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  • Comet Machholz
    IMAGE DETAILS Comet Machholz and Pleiades Camera Canon EOS 300D Telescope Celestron Achromatic Refractor 80 Nikos Paschalis

    Original URL path: http://nunki.gr/comet%20machholz%20and%20pleiades.htm (2016-02-13)
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  • Conjunction Moon-Venus-Jupiter 2012
    15 sec ISO 800 Mount portable tripod Processing Details Photoshop Target details Conjunction is a term used in positional astronomy It means that as seen from some place usually the Earth two celestial bodies appear near one another in the

    Original URL path: http://nunki.gr/conjunction%20moon-venus-jupiter%202012.htm (2016-02-13)
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  • Nova 2013 Delphini
    camera Exposure Time Luminance R 10X 60sec More Details Environment Temperature Camera Temperature 35οC Mount Planewave Guiding Unguided Processing Details Photoshop Maxim Notes Weather Transparence Humidity 36 Target details Nova 2013 Delphinus discovered by Mr K oichi Itagaki Teppo cho Yamagata Japan on 14th of August 2013 with magnitude 6 8 A nova plural novae or novas is a cataclysmic nuclear explosion in a white dwarf star It is caused by the accretion of hydrogen on to the surface of the star which ignites and starts nuclear fusion in a runaway manner Novae are not to be confused with supernovae or luminous red novae A nova is a sudden brightening of a star Novae are thought to occur on the surface of a white dwarf star in a binary system If these two stars are close enough material from one star can be pulled off the companion star s surface and onto the white dwarf Subtypes Novae are classified according to the light curve development speed thus in NA Fast novae with a rapid brightness increase followed by a brightness decline of 3 magnitudes to about 1 16 brightness within 100 days NB Slow novae with a 3 magnitudes decline

    Original URL path: http://nunki.gr/Nova%202013%20Delphini.htm (2016-02-13)
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  • Vega
    brightest star in the constellation Lyra the fifth brightest star in the night sky and the second brightest star in the northern celestial hemisphere after Arcturus It is a relatively close star at only 25 light years from Earth and together with Arcturus and Sirius one of the most luminous stars in the Sun s neighborhood Vega has been extensively studied by astronomers leading it to be termed arguably the next most important star in the sky after the Sun Vega was the northern pole star around 12 000 BC and will be so again around AD 13 727 Vega is only about a tenth of the age of the Sun but since it is 2 1 times as massive its expected lifetime is also one tenth of that of the Sun both stars are at present approaching the midpoint of their life expectancies Vega has an unusually low abundance of the elements with a higher atomic number than that of helium Vega is also a suspected variable star that may vary slightly in magnitude in a periodic manner It is rotating rapidly with a velocity of 274 km s at the equator This is causing the equator to bulge

    Original URL path: http://nunki.gr/Vega.htm (2016-02-13)
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  • Albireo
    index B8Ve 0 30 Mass Radius 3 7 solar 2 7 solar Inclination Eccentricity Temperature 13200 Kelvin Date Time 1 9 2012 18 20 UTC Location Nunki Observatory Skiathos Optics Celestron C11 HD f 10 Tools CCDsoft Camera SBIG ST 2000XM with CFW10 Astrodon filters Exposure Time Luminance 10 X 30sec RGB 5 X 60sec each More Details Environment Temperature 24oC Camera Temperature 5οC Mount Paramount ME Guiding Unguided Processing Details Photoshop Maxim CCDsoft Notes Weather 8 10 Transparence 3 6 Humidity 70 Target details Albireo β Cyg β Cygni Beta Cyg Beta Cygni is the fifth brightest star in the constellation Cygnus Although it has the Bayer designation beta it is fainter than Gamma Cygni Delta Cygni and Epsilon Cygni Albireo appears to the naked eye to be a single star of magnitude 3 but through a telescope even low magnification views resolve it into a double star The brighter yellow star actually itself a very close binary system makes a striking colour contrast with its fainter blue companion star Albireo is 380 light years 120 pc away from the Earth When viewed with the naked eye it appears to be a single star However in a telescope it

    Original URL path: http://nunki.gr/Albireo.htm (2016-02-13)
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  • Double rainbow
    IMAGE DETAILS Double rainbow over Skiathos Nikos Paschalis

    Original URL path: http://nunki.gr/double%20rainbow.htm (2016-02-13)
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  • Rainbow
    IMAGE DETAILS Rainbow over Skiathos Nikos Paschalis

    Original URL path: http://nunki.gr/rainbow.htm (2016-02-13)
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  • Lightnig strikes
    IMAGE DETAILS Lightning strikes during a storm Nikos Paschalis

    Original URL path: http://nunki.gr/lightning%20strikes.htm (2016-02-13)
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