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Creating and Enhancing Digital Astro Images

Part of the Patrick Moore’s Practical Astronomy Series Book Series

DOI: 10.1007/978-1-84628-703-9

ISBN: 978-1-84628-580-6

Publisher: Springer London - Springer Journals

Jan 1, 2007

1 - 10 of 16 Chapters

LitStream

Chapter 1The Joy of Image Processing

Pages: 1 –2

[So, what is image processing? Well, at its most basic, it’s the gentle art of manipulating a digital image to show its content to the best possible or desired effect.]
LitStream

Chapter 2A Digital Image — The Basics

Pages: 3 –8

[Well, what is a digital image? Perhaps it is easiest to start with one of the most familiar types of image we encounter. A printed photograph — whether the picture originates from a digital or film-based camera — will consist of a rectangular area covered with tiny dots of varying intensity and...
LitStream

Chapter 3Choosing Your Camera

Pages: 9 –18

[The most important things you need to decide when selecting a camera is what you want to use it for and how much money you have available to spend. After considering that, you really should ask a further question: “Am I sure?”, before proceeding. For many people, the answer is going to be that...
LitStream

Chapter 4Acquiring Images

Pages: 19 –25

[The overwhelming urge when you first get your camera is to take some images — any images will do. This is hardly surprising as, after spending the cash, everyone is anxious to know whether or not they have wasted their money. However, taking good images is not a skill learnt in a few minutes. It...
LitStream

Chapter 5What Is Best for ...

Pages: 27 –33

[The sections below describe broadly what the best combinations are for observing a particular type of astronomical object. The options it selects should be viewed not as restrictive, but as an indication of a good starting point.]
LitStream

Chapter 6Displaying Images

Pages: 35 –36

[One of the big surprises of looking at your images on a computer is that the view you get will vary considerably, depending upon a number of factors. You might think that all displays are much the same, and for purposes like word processing or email that’s pretty much the case, but in the more...
LitStream

Chapter 7Image Reduction

Pages: 37 –73

[As mentioned previously, the term “image reduction” covers the processing that must be applied to a set of images to remove all the artifacts generated by the detector and telescope. These processes must be undertaken for every object you wish to image. Under some circumstances shortcuts may be...
LitStream

Chapter 8Other Techniques

Pages: 75 –86

[You will find that there are many options in the menus of astronomical image processing packages. Not all could, strictly, be classified under the heading image processing, as they instead help to handle the image, while some provide information that can be useful.]
LitStream

Chapter 9Image Enhancement

Pages: 87 –99

[We have reached the point where the laborious image reduction stage is behind us and we have an image created from our mass of darks, flats and images. This is the point at which to backup the image both to hard disk and also to some removable media such as a DVD, USB memory stick or CD, as a...
LitStream

Chapter 10Handling Color Images

Pages: 101 –111

[There is a problem with imaging and image processing. It is addictive. A nice picture almost immediately rewards the effort taken, by reminding you of the beauty the universe has to offer and the fun you can have seeing it — I have one above my desk at work. And the only thing better than a good...

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