Astro Sketching Workshop<br />Green Bank Star Quest 6<br />Presented by<br />Michael Rosolina<br />
To improve your observing skills<br />To create a visual record<br />To exercise your creativity<br />Why Sketch?<br />
Historical Background<br />These are just a few of the many past astronomers who were keen observers<br />and  who sketche...
Galileo<br />Galileo was  one of the first telescopic observers to draw (and publish) what he saw.<br />Source: Galileo Pr...
Galileo<br />Galileo published his <br />observations of  Jupiter  and <br />its moons in SideriusNuncius,  <br />The Star...
Galileo<br />Galileo and his protégé<br />Castelli developed solar <br />projection to accurately<br />observe and record ...
Huygens<br />Another  pioneer in the mid-17th   century<br />was Christiaan Huygens , who made these<br />observations of ...
Maraldi<br />From 1672 to 1719,   Maraldi made<br />many  observations of  Mars and<br />made careful measurements of the<...
Antoniadi<br />By the 19th and early 20th  century, improved telescopes were allowing skilled observers to make even more ...
From Galileo’s early drawings…<br />Courtesy NASA/JPL-Caltech<br />
Through the legendary observers of the past,<br />to present day amateur astronomers…<br />Phases of Venus<br />Courtesy N...
Astro sketching continues to thrive…<br />Courtesy Sol Robbins<br />
Sinus Iridum<br />25July 2007<br />12” SCT @ 271x<br />Courtesy Rich Handy<br />
    The Sun in<br />Hydrogen Alpha <br />Courtesy Erika Rix<br />
Double Stars<br />Courtesy Eric Graff<br />
Star Clusters<br />M44<br />The Beehive<br />102mm Refractor<br />Mag: 12.5x & 30x<br />Courtesy Rony De Laet<br />
Globular Clusters<br />Courtesy Frank McCabe<br />
Galaxies<br />Courtesy Jeff Young<br />
What makes a good astro sketch?<br /><ul><li>Record what you see—not what you would like to see
Include  information  such as instrument used,    magnification,  and field of view (FOV)
 Include time and date (UT), cardinal directions, seeing,  transparency, altitude of object, and any other relevant inform...
Add any other notes you feel are pertinent to your observation</li></li></ul><li>Where do I begin?  What should I draw?<br...
Planets<br />
Mars<br />Courtesy Sol Robbins<br />
      Mars<br />19 Dec. 2007<br />0430-0500 UT<br />10” Reflector <br />Mag: 360x<br />S: Antoniadi II<br />Courtesy Frank...
Jupiter<br />Courtesy Sol Robbins<br />
Courtesy Jeff Young<br />
Venus<br />Courtesy Sol Robbins<br />
The Sun<br />
Courtesy Erika Rix<br />
Courtesy Jeff Young<br />
Courtesy Ralph Marantino<br />
The Moon<br />
Gassendi<br />3 Sept. 2006<br />12” SCT @ 244x<br />Courtesy Rich Handy<br />
Waning Gibbous Moon  28 DEC. 2008<br />           200mm Reflector @ 48x<br />Courtesy Deirdre Kelleghan<br />
Petavius  29 May 2009<br />10” Reflector @ 241x & 362x<br />Courtesy Frank McCabe<br />
Lunar Eclipse<br /> 21 Feb.2008<br />108mm Reflector<br />Mag:  21x<br />Courtesy Frank McCabe<br />
Deep Sky Objects<br />
Courtesy Eric Graff<br />
Courtesy Jeff Young<br />
          M31<br />28 Sept. 2008<br />15x70 Binoculars<br />FOV: 4.4 deg.<br />Courtesy Rony  De Laet<br />
Courtesy Eric Graff<br />
         IC4665<br />Summer Beehive<br />15 Sept. 2007<br />102mm Refractor<br />Mag: 16x  FOV: 150’<br />Courtesy Rony De...
Asteroids <br />and <br />Comets<br />
C/17P Holmes<br />03 Nov. 2007<br />102mm Refractor<br />Mag: 16x & 20x<br />FOV:  150’<br />Courtesy Rony De Laet<br />
Courtesy Jeff Young<br />
Occultations<br />And<br />Transits<br />
Occultation of Venus<br />01 Dec. 2008  LX 90 @ 57x<br />Courtesy Deirdre Kelleghan<br />
Sketch by M Rosolina<br />
What do I use to make my sketch?<br />
Basic Tools for Sketching<br /><ul><li>drawing pencils,  pens,  color pencils,  Conte’ crayon,  charcoal,  pastels,  chalk
sketching paper,  copy paper,  black paper,  color paper,  textured paper,  waterproof paper
templates,  blending stumps,  erasers,  eraser shield,  sharpener
clipboard,  red light,  white light,  table,  chair</li></li></ul><li>What effects can be achieved <br />by the use of dif...
