(IAAC) NGC 6572 - 8" F/10

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6572 (PK 043+37.1; PN G043.1+37.7; ARO 5, VV 82)
Category: planetary nebula
Constellation: HER
Object data: Vmag=8.8; Bmag=9.3; 20"x13"; type II+IIIb; central star of
Bmag=12.5; discovered by Struve in 1827; ELCAT: [OIII, 496+501nm] = 15 x
[Hbeta, 486nm].
RA/DE: 16h44.49m, +2348.0' (2000.0)
Date and UT of observation: 31 July 1989, morning
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): 2
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Meade SCT 8"/203mm  f/10
Magnification: 87-312x
Filters used: -
Description: at 145x, found at this power; forms a triangle with 2 stars;
already nebulous at 100x (slightly); at 225x, compact nebulosity; at 310x,
bluish, large and homogeneous.
Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
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