By Richard Handy; et al

Show description

Read Online or Download Astronomical sketching : a step-by-step introduction PDF

Best astronomy & astrophysics books

Variations on a Theme by Kepler (Colloquium Publications)

This publication relies at the Colloquium Lectures provided via Shlomo Sternberg in 1990. The authors delve into the mysterious function that teams, in particular Lie teams, play in revealing the legislation of nature through concentrating on the primary instance of Kepler movement: the movement of a planet lower than the appeal of the sunlight in response to Kepler's legislation.

Fundamentals of Physics and Chemistry of the Atmosphere

This e-book takes an introductory examine the physics and chemistry of the ambience and the weather dynamics. It presents the fundamentals in thermodynamics, fluid dynamics, radiation and chemistry and explains the main attention-grabbing difficulties present within the learn of the ambience of the Earth and planets. This booklet additionally deals the pc courses to unravel those difficulties.

Telescopes and techniques

Telescopes and strategies has proved itself in its first variants, having turn into most likely essentially the most typical astronomy texts, either for newbie astronomers and astronomy and astrophysics undergraduates. either prior variants of the e-book have been accepted for introductory functional astronomy classes in lots of universities.

The night sky, updated and expanded edition : soul and cosmos

Ever when you consider that Homo sapiens first regarded up on the stars, we as a species were trying to find which means within the mysteries of the evening sky. Over the millennia, as our wisdom, technological know-how, and know-how built, the tales we advised ourselves in regards to the universe and our position in it constructed in addition. within the evening Sky, Richard Grossinger strains these advancements, overlaying a number of points of humanity's advanced dating to the cosmos.

Additional info for Astronomical sketching : a step-by-step introduction

Sample text

1 Sketching a Comet and Its Motion I will use a telescopic sketch of comet 73P-C/Schwassmann-Wachmann 3 as an example in this tutorial. This comet was relatively bright at the time of the observation at about 6th magnitude. Its beautiful, soft glow swept across the field of stars like the expanding wake of a speed boat on glassy water. The pseudonucleus was stellar in appearance with an elongated bright spike extending to the southwest. The flowing tail was striated with varying levels of luminosity and consisted of a bright, narrow, inner portion enveloped by a shorter, fainter, outer fan.

3. The dashed circle represents how I visualized this diameter on the sketch. Step 4: Sketching the first layer of the coma With the size and profi le of the coma in mind, lightly load your blending stump with graphite (see Using a Blending Stump on page 153). Take the blending stump and begin swirling it lightly, starting at the point you marked in Step 2. Using a delicate circular motion, proceed outward from the center to define the coma’s visible diameter. 4) As you approach the outer edge of the coma, decrease the pressure on the blending stump to the lightest possible touch.

Rapid and randomized motions seem to work best, creating a uniform smooth gray tone. If you feel that the tone is too light, simply erase the area with an Art Gum eraser, clean the eraser crumbs off with your brush, and use the sponge without applying any chalk. This will allow you to produce a slightly darker gray value, using any residual chalk that has built up on the sponge. 8 eyepiece and try to duplicate them as accurately as possible in your sketch. 7) Step 6 Touch up the crater contours with the sharpened white 2B Conté Crayon.

Download PDF sample

Rated 4.10 of 5 – based on 34 votes