astro14

christina · christina

1. Padiotileskopia 2. Hliaka tileskopia 3. Paratiritiria anixneusis Netrino 4. Paratiritiria barutikwn kumatwn

dafni

The refractor is the oldest form of telescope and was first used by Galileo in 1609. As explained above, it is a simple device with a lens for an objective which refracts the light down to a focal point. Refractors have one inherent problem in that the objective lens tends to act as a prism and split the li...

Anonymous

Catadioptric telescopes are combination telescopes, which use a mirror as an objective and a large correcting "lens" in front of it. The purpose of this plate is to correct the defects in the curvature of the mirror. Hence these instruments are coma free. In these telescopes, the light p...

dafni

The reflecting telescope was first used by Issac Newton in 1672, consequently, they are commonly referred to as Newtonian telescopes. This telescope uses a curved mirror as an objective, and since mirrors are easier to make than large lenses, these are considerably cheaper than refractors. In fa...

dafni

http://www.nrao.edu/whatisra/radiotel.shtml

dafni

http://spiff.rit.edu/classes/phys230/lectures/nonoptical/nonoptical.html

dafni

Since Galileo introduced the telescope to astronomy in 1609, the device has been refined and adapted several times. Amateur and professional astronomers can find a telescope for any purpose, and which kind to use depends on budget, experience level, and what youll be viewing Three of the most popu...

mwp · pyrinikos dikigoros

www.cartage.org.lb/en/themes/Sciences/Astronomy/Equipementdevices/Telescope/kindstelescope

Topic		Started By	Replies	Views	Last Post
	Alla eidi tileskopiwn (Preview) 1. Padiotileskopia 2. Hliaka tileskopia 3. Paratiritiria anixneusis Netrino 4. Paratiritiria barutikwn kumatwn	christina	1	463	Mar 23, 2008 by specialistas
	refracting telescopes (Preview) The refractor is the oldest form of telescope and was first used by Galileo in 1609. As explained above, it is a simple device with a lens for an objective which refracts the light down to a focal point. Refractors have one inherent problem in that the objective lens tends to act as a prism and split the li...	dafni	0	320	Mar 8, 2008 by dafni
	catadioptric telescopes (Preview) Catadioptric telescopes are combination telescopes, which use a mirror as an objective and a large correcting "lens" in front of it. The purpose of this plate is to correct the defects in the curvature of the mirror. Hence these instruments are coma free. In these telescopes, the light p...	Anonymous	1	351	Mar 8, 2008 by dafni
	reflecting (Preview) The reflecting telescope was first used by Issac Newton in 1672, consequently, they are commonly referred to as Newtonian telescopes. This telescope uses a curved mirror as an objective, and since mirrors are easier to make than large lenses, these are considerably cheaper than refractors. In fa...	dafni	0	327	Mar 8, 2008 by dafni
	episis wraio site gia ta radiotileskopia (Preview) http://www.nrao.edu/whatisra/radiotel.shtml	dafni	0	394	Mar 8, 2008 by dafni
	pros kyrio politi wraio site (Preview) http://spiff.rit.edu/classes/phys230/lectures/nonoptical/nonoptical.html	dafni	0	347	Mar 8, 2008 by dafni
	kinds of telescopes (Preview) Since Galileo introduced the telescope to astronomy in 1609, the device has been refined and adapted several times. Amateur and professional astronomers can find a telescope for any purpose, and which kind to use depends on budget, experience level, and what youll be viewing Three of the most popu...	dafni	0	324	Mar 8, 2008 by dafni
	gia plirofories (Preview) www.cartage.org.lb/en/themes/Sciences/Astronomy/Equipementdevices/Telescope/kindstelescope	pyrinikos dikigoros	1	406	Mar 6, 2008 by mwp
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