Telescopes are in some ways like time machines. They reveal galaxies so far away that their light has taken billions of years to reach us. We in astronomy have an advantage in studying the universe, in that we can actually see the past.
/ Sir Martin Rees /



In memoriam Halton C. Arp (1927-2013).


My astronomy sketches. Hover mouse over image for the inverted look. For fainter objects, take a look at the black-on-white original, sometimes it reveals more details.


Need advice? Want to discuss an observation? Feel free to contact me at flovro gmail*com.

ÚJ! Amennyiben elérhető, a ikonra kattintva magyarul is olvashatod az észlelést.


Show me the newest sketches!
By type: open clusters [67] globular clusters [14] diffuse nebulae [3] dark nebulae [0] planetary nebulae [27] variable stars [18] binary stars [23] asterisms [2] galaxies [119] quasars [1] planets [2] minor planets [1] comets [5] Sun [0] Moon [5] other objects [8]
By catalogue: Messier 1-50 [20] Messier 51-110 [18] NGC 1-1000 [17] NGC 1001-2000 [21] NGC 2001-3000 [32] NGC 3001-4000 [25] NGC 4001-5000 [18] NGC 5001-6000 [22] NGC 6001-7000 [40] NGC 7001-7840 [35] IC 1-5386 [1] other catalogues [71] uncataloged [10] [25]
By constellation:



O. Struve 390 (Binary star)
Right ascension: 19h 55m Declination: 30° 12'
Constellation: Cygnus
Date/time: 2009.10.03 18:30 UT
Equipment: 12" f/5 Newtonian
FoV: 10' Magnification and filter(s): 250x
Seeing: 4/10 Transparency: 2/5
SQM: 18.33 m/as2 Temperature: 6°C
Location: Nádasdladány, Hungary
Observer: Ferenc Lovró
Description:

Component A is the brightest part of of the trio by far. They split up easily even at 71x. A: 6.5m, white. B: 9.5m, slightly bluish. C: 11m. A-B: 10", PA: 20°. A-C: 16", PA: 170°.


Hi-resolution image: [ reversed sketch | original sketch ]
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