Πηγη: http://groups.yahoo.com/group/digital_astro/message/89474?l=1 I am excited to announce the availability now of my new book: A Guide to Astrophotography with Digital SLR Cameras You can find out a lot more about it, including sample chapters and sample video tutorials, on my web site at: http://www.astropix.com/GADC/GADC.HTM or http://tinyurl.com/s7sb7 The book explains how digital cameras work and everything you need to know about how to take astrophotos with them. It also tells you how to process the images after you have shot them, with step-by-step directions that will produce beautiful results. With this book you will discover how easy it is to: • Take beautiful astrophotos with just a simple camera on tripod. • Shoot the Sun, Moon, stars, nebulae, galaxies, and other celestial objects. • Use your DSLR camera to shoot through your telescope. • Determine the correct exposure and ISO to use for astrophotos. • Focus your camera for razor-sharp images. • Take short exposures of deep-sky objects and combine them into a longer exposure. • Shoot raw format images and improve them with support frames for calibration. • Perform brightness, contrast and color correction. • Correct vignetting and uneven field illumination. More than 100 minutes of video tutorials with step-by-step instructions for complete image processing and enhancement of JPEG and Raw images are included on the CD-ROM. The original image files used in the tutorials are also included for you to practice with. This book on CD-ROM is not a traditional paper book. It is a digital book in html format that you will be able to view on your computer in any internet web browser such as Microsoft Internet Explorer, Firefox, or Opera. It is compatible with both Windows and Mac operating systems. I would also like to express my deep gratitude to the members of this group who have helped me while writing the book. Jerry Lodriguss