[Prev][Next][Index][Thread][Search][Objects]
(IAAC) Obj: ngc 7008 - Inst: 40" f/5 dob
Observer: Mark G.Birkmann
Your skills: Intermediate (some years)
Date/time of observation: 9-04-2000, 6:50 UT (1:50 CDT)
Location of site: New Haven, Missouri (Lat ~38, Elev ~700 feet)
Site classification: Rural
Sky darkness: 4 <1-10 Scale (10 best)>
Seeing: 4, sometimes 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 40" f/5 dob
Magnification: 143x, 408x, 858x
Filter(s): orion ultrablock
Object(s): ngc 7008
Category: Planetary nebula.
Class: 3
Constellation: Cygnus
Data: mag 13.3(p) size mag of central star 13.2 size 86"
Position: RA 21h:00m 32.8s DEC +54:32' 36"
Description:
This planetary was bright and easy to find at low power due to its size. No
color was seen at any power. The central star was seen at all powers. The
view was best at moderate to high power, 858x was no better or worse than 408x.
The orion ultrablock gave a slight improvement in contrast but did not reveal
any additional detail. The borders of this nebula were diffuse and smooth with
the exception of the inside edge on the east side and the outside edge on the
northwest and southwest sides. At these three points there was a decrease in
brightness and the edge of the nebula was slightly concave. The north side of
the nebula contained a bright hour glass shaped knot of nebulosity. The
southern end of the nebula was a little brighter than the rest of the nebula
and a small area around a faint star on to the southeast of the central star.
The bright star to the southeast was a distinct yellow. A drawing can be seen
at http://members.fortunecity.com/faintfuzzy/drawings.htm
--
Optional related URLs: http://www.fortunecity.com/greenfield/twyford/637/drawing
s.htm
** This observing log automatically submitted via the Web from:
http://www.visualdeepsky.org/enter-log.html
To UNSUBSCRIBE from the 'netastrocatalog' lists, use the Web form at:
http://www.visualdeepsky.org/subscribe.html