Graphite pencil<br />on smooth white copy paper<br />Courtesy Sol Robbins<br />
Graphite pencil on white sketch<br />paper<br />Last Quarter Moon<br />18 March 2009<br />15x70 Binoculars<br />Courtesy D...
Graphite pencil<br />on white paper<br />inverted digitally<br />Courtesy Jeff Young<br />
Graphite pencil and<br />color pencil on white<br />sketch paper<br />
Color Chalk on<br />textured white paper<br />   The Sun in Ha<br />    10 DEC. 2005<br />40mm PST @ 33x<br />Courtesy Eri...
Color pen on<br />white paper<br />Courtesy Ralph Marantino<br />
Remember…<br />record what<br />you see!<br />Courtesy Ralph Marantino<br />
White Conte’ crayon,<br />Conte’ pencil, and<br />watercolor pencil on<br />black paper<br />Courtesy Erika Rix<br />
White Conte’ crayon<br />on textured color paper<br />
Computer processing is a relatively new tool that can be used very effectively to enhance and even create astro sketches.<...
You can <br />add text…<br />Courtesy Eric Graff<br />
You can <br />add color…<br />
You can invert…<br />Comet C/17P Holmes<br />04 Nov. 2007<br />Courtesy Sol Robbins<br />
You can add text to field sketches and make a collage of sequences…<br />Courtesy Erika Rix<br />
You can even make an animation…<br />Solar Prominence<br />Courtesy Erika Rix<br />
Courtesy Erika Rix<br />
… or draw the <br />sketch with<br /> the computer…<br />Alpha Persei Assoc. <br />(Mel 20)<br />ETX 70 @ 9x <br /> FOV: 4...
What does making a sketch look like?<br />Here are two step-by-step tutorials.<br />Let’s start with a lunar target.<br />
First, anchor the sketch by outlining<br />distinguishing features…<br />Courtesy Erika Rix<br />
Then add shadows…<br />Courtesy Erika Rix<br />
Blend to smooth…<br />Courtesy Erika Rix<br />
Add more shadows.<br />Try to make light<br />and dark areas<br />instead of drawing<br />objects…<br />Courtesy Erika Rix...
Add and blend <br />more shadows.<br />Use your finger <br />and a stump to<br />blend…<br />Courtesy Erika Rix<br />
Apply background<br />in layers—use  a loaded finger or a loaded stump…<br />Courtesy Erika Rix<br />
Add material in layers… <br />Courtesy Erika Rix<br />
Keep adding those layers… <br />Courtesy Erika Rix<br />
Soften by blending…<br />Courtesy Erika Rix<br />
Add finishing touches and you’re done…<br />Copernicus<br />Courtesy Erika Rix<br />
Now let’s take a look at<br /> sketching the Sun in white light.<br />REMEMBER:<br />Never look directly at the Sun <br />...
Here’s what you need to start…<br />
The scope I use for projection is a 4.25” (108mm)<br />Reflector with a 15mm RKE eyepiece yielding 30x.<br />
Before you can project the Sun, you must find it.  I use the shortest shadow method.  Projection was developed by Galileo’...
Move the clipboard until the solar image fills the template.  Hold the template square to the eyepiece or you’ll get an ov...
After finding the right distance and angle, fine tune the focus to make the limb sharp.  You’ll need to support the clipbo...
Now you are ready to trace the location and shape of any sunspot groups.  Watch how the Sun drifts through the field to de...
Here is what the template looks like after I trace the sunspots. <br />
To get better detail, I combine projection with eyepiece observation at higher magnification using a homemade BaaderAstro ...
With the filter in place, you are ready to add detail.  I use <br />different pencils for different tones, as well as the ...
Add the limb darkening usually evident in white light.  Use a loaded stump to apply graphite and blend with your finger.<b...
To finish up, I add the time/date in UT, cardinal directions, details on scope and conditions, and any relevant notes.<br ...
