Green Bank Star Quest   Intro to Astrosketching (revised)
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Green Bank Star Quest Intro to Astrosketching (revised)

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Intoduction to astrosketching including history, examples of current work, examples of techniques and media, and resources lists. Ends with images to use in a hands on workshop.

Intoduction to astrosketching including history, examples of current work, examples of techniques and media, and resources lists. Ends with images to use in a hands on workshop.

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    Green Bank Star Quest   Intro to Astrosketching (revised) Green Bank Star Quest Intro to Astrosketching (revised) Presentation Transcript

    • Astro Sketching Workshop
      Green Bank Star Quest 8
      Presented by
      Michael Rosolina
    • To improve your observing skills
      To create a visual record
      To exercise your creativity
      Why Sketch?
    • Historical Background
      These are just a few of the many past astronomers who were keen observers
      and who sketched their observations:
      Galileo
      Huygens
      Maraldi
      W.C. Bond & G.P. Bond
      Antoniadi
      Dawes
      Barnard
    • Galileo
      Galileo was one of the first telescopic observers to draw (and publish) what he saw.
      Source: Galileo Project/Al Van Helden
    • Galileo
      Galileo published his
      observations of Jupiter and
      its moons in SideriusNuncius,
      The Starry Messenger (1610).
      This is an excerpt from his journal.
      Source: Galileo Project/Al Van Helden
    • Galileo
      Galileo and his protégé
      Castelli developed solar
      projection to accurately
      observe and record
      sunspots . Through a
      sequence of solar
      observations, Galileo
      demonstrated the
      rotation of the Sun.
      Source: Galileo Project/Al Van Helden
    • Huygens
      Another pioneer in the mid-17th century
      was Christiaan Huygens , who made these
      observations of Mars
      Source: The Exploration of Mars
      By Werner von Braun & ChesleyBonestell
    • Maraldi
      From 1672 to 1719, Maraldi made
      many observations of Mars and
      made careful measurements of the
      polar ice cap.
      Source: The Exploration of Mars
      By Werner von Braun & ChesleyBonestell
    • Antoniadi
      By the 19th and early 20th century, improved telescopes were allowing skilled observers to make even more detailed sketches of celestial objects.
      Source: The Planet Mars by William Sheehan
    • From Galileo’s early drawings…
      Courtesy NASA/JPL-Caltech
    • Through the legendary observers of the past,
      to present day amateur astronomers…
      Phases of Venus
      Courtesy NASA/JPL-Caltech
    • Astro sketching continues to thrive…
      Courtesy Sol Robbins
    • Sinus Iridum
      25July 2007
      12” SCT @ 271x
      Courtesy Rich Handy
    • The Sun in
      Hydrogen Alpha
      Courtesy Erika Rix
    • Double Stars
      Courtesy Eric Graff
    • Star Clusters
      M44
      The Beehive
      102mm Refractor
      Mag: 12.5x & 30x
      Courtesy Rony De Laet
    • Globular Clusters
      Courtesy Frank McCabe
    • Galaxies
      Courtesy Jeff Young
    • Meteor
      Showers
      Courtesy of RoelWeijenberg
    • What makes a good astro sketch?
      • 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 information
      • Add any other notes you feel are pertinent to your observation
    • Where do I begin? What should I draw?
      Draw what you like to observe—what interests you.
      There are as many different astro sketches as there are visible objects in the sky.
    • Planets
    • Mars
      Courtesy Sol Robbins
    • Mars
      19 Dec. 2007
      0430-0500 UT
      10” Reflector
      Mag: 360x
      S: Antoniadi II
      Courtesy Frank McCabe
    • Jupiter
      Courtesy Sol Robbins
    • Jupiter with
      Phenomenon
    • Courtesy Jeff Young
    • Venus
      Courtesy Sol Robbins
    • 2010 Apparition
      of Jupiter
      Courtesy of
      Jef De Wit
    • The Sun
    • Courtesy Erika Rix
    • Courtesy Jeff Young
    • Courtesy of RoelWeijenberg
    • Courtesy Ralph Marantino
    • The Sun in
      Ha and WL
      June 17, 2011
      8cm refractor @60x
      4cm PST @ 40x
      Courtesy of UwePilz
    • The Moon
    • Gassendi
      3 Sept. 2006
      12” SCT @ 244x
      Courtesy Rich Handy
    • Waning Gibbous Moon 28 DEC. 2008
      200mm Reflector @ 48x
      Courtesy Deirdre Kelleghan
    • Petavius 29 May 2009
      10” Reflector @ 241x & 362x
      Courtesy Frank McCabe
    • Lunar Eclipse
      21 Feb.2008
      108mm Reflector
      Mag: 21x
      Courtesy Frank McCabe
    • Deep Sky Objects
    • Courtesy Eric Graff
    • Courtesy Jeff Young
    • M31
      28 Sept. 2008
      15x70 Binoculars
      FOV: 4.4 deg.
      Courtesy Rony De Laet
    • Courtesy Eric Graff
    • IC4665
      Summer Beehive
      15 Sept. 2007
      102mm Refractor
      Mag: 16x FOV: 150’
      Courtesy Rony De Laet
    • Asteroids
      and
      Comets
    • C/17P Holmes
      03 Nov. 2007
      102mm Refractor
      Mag: 16x & 20x
      FOV: 150’
      Courtesy Rony De Laet
