When the Sun shrinks to a dull red dwarf, it will not be dying. It will just be starting to live and everything that has gone before will merely be a prelude to its real history.
/ 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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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]
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NGC 6891 (Planetary nebula)
Right ascension: 20h 16m Declination: 12° 44'
Constellation: Delphinus
Date/time: 2009.08.20 23:45 UT
Equipment: 12" f/5 Newtonian
FoV: 13' Magnification and filter(s): 250x + UHC-S filter(s)
Seeing: 5/10 Transparency: 5/5
Location: Tarján, Hungary
Observer: Ferenc Lovró
Description:

A very tiny but bright planetary nebula, which looks pretty much star-like at small powers, but above 100x it starts to show some dimensions, looking like a blurred star. At 250x it seems quite large, without a filter it has some nice bluish colour. With an UHC filter and especially with averted vision its diametre grows even larger. Because of its small size it's very hard to discover any details, but by the time it looks as if the core has some tiny horn eastwards. SQM reading: 21.01 m/arcsec^2 9°C.


Hi-resolution image: [ reversed sketch | original sketch ]
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All text and images are ©opyright of Ferenc Lovró. All rights reserved worldwide.

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