We’ve looked at some of the long, rich history of astro sketching.<br />We’ve seen some prime examples of sketching at its...
Remember, everyone starts somewhere…<br />Observing log<br />  M Rosolina<br />
Keep Looking Up!<br />Orion<br />Sketch Courtesy Frank McCabe<br />
Choose one of the following objects to practice your sketching technique…<br />
M6<br />Courtesy Rony De Laet<br />
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Introduction to Astro Sketching Workshop

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An introduction to astrosketching including historic background, examples of contemporary work, materials list, tutorials, and practice objects.

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Transcript of "Introduction to Astro Sketching Workshop"

  1. 1. Astro Sketching Workshop<br />Green Bank Star Quest 6<br />Presented by<br />Michael Rosolina<br />
  2. 2. To improve your observing skills<br />To create a visual record<br />To exercise your creativity<br />Why Sketch?<br />
  3. 3. Historical Background<br />These are just a few of the many past astronomers who were keen observers<br />and who sketched their observations:<br />Galileo<br />Huygens<br />Maraldi<br />W.C. Bond & G.P. Bond<br />Antoniadi<br />Dawes<br />Barnard<br />
  4. 4. Galileo<br />Galileo was one of the first telescopic observers to draw (and publish) what he saw.<br />Source: Galileo Project/Al Van Helden<br />
  5. 5. Galileo<br />Galileo published his <br />observations of Jupiter and <br />its moons in SideriusNuncius, <br />The Starry Messenger (1610). <br />This is an excerpt from his journal.<br />Source: Galileo Project/Al Van Helden<br />
  6. 6. Galileo<br />Galileo and his protégé<br />Castelli developed solar <br />projection to accurately<br />observe and record <br />sunspots . Through a<br />sequence of solar<br />observations, Galileo<br />demonstrated the<br />rotation of the Sun.<br />Source: Galileo Project/Al Van Helden<br />
  7. 7. Huygens<br />Another pioneer in the mid-17th century<br />was Christiaan Huygens , who made these<br />observations of Mars<br />Source: The Exploration of Mars<br />By Werner von Braun & ChesleyBonestell<br />
  8. 8. Maraldi<br />From 1672 to 1719, Maraldi made<br />many observations of Mars and<br />made careful measurements of the<br />polar ice cap.<br />Source: The Exploration of Mars<br />By Werner von Braun & ChesleyBonestell<br />
  9. 9. Antoniadi<br />By the 19th and early 20th century, improved telescopes were allowing skilled observers to make even more detailed sketches of celestial objects. <br />Source: The Planet Mars by William Sheehan<br />
  10. 10. From Galileo’s early drawings…<br />Courtesy NASA/JPL-Caltech<br />
  11. 11. Through the legendary observers of the past,<br />to present day amateur astronomers…<br />Phases of Venus<br />Courtesy NASA/JPL-Caltech<br />
  12. 12. Astro sketching continues to thrive…<br />Courtesy Sol Robbins<br />
  13. 13. Sinus Iridum<br />25July 2007<br />12” SCT @ 271x<br />Courtesy Rich Handy<br />
  14. 14. The Sun in<br />Hydrogen Alpha <br />Courtesy Erika Rix<br />
  15. 15. Double Stars<br />Courtesy Eric Graff<br />
  16. 16. Star Clusters<br />M44<br />The Beehive<br />102mm Refractor<br />Mag: 12.5x & 30x<br />Courtesy Rony De Laet<br />
  17. 17. Globular Clusters<br />Courtesy Frank McCabe<br />
  18. 18. Galaxies<br />Courtesy Jeff Young<br />
  19. 19. What makes a good astro sketch?<br /><ul><li>Record what you see—not what you would like to see
  20. 20. Include information such as instrument used, magnification, and field of view (FOV)
  21. 21. Include time and date (UT), cardinal directions, seeing, transparency, altitude of object, and any other relevant information
  22. 22. Add any other notes you feel are pertinent to your observation</li></li></ul><li>Where do I begin? What should I draw?<br />Draw what you like to observe—what interests you.<br />There are as many different astro sketches as there are visible objects in the sky.<br />
  23. 23. Planets<br />
  24. 24. Mars<br />Courtesy Sol Robbins<br />
  25. 25. Mars<br />19 Dec. 2007<br />0430-0500 UT<br />10” Reflector <br />Mag: 360x<br />S: Antoniadi II<br />Courtesy Frank McCabe<br />
  26. 26.