    • Courtesy Jeff Young
    • Occultations
      Conjunctions
      And
      Transits
    • Occultation of Venus
      01 Dec. 2008 LX 90 @ 57x
      Courtesy Deirdre Kelleghan
    • Saturn and Porrima
      May 28, 2011
      8cm refractor @ 120x
      Courtesy of UwePilz
    • Sketch by M Rosolina
    • What do I use to make my sketch?
    • Basic Tools for Sketching
      • 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
    • What effects can be achieved
      by the use of different media?
    • Graphite pencil
      on smooth white copy paper
      Courtesy Sol Robbins
    • Graphite pencil on white sketch
      paper
      Last Quarter Moon
      18 March 2009
      15x70 Binoculars
      Courtesy Deirdre Kelleghan
    • Graphite pencil
      on white paper
      inverted digitally
      Courtesy Jeff Young
    • Graphite pencil and
      color pencil on white
      sketch paper
    • Color Chalk on
      textured white paper
      The Sun in Ha
      10 DEC. 2005
      40mm PST @ 33x
      Courtesy Erika Rix
    • Color pen on
      white paper
      Courtesy Ralph Marantino
    • Remember…
      record what
      you see!
      Courtesy Ralph Marantino
    • White Conte’ crayon,
      Conte’ pencil, and
      watercolor pencil on
      black paper
      Courtesy Erika Rix
    • White Conte’ crayon
      on textured color paper
    • Pastels on
      Black paper
      Total Lunar Eclipse
      The Netherlands
      June 15, 2011
      Courtesy RoelWeijenberg
    • Computer processing is a relatively new tool that can be used very effectively to enhance and even create astro sketches.
      Digitizing your work allows you to present and share it with the global community of amateur astronomers.
    • You can
      add text…
      Courtesy Eric Graff
    • You can
      add color…
    • You can invert…
      Comet C/17P Holmes
      04 Nov. 2007
      Courtesy Sol Robbins
    • You can add text to field sketches and make a collage of sequences…
      Courtesy Erika Rix
    • You can even make an animation…
      Solar Prominence
      Courtesy Erika Rix
    • … or draw the
      sketch with
      the computer…
      Alpha Persei Assoc.
      (Mel 20)
      ETX 70 @ 9x
      FOV: 4.8 deg.
      Digital drawing based on a raw pencil field sketch
      Courtesy Rony De Laet
    • M51 & SN2011dh
      16” reflector @
      75x-225x
      Digital drawing
      Courtesy of IVM
    • What does making a sketch look like?
      Here is a step-by-step tutorial.
      Let’s start with a lunar target.
    • First, anchor the sketch by outlining
      distinguishing features…
      Courtesy Erika Rix
    • Then add shadows…
      Courtesy Erika Rix
    • Blend to smooth…
      Courtesy Erika Rix
    • Add more shadows.
      Try to make light
      and dark areas
      instead of drawing
      objects…
      Courtesy Erika Rix
    • Add and blend
      more shadows.
      Use your finger
      and a stump to
      blend…
      Courtesy Erika Rix
    • Apply background
      in layers—use a loaded finger or a loaded stump…
      Courtesy Erika Rix
    • Add material in layers…
      Courtesy Erika Rix
    • Keep adding those layers…
      Courtesy Erika Rix
    • Soften by blending…
      Courtesy Erika Rix
    • Add finishing touches and you’re done…
      Copernicus
      Courtesy Erika Rix
    • We’ve looked at some of the long, rich history of astro sketching.
      We’ve seen some prime examples of sketching at its best.
      We’ve discussed sketching tools and techniques.
      And we’ve learned that sketching not only leaves you with a visual record of your observation…
      But most importantly, it trains your eye and improves your observing skills.
      Now it’s time for a little hands-on practice.
    • Remember, everyone starts somewhere…
      Observing log
      M Rosolina
    • Keep Looking Up!
      Orion
      Sketch Courtesy Frank McCabe
    • Choose one of the following objects to practice your sketching technique…
    • M6
      Courtesy Rony De Laet
    • Courtesy Jeff Young
    • Jupiter
      Courtesy Sol Robbins
    • Saturn
      Saturn
    • Courtesy Jeff Young
    • Graphite drawing pencils, pens, color pencils, Conte’ crayons, charcoal, pastels, chalk
      Sketch paper, copy paper, black paper, color paper,textured paper, waterproof paper
      Template, blending stump, eraser, eraser shield, sharpener
      Clipboard, red light, white light, table, chair
      Sketch Materials and Tools
    • These are some of the many online resources available for tutorials, templares, materials, advice, and companionship:
      Cloudy Nights Sketching Forum
      http://www.cloudynights.com/ubbthreads/postlist.php/Cat/0/Board/Sketching/page/0/view/collapsed/sb/5/o/all
      Astronomy Sketch of the Day
      http://www.asod.info/
      Jeremy Perez’s Belt of Venus
      http://www.perezmedia.net/beltofvenus/
      The Association of Lunar and Planetary Observers (ALPO) templates
      http://alpo-astronomy.org/
      Dick Blick Art Materials
      http://www.dickblick.com
      Astrosketching Resources
    • Copyright 2011 Michael Rosolina
      All contributor images are the
      property of their respective owners
      and are used here with permission