Observer: Yann POTHIER (France)
Your skill: advanced (many years) Category: planetary nebula Constellation: HER Object data:
magg=12.9; Bmag=13.3; 25"x20" (32"x27" in IDB); type III+II; central star of Vmag=12.8; discovered by
Herschel in ????; ELCAT: [OIII, 496+501nm] = 14 x [Hbeta, 486nm]. RA/DE: 16h04.42m, +40°41.0'
(2000.0) Date and UT of observation: 17 February 1994, 02h00 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): 2 Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no Instrument: Coulter 445mm/17.5" F/4.5 Magnification: 125x
Filters used: OIII
Description: at 125x, small PN, bright, gradually brighter towards the center, stellar nucleus of mag13.5,
overall shape slightly oval (estimated on drawing to be 54"x43") in SSW-NNE axis; better seen with OIII
filter but no more internal detail.