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:



HIP 98298 (Various/other)
Also known as: Cygnus X-1
Right ascension: 19h 59m Declination: 35° 15'
Constellation: Cygnus
Date/time: 2015.11.01 18:15 UT
Equipment: 12" f/5 Newtonian
FoV: 13' Magnification and filter(s): 250x
Seeing: 6/10 Transparency: 4/5
SQM: 21.01 m/as2 Temperature: 3°C
Humidity: low Wind: none
Sight: 3 - definite details, interesting look
Difficulty: 1 - instantly visible, no dark adaptation or averted vision needed
Position: 2 - easy, bright star nearby
Location: Talpa Minor Observatory
Observer: Ferenc Lovró
Description:

Being one of the strongest X-ray sources on our sky, this star hides a really dark companion: the first ever suspected black hole, also know as Cygnus X-1.


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

Username:
Password:



Articles

About me
My equipment

DIY - Cheshire Eyepiece
DIY - Apodizing mask

Messier Marathon 2013 Tavasz [magyarul]
Messier Marathon 2015 Tavasz [PDF]NEW!


Advertisement


All text and images are ©opyright of Ferenc Lovró. All rights reserved worldwide.

[2372101]