The history of astronomy is a history of receding horizons.
/ Edwin Powell Hubble /



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:



NGC 869 + NGC 884 (Open cluster)
Also known as: Double Cluster
Right ascension: 2h 21m Declination: 57° 12'
Constellation: Perseus
Date/time: 2009.07.26 1:30 UT
Equipment: 12" f/5 Newtonian
FoV: 1° Magnification and filter(s): 45x
Seeing: 7/10 Transparency: 3/5
Location: Jászszentlászló, Hungary
Observer: Ferenc Lovró
Description:

This observation and sketch was made on an early dawn hour in the Kiskun Astro Camp near the village of Jászszentlászló, Hungary. As the Sun was already approaching the southern horizon, the NELM was getting worse at a high rate. Therefore I've decided to sketch something easy that's made of many bright stars. Out of a sudden I've picked the famous Double Cluster, which turned out to be a paint to sketch with their plenty of bright stars. So, I was racing with the Sun, as the Venus was already high above the horizon. Under country skies, this pair of open clusters can be seen to the naked eye as a small fuzzy spot near the easily recognizable W-shape of the constellation Cassiopeia. It's one of the most remarkable objects of the Northern Hemisphere, so I can't really imagine why it was not included in the famous catalogue of Messier. From my home country it is a circumpolar object, so it can be seen through the entire year. It's so easy, that it cen be resolved with the smallest telescopes or binoculars, therefore an great catch for everyone. SQM reading: 20.91 m/arcsec^2, 9°C.


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.

[2253926]