The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
/ Arthur C. Clarke /



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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Struve 2140 (Binary star)
Also known as: Ras Algethi, alpha Herculis, alpha Her
Right ascension: 17h 15m Declination: 14° 23'
Constellation: Hercules
Date/time: 2009.09.06 19:15 UT
Equipment: 12" f/5 Newtonian
FoV: 19' Magnification and filter(s): 167x
Seeing: 6/10 Transparency: 3/5
Location: Nádasdladány, Hungary
Observer: Ferenc Lovró
Description:

A nice bright pair, A is definitely orange and at least 2 magnitudes brighter than B, which looks white/yellow. A: 3.5m, B: 5.4m, A-B: 4.7" PA: 105°. Component D is much fainter and looks perfectly white, with 11m, A-D: 90", PA: 40°.
Hi-resolution image: [ reversed sketch | original sketch ]
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