  27. 27. Jupiter<br />Courtesy Sol Robbins<br />
  28. 28. Courtesy Jeff Young<br />
  29. 29. Venus<br />Courtesy Sol Robbins<br />
  30. 30. The Sun<br />
  31. 31.
  32. 32. Courtesy Erika Rix<br />
  33. 33. Courtesy Jeff Young<br />
  34. 34. Courtesy Ralph Marantino<br />
  35. 35.
  36. 36. The Moon<br />
  37. 37. Gassendi<br />3 Sept. 2006<br />12” SCT @ 244x<br />Courtesy Rich Handy<br />
  38. 38. Waning Gibbous Moon 28 DEC. 2008<br /> 200mm Reflector @ 48x<br />Courtesy Deirdre Kelleghan<br />
  39. 39. Petavius 29 May 2009<br />10” Reflector @ 241x & 362x<br />Courtesy Frank McCabe<br />
  40. 40. Lunar Eclipse<br /> 21 Feb.2008<br />108mm Reflector<br />Mag: 21x<br />Courtesy Frank McCabe<br />
  41. 41. Deep Sky Objects<br />
  42. 42. Courtesy Eric Graff<br />
  43. 43. Courtesy Jeff Young<br />
  44. 44. M31<br />28 Sept. 2008<br />15x70 Binoculars<br />FOV: 4.4 deg.<br />Courtesy Rony De Laet<br />
  45. 45. Courtesy Eric Graff<br />
  46. 46. IC4665<br />Summer Beehive<br />15 Sept. 2007<br />102mm Refractor<br />Mag: 16x FOV: 150’<br />Courtesy Rony De Laet<br />
  47. 47. Asteroids <br />and <br />Comets<br />
  48. 48.
  49. 49. C/17P Holmes<br />03 Nov. 2007<br />102mm Refractor<br />Mag: 16x & 20x<br />FOV: 150’<br />Courtesy Rony De Laet<br />
  50. 50. Courtesy Jeff Young<br />
  51. 51.
  52. 52. Occultations<br />And<br />Transits<br />
  53. 53. Occultation of Venus<br />01 Dec. 2008 LX 90 @ 57x<br />Courtesy Deirdre Kelleghan<br />
  54. 54. Sketch by M Rosolina<br />
  55. 55. What do I use to make my sketch?<br />
  56. 56. Basic Tools for Sketching<br /><ul><li>drawing pencils, pens, color pencils, Conte’ crayon, charcoal, pastels, chalk
  57. 57. sketching paper, copy paper, black paper, color paper, textured paper, waterproof paper
  58. 58. templates, blending stumps, erasers, eraser shield, sharpener
  59. 59. clipboard, red light, white light, table, chair</li></li></ul><li>What effects can be achieved <br />by the use of different media?<br />
  60. 60. Graphite pencil<br />on smooth white copy paper<br />Courtesy Sol Robbins<br />
  61. 61. Graphite pencil on white sketch<br />paper<br />Last Quarter Moon<br />18 March 2009<br />15x70 Binoculars<br />Courtesy Deirdre Kelleghan<br />
  62. 62. Graphite pencil<br />on white paper<br />inverted digitally<br />Courtesy Jeff Young<br />
  63. 63. Graphite pencil and<br />color pencil on white<br />sketch paper<br />
  64. 64. Color Chalk on<br />textured white paper<br /> The Sun in Ha<br /> 10 DEC. 2005<br />40mm PST @ 33x<br />Courtesy Erika Rix<br />
  65. 65. Color pen on<br />white paper<br />Courtesy Ralph Marantino<br />
  66. 66. Remember…<br />record what<br />you see!<br />Courtesy Ralph Marantino<br />
  67. 67. White Conte’ crayon,<br />Conte’ pencil, and<br />watercolor pencil on<br />black paper<br />Courtesy Erika Rix<br />
  68. 68. White Conte’ crayon<br />on textured color paper<br />
  69. 69. Computer processing is a relatively new tool that can be used very effectively to enhance and even create astro sketches.<br />Digitizing your work allows you to present and share it with the global community of amateur astronomers.<br />
  70. 70. You can <br />add text…<br />Courtesy Eric Graff<br />
  71. 71. You can <br />add color…<br />
  72. 72. You can invert…<br />Comet C/17P Holmes<br />04 Nov. 2007<br />Courtesy Sol Robbins<br />
  73. 73. You can add text to field sketches and make a collage of sequences…<br />Courtesy Erika Rix<br />
  74. 74. You can even make an animation…<br />Solar Prominence<br />Courtesy Erika Rix<br />
  75. 75. Courtesy Erika Rix<br />
  76. 76. … or draw the <br />sketch with<br /> the computer…<br />Alpha Persei Assoc. <br />(Mel 20)<br />ETX 70 @ 9x <br /> FOV: 4.8 deg.<br />Digital drawing based on a raw pencil field sketch<br />Courtesy Rony De Laet<br />
