We are probably nearing the limit of all we can know about astronomy.
/ Simon Newcomb /



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.


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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]
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M51 + SN 2011dh (Galaxy)
Also known as: Whirlpool galaxy
Right ascension: 13h 30m Declination: 47° 8'
Constellation: Ursa Major
Date/time: 2011.06.21 21:30 UT
Equipment: 12" f/5 Newtonian
FoV: 25' Magnification and filter(s): 167x
Seeing: 6/10 Transparency: 3/5
Location: Nádasdladány, Hungary
Observer: Ferenc Lovró
Description:

Today was the Summer solstice, so it's not surprising that even at 11pm the Western horizon is still shining in bluish colour, however at East the hazy patch of the Summer Milkyway is already easily noticeable. The spiral structure of the M51 is readily visible at 71x, surprisingly easy and so is the supernova SN2011dh, which I estimate to be at 12.3m and is located in the middle of a large outer spiral arm towards ESE from the galactic core. At such a high brightness this supernova is possibly one of the brightest for this year, at a very easy position for Northern hemisphere observers also with much smaller scopes.


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