(IAAC) NGC 6907 / NGC 6908 - Newtonian 17.5" (445mm) F/4.5

[Yann POTHIER]

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6907 + NGC 6908
Category: galaxy SBBs/SBS4 + ?
Constellation: CAP
Object data 6907 : Vmag=11.3, Bmag=11.9, 
5.4'x4.0', PA46°, z=0.010614, vr=3182km/s
Object data 6908 : Vmag=14.6, Bmag=15.5, 0.3'x0.1', PA68°, z=?, vr=?km/s
RA/DE: 20h25m06.6s, -24°48'35" + 20h25m08.7s, -24°48'02" (2000.0)
Date and UT of observation: 11 august 2007, 22h40 UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.31 (30% of the time)
Transparency (1 to 5 - best to worst): 1
Seeing (1 to 5 - best to worst): 2
Height above horizon: 21°
Moon up (phase?): no
Instrument: Coulter 445mm/17.5" F/4.5
Magnification: 80-426x
Filters used: -

Description: at 271x, 6907 is a medium sized 
galaxy, moderately bright, seen at 80x on the 
verge between direct vision and averted vision; 
oval, about 1.4'x1.1' ENE-WSW, with very diffused 
edges and a brighter central area; an obvious 
central bar E-W is seen from which a NE spiral 
arm leaves, seen 75% of the observing time with 
averted vision, curving about 1.2' clockwise and 
containing a brighter zone [6908] from NE to N 
(PA60 to 90°) well detached from main body; at 
the opposite of the bar, a SW spiral arm is seen 
less than 5% of the observing time with averted 
vision at 271x, about 0.8' in length, much more 
in contact with the main body of the galaxy; a 
mag.11 star is 2.6' to the E..


-- 

Carpe noctem, Yann.

Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
yann.pothier at fnac.net
http://www.astrosurf.com/cielextreme