Any sufficiently advanced technology is indistinguishable from magic.
/ 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.


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:



Narrow bandpass filters

   Such filters are used to eliminate wavelengths that are originated from sources of light pollution, mostly various kinds of urban light. This means, that they are produced so that wavelengths of those malicious sources are cut down to a minimum, whereas other wavelengths of light are allowed to pass the filter. The result is a darker sky background, that permits faint details of nebulae to be observed. Unfortunately as no pain no gain, the filter also eliminates some of the starlight, therefore the limiting magnitude decreases slightly, therefore such filter will not help in observing faint galaxies under heavy light pollution skies.

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About me
My equipment

DIY - Cheshire Eyepiece
DIY - Apodizing mask

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


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

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