


Astrophotography Lessons


Randall Light, M.D., Brazos Valley Astronomy Club member and advanced astrophotographer, shares his knowledge of astrophotography with others who are interested in capturing images of near and deep sky objects. Dr. Light writes detailed instructions for capturing beautiful images with a DSLR camera or telescope and provides sample images for each lesson.

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DSLR Astrophotography

This comprehensive article describes how to make astrophotography images with a digital single lens reflex (DSLR) camera. Topics include:

  • Types of astrophotography
  • Astrophotography considerations
  • Focusing
  • Shutter speed
  • F-stop
  • ISO
  • White balance
  • File types
  • Photographing the moon
  • Nightscapes
DSLR Astrophotography Article

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dslr-astrophotography Perseids M85 Double Cluster Heart and Soul Nebula


Challenging Conditions

Rainy days, cloudy nights, dew formation, and both high and low temperatures can make astrophotography conditions difficult. Adjustment of attitude, approach, equipment, and procedure can best utilize the prevailing conditions to produce very acceptable images. Topics include:

  • Reviewing the options
  • Calculate the field of view for various focal lengths
  • Imaging with a 300mm Lens
  • Imaging in cold temperatures
Challenging Conditions Article

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North American Nebula


Meteors and Meteor Showers

A DSLR camera can provide dramatic images of meteors and meteor showers. By obtaining immediate feedback from the camera, adjustments can be made to improve the images until the settings are appropriate. Topics include:

  • Location and timing
  • Equipment
  • Meteor shower schedule
Meteors and Meteor Showers Article

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photograph meteor showers


Star Trails

Intentionally creating star trails can produce an attractive, interesting image. Topics include:

  • Equipment
  • Exposure
  • Processing images
  • Software
Star Trails Article

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Photograph star trails


Lunar Eclipse

This is the first article Dr. Light write about photographing a lunar eclipse. On January 31, 2018, Dr. Light photographed a rare Super Blue Blood Moon that turned a beautiful red color. Topics include:

  • Equipment
  • Work flow
  • Eclipse totality
  • Camera settings
Lunar Eclipse Article

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stages of lunar eclipse in 2018


Lunar Eclipse

On January 20, 2019, the night was clear and cold and Dr. Light used 3 cameras to photograph an eclipse of a Super Blood Wolf Moon. Topics include:

  • Camera descriptions
  • Exposure planning
  • Processing images
  • Time-lapse video
Lunar Eclipse Article

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3 different images of the lunar eclipse


Sunspots

Initially, photographing sunspots can be done with a DSLR camera, a telephoto lens or telescope, a tripod or telescope mount, and dedicated solar blocking filters. To routinely see the texture of the solar surface, solar prominences and many other features of the sun requires a solar telescope with appropriate narrow band filters. Topics include:

  • List of equipment
  • Camera settings
  • Safety measures
Sunspots Article

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sun with one sunspot


Mercury Transit

Mercury was visible but, because of clouds, conditions were a challenge. Constantly changing light added to the problem. Topics include:

  • Equipment
  • Camera settings
Mercury Transit Article

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Mercury orbiting in front of sun


Reduce the Noise

There are new software tools to process astrophotography images and reduce noise. Before and after images are included. Topics include:

  • Light and Noise
  • Editing Software
  • The Images
Light-Noise Article

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Horsehead Nebula


Wide Field Astrophotography Using a Star Tracker

Wide field photos of the night sky can be taken with a DSLR, a wide angled lens, and a tripod without and with a tracking mount. Topics include:

  • Equipment
  • Exposure Time
  • Trackers
Wide Field Article

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Milky Way


Photographing a Comet

Photographing a comet is challenging and rewarding. Learn how to make a plan to photograph a comet. This article takes you through the first planning stages to the end product. Beautiful astrophotography examples of Neowise are included. Topics include:

  • Parts of a Comet
  • Making a Plan
  • Comet Movement
  • Single or Combination Image
  • Examples of Single Image
  • Stacking Multiple Images
  • Better Techniques - Better Results
  • The Final Product
  • References and Links
Comet Article

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Comet Neowise


Annular(Ring of Fire) Eclipse

Understand what conditions are needed to produce an annular solar eclipse and read a detailed, step-by-step process to capture the event. Camera settings with many instructional photos are included with each topic. Topics include:

  • Size of Moon and Sun
  • Five Phasess
  • Baily's Beads and the Diamond Ring Effect
  • Site Selection
  • Best Site Selections
  • Possible Cloud Cover
  • Timetable of Annular Solar Eclipse
  • Photography Equipment
  • Camera Choices
  • Lens and Telescope Selection
  • The Nyquist Theorem
  • Camera Menu Options
  • The Histogram
  • Correctly Exposed Image
Annular Eclipse Article

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annular eclipse Ring of Fire and camera settings

Topics Continued

  • Single or Composite Eclipse Images
  • Diamond Ring - Bailey's Beads - Landscape Camera Settings
  • Perspective Controlled Telephoto Image
  • PhotoPills and Solar Eclipse Timer Cellphone Applications
  • References


Visit Dr. Light's website:
Randall Light Astrophotography





Randy Light

Photo: Randy Light, M.D.