Celestron 127EQ PowerSeeker Telescope
Celestron 127EQ PowerSeeker Telescope
optics astronomy – click on the image below for more information.
- 3x Barlow Lens
- German Equatorial Mount
- 127mm Aperture
- 1000mm Focal Length
- Comes with aluminum tripod and accessory tray
optics astronomy
CES1071 Features: -Telescope. -PowerSeeker collection. -Color: Black. -Material: Aluminum. -127 mm (5”) Newtonian reflector. -3x Barlow lens triples the magnifying power of each eyepiece. -Quick and easy no-tool setup. -Slow motion controls for smooth tracking. -Erect image optics – ideal for terrestrial and astronomical use. -Fully coated glass optical components with high transmission coatings. -Enhanced image brightness and clarity. -Accessory tray for convenient storage of accessories. -”
Celestron 127EQ PowerSeeker Telescope
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ASA Astrosysteme – High Precision Optical Guidance Systems
Astrosysteme Austria (www.astrosysteme.at) sees its task in making the latest technologies of astrophotography available and affordable for the amateur. Uncompromising quality levels and suitability for the practical use are the centre of our attention. Hence, in the course of the last two years the basis of a product line was developed which claims the name reference class. Astrophotography has experienced an unheard of quantum leap by the digital age of CCD-technology. These CCD-cameras as well as the new digital reflex cameras and also the versatile possibilities of picture processing make completely new demands on optics and mechanics. Astrosysteme Austria has made it its objective to render exactly these components, optical devices, fully automatic mountings and tracking systems, applicable for the latest requirements in astrophotography. We are especially proud of our Astrographs with fast focal ratio and their wide corrected fields as well as the new mounts with direct drive
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Question by :]: I need help with my astronomy/physics homework badly?
I don’t understand it one bit and I am most likely going to fail this assignment so please help!!!
Two identical stars are moving in a circular orbit around one another, with an orbital separation of 2 AU. The system lies 180 light-years from Earth.
If we happen to view the orbit head-on, how large a telescope would we need to resolve the stars, assuming diffraction-limited optics at a wavelength of 5 \mu m?
Best answer:
Answer by Greg B
Use 63241.1 x the distance in light years to convert to AU. so your units are consistent.
Then by small angle approximation, you can use:
angular separation in radians is equal to the orbital diameter/ distance to the system.
Finally you can use the relationship for diffraction-limited optics to yield:
Diameter of optics = wavelength divided by angular separation
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