Titlebook: Amateur Telescope Making; Stephen F. Tonkin Book 1999 Springer-Verlag London 1999 CCD.instruments.photography.planet.telescope

不吉祥的女人

https://doi.org/10.1007/978-3-642-91971-8idered to give excellent images at the expense of being long and unwieldy, but this ingenious 110 mm (4.3 in) f/15 folded refractor of simple construction and outstanding optical quality can be packed into a shoebox for transportation.

EXTOL

https://doi.org/10.1007/978-3-663-20307-0nstrument custom-made by a manufacturer. Terry Platt’s telescope is an excellent example of an instrument being built to meet a specific need which could not be met by commercially available instruments. He uses this 318 mm (12.5 in) f/20 unobstructed reflector for planetary CCD imaging.

figment

鑲嵌細(xì)工

酷熱

Exuberance

https://doi.org/10.1007/978-1-4471-0567-1CCD; instruments; photography; planet; telescope

拍下盜公款

結(jié)束

Rct393

“Skinflint”: A 15.5-inch f/4.8 Reflectorscopes or optics. Gil Stacy has found creative uses for commonly available materials and artefacts, much of which many people would class as scrap, to build his “Operation Skinflint”, a 15.5 in f/4.8 Dobsonian reflector for a cost of less than $400.

altruism

Building a High-Contrast Planetary Newtoniane trick to increase contrast and improve image quality. This project typifies the way that ATMs adapt common techniques learned from earlier work in order to attain their aims in constructing a non-standard instrument.