  77. 77. What does making a sketch look like?<br />Here are two step-by-step tutorials.<br />Let’s start with a lunar target.<br />
  78. 78. First, anchor the sketch by outlining<br />distinguishing features…<br />Courtesy Erika Rix<br />
  79. 79. Then add shadows…<br />Courtesy Erika Rix<br />
  80. 80. Blend to smooth…<br />Courtesy Erika Rix<br />
  81. 81. Add more shadows.<br />Try to make light<br />and dark areas<br />instead of drawing<br />objects…<br />Courtesy Erika Rix<br />
  82. 82. Add and blend <br />more shadows.<br />Use your finger <br />and a stump to<br />blend…<br />Courtesy Erika Rix<br />
  83. 83. Apply background<br />in layers—use a loaded finger or a loaded stump…<br />Courtesy Erika Rix<br />
  84. 84. Add material in layers… <br />Courtesy Erika Rix<br />
  85. 85. Keep adding those layers… <br />Courtesy Erika Rix<br />
  86. 86. Soften by blending…<br />Courtesy Erika Rix<br />
  87. 87. Add finishing touches and you’re done…<br />Copernicus<br />Courtesy Erika Rix<br />
  88. 88. Now let’s take a look at<br /> sketching the Sun in white light.<br />REMEMBER:<br />Never look directly at the Sun <br />unless you have an approved solar filter <br />covering the objective or a dedicated solar telescope.<br />Keep the cap on your finderscope.<br />Never leave an instrument pointed at the Sun unattended.<br />
  89. 89. Here’s what you need to start…<br />
  90. 90. The scope I use for projection is a 4.25” (108mm)<br />Reflector with a 15mm RKE eyepiece yielding 30x.<br />
  91. 91. Before you can project the Sun, you must find it. I use the shortest shadow method. Projection was developed by Galileo’s protégé, BenedettoCastelli.<br />
  92. 92. Move the clipboard until the solar image fills the template. Hold the template square to the eyepiece or you’ll get an oval.<br />
  93. 93. After finding the right distance and angle, fine tune the focus to make the limb sharp. You’ll need to support the clipboard, too.<br />
  94. 94. Now you are ready to trace the location and shape of any sunspot groups. Watch how the Sun drifts through the field to determine west.<br />
  95. 95. Here is what the template looks like after I trace the sunspots. <br />
  96. 96. To get better detail, I combine projection with eyepiece observation at higher magnification using a homemade BaaderAstro Solar Filter. <br />
  97. 97. With the filter in place, you are ready to add detail. I use <br />different pencils for different tones, as well as the stump.<br />
  98. 98. Add the limb darkening usually evident in white light. Use a loaded stump to apply graphite and blend with your finger.<br />
  99. 99. To finish up, I add the time/date in UT, cardinal directions, details on scope and conditions, and any relevant notes.<br />Sketch by M Rosolina<br />
  100. 100. We’ve looked at some of the long, rich history of astro sketching.<br />We’ve seen some prime examples of sketching at its best.<br />We’ve discussed sketching tools and techniques.<br />And we’ve learned that sketching not only leaves you with a visual record of your observation…<br />But most importantly, it trains your eye and improves your observing skills.<br />Now it’s time for a little hands-on practice.<br />
  101. 101. Remember, everyone starts somewhere…<br />Observing log<br /> M Rosolina<br />
  102. 102. Keep Looking Up!<br />Orion<br />Sketch Courtesy Frank McCabe<br />
  103. 103. Choose one of the following objects to practice your sketching technique…<br />
  104. 104. M6<br />Courtesy Rony De Laet<br />
  105. 105. Courtesy Jeff Young<br />
  106. 106. M17<br />Courtesy Rony De Laet<br />
  107. 107. Courtesy Sol Robbins<br />
  108. 108. Courtesy Eric Graff<br />

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