A few months ago I bought a publication from Axilone-Astronomie with the title "ASTRODESSIN, Observation & dessin en astronomie" This double volume is in my opinion the best book around about sketching at the eyepiece. It is in french, but with a dictionary it is possible to understand most of the text. But a large part of both books is packed with sketches, and that is an international language for amateur astronomers! All of the sketches, made by different contributors to the book, are of a high quality. You will find the Sun, Moon, Comets, Eclipses, Planets and all different types of deepsky objects/. The book is large (A4+) and the print quality is excellent. A truly awesome and inspiring book, that shows how beautiful observing at the eyepiece is. Nothing reflects visual astronomy and the experience at the eyepiece better than a sketch. Highly recommended..... well done guys!
At the moment I am trying out new methods for digital processing of my sketches. The sketch below, of Stephenson 1, an open cluster in Lyra, is based on an observation I did a few years ago. I do all my sketches in pencil and on white paper, scan them into Photoshop, and proces them. The method I use is based on several different manuals from fellow astronomers who sketch at the eyepiece, but mostly on Peter Vercauteren's manual (http://www.astronomydrawings.com for Peter's website) and Jeremy Perez's manual ( http://www.perezmedia.net/beltofvenus/ ). The beautiful sketches of these guys are an inspiration for me!
Sketch of Stephenson 1 in Lyrae, from 30th august 2010. Instrument Orion Optics UK 300mm,
Nagler 22mm, magnification 73x, true fov about 1 degree, south is up, west is to the left.