CCD Astrophotography: High-Quality Imaging from the Suburbs (The Patrick Moore Practical Astronomy Series)
Language: English
Pages: 193
ISBN: 0387262415
Format: PDF / Kindle (mobi) / ePub
This book details an approach to the problem of getting high-quality astronomical images under light-polluted conditions. The book is for amateur astronomers interested in CCD imaging, especially those who have to work under suburban conditions. It outlines the materials and equipment used for high-quality imaging. The many wonderful images produced allow the reader to see the product of – initially – a fellow beginner’s efforts. Respectable images are attainable with modest equipment. This book outlines a complete and thoroughly tested working program for every beginner to achieve high-quality digital imaging.
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Scheiner disk describing a mask with two holes. Two wooden dowels placed over the end of the optical tube assembly (OTA) serve a similar function. I like the dowels better. A Meade metal blue dew shield for the LX200 (Meade Instrument Corporation) does not see much use, as the observatory walls and dome provide adequate protection of both telescopes from stray/off-axis light. Depending on direction being imaged, if stray light is Equipment Inventory 47 Figure 2.30. Pyramid 12-v controller.
As a “starburst galaxy” and has been the subject of Hubble Space Telescope studies. 136 CCD Astrophotography: High Quality Imaging from the Suburbs Figure 5.98. Spiral Galaxy UGC 3587, Stellarvue Nighthawk @ f/6. Figure 5.99. Galaxies UGC 4042, UGC 4039, CGCG 148-33, and UGC 4032, Stellarvue Nighthawk @ f/6. A Collection of Astrophotos 137 Figure 5.100. Galaxies NGC 3185, NGC 3189, NGC 3187, and MCG4-24-22, Stellarvue Nighthawk @ f/6. The central three galaxies are part of the Hickson 44.
Astrophotography: High Quality Imaging from the Suburbs ated by dark current. Using image processing software to subtract the dark frame from the raw image leaves only the object. The dark noise is eliminated. DDP Filter DDP stands for Digital Development Processing. This an image processing routine used in many software programs. DDP processing allows both bright and dim parts of an astronomical object to be displayed at the same time. DDP essentially compresses washed-out regions of an object.
Is illuminated in order to render the lines visible against a dark background sky. Right Ascension (R.A.) Right ascension is one of the coordinates in a system used by astronomers to locate celestial bodies in the sky. It is similar to longitude on the Earth. Right ascension is measured in hours of time, from 0 to 24. RMS Value This is a complicated mathematical term—the square root of the average of the squares (root mean square) of the instantaneous values. It is the square root of the.
Size but with a long focal length. The worm-gear motor-drive system has enough precision to enable long-exposure guided photography. Theoretical pointing accuracy is 0.333 arc-seconds (1 arc-second is 1/3,600 of a degree). With the motor engaged, the telescope tracks at a precise sidereal rate required to track the stars across the sky. The electronics of the LX200 are integrated in the forkmount design, and “observatory-level” precision in tracking, guiding, and slewing are claimed by Meade.