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Cosmic Challenge, The Ultimate Observing List for Amateurs

Creator: Philip S. Harrington | Science - 2010-10-21

An open mirror cell promotes the cooling process, but to speed it along even more, many amateurs have installed small muffin-style cooling fans behind their Newtonian's primary mirrors. In fact, many of the mirror cells in today's Newtonians ...

Publisher: Cambridge University Press

About this book
Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its unique mix of Solar System and deep-sky targets will have observers hunting for the Apollo lunar landing sites, searching for satellites orbiting the outermost planets, and exploring hundreds of star clusters, nebulae, distant galaxies, and quasars. Each target object is accompanied by a rating indicating how difficult the object is to find, an in-depth visual description, an illustration showing how the object realistically looks, and a detailed finder chart to help you find each challenge quickly and effectively. The guide introduces objects often overlooked in other observing guides and features targets visible in a variety of conditions, from the inner city to the dark countryside. Challenges are provided for the naked eye, through binoculars and the largest backyard telescopes.

Newton's Revenge

Creator: Philip Enke |

“It's like watching a movie,” Blankenship said. “Pardon?” “When you punch it like that, and I see the landscape screaming by, but I don't hear so much as the slight hum of a cooling fan from the engine, and I don't feel the sensation of being ...


230 pages

Lunar and Planetary Webcam User's Guide

Creator: Martin Mobberley | Science - 2006-08-03

It can be fascinating to examine a perfect artificial star with a perfectly colli- mated Newtonian. The act of merely taking the rear ... It also featured a cooling fan built into the primary mirror cell (Figure 3.10). The whole optical tube assembly only ...

Publisher: Springer Science & Business Media

About this book
In the last few years, cheap webcams have revolutionized amateur astronomy by providing a very inexpensive alternative to purpose-made astronomical CCD cameras, which use refrigerated imaging chips and are thus extremely expensive. Webcams are capable of more advanced work than 'normal' digital cameras because their simple construction makes it easy to remove the webcam's lens, allowing it to be interfaced directly to a telescope. Using a webcam is not difficult but most amateur astronomers who have tried to do this do not achieve the finest results, despite the webcam's potential. There are numerous imaging and image processing tricks and techniques, and all of them are needed to get the best results. Along with webcam technology has come simple-to-use image processing and enhancement using a PC: the most powerful technique is, 'stacking' in which the best images (out of hundreds) are selected and summed automatically to provide startlingly good results. "Lunar and Planetary Webcam User’s Guide" de-mystifies the jargon of webcams and computer processing, and provides detailed hints and tips for imaging the Sun, Moon and planets with a webcam. He looks at each observing target separately, describing and explaining all specialised techniques in context. Glance through the images in this book to see just how much you can – easily – achieve by using a webcam with your telescope!

Cooling Directory

Cooling Fan for Newtonian - Equipment - Cloudy Nights
Page 1 of 2 - Cooling Fan for Newtonian - posted in Equipment: Hi gang,I just installed a cooling fan for my 8 f4.5 Newtontian and was wondering if anybody else had ...

DIY Active Cooling of Newtonian Telescope - Deep Sky Watch
Attaching a Cooling Fan to a Newtonian Telescope The Thermal Problem. Cooling a reflector telescope is extremely important, especially if its fairly large (over 8").

Cooling Fans and Newtonian Thermal Issues Research ...
Cooling Fans and Newtonian Thermal Issues Research - posted in Beginners Forum: Ive been trying to tackle thermal issues in my XT8 and after going over 400 pages of ...

Using fans with Newtonian telescopes -
The reason for the limit on the fan's cooling ability is that heat transfer within the glass itself becomes the bottleneck. Glass conducts heat poorly which limits ...

Newtonian Reflector Cooling Fan - DIY Astronomer ...
Newtonian Reflector Cooling Fan This mod is also availalbe on my blog 92mm 12v fan (eBay – £5.56) 92mm fan finger guard (eBay – £1.78) 12v fan speed control...


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