Object: NGC 6751 (PK 029-05.1; PN G029.2-05.9; ARO 101, Sa2-382)
Observer: Yann POTHIER (France)
Your skill: advanced (many years)     Category: planetary nebula
Constellation: AQL     Object data: Vmag=11.9; Bmag=12.5; 21"x21"; type 
III; central star of Vmag=15.4; discovered as a PN by Fleming in 1907; 
ELCAT: [OIII, 496+501nm] = 17 x [Hbeta, 486nm].     RA/DE: 19h05.92m, 
-05°59.6' (2000.0)     Date and UT of observation: 09 July 1994, 00h00 UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)     Limiting magnitude (visual in 
UMi): 6.0     Transparency (1 to 5 - best to worst): 1     Seeing (1 to 5 - best 
to worst): 3     Moon up (phase?): no     Instrument: Coulter 445mm/17.5" 
F/4.5     Magnification: 45-145x     Filters used: OIII

Description: at 45x, located as a nebulous mag13.5 star; at 87x, nice,
specially with averted vision; brighter towards the center; at 145x, small
PN, faint, homogeneous around a faint mag14 central star visible only 50%
of the time, another star of similar brightness is 6" from the E edge;
diameter estimated to be about 25"; a small group of stars (10 members of
mag12-14 in a diam1.5' area) at 5'S may be taken for NGC 6751 at low power.