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(IAAC) NGC 6058 - 17.5" F/4.5



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6058 (PK 064+48.1; PN G064.6+48.2; ARO 49, VV 76)
Category: planetary nebula
Constellation: HER
Object data: Vmag=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, +4041.0' (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.

I can provide a scanned drawing of NGC 6058 to anyone who can read the
binhex encoding of Eudora (for Mac); just mail me to try
(yann.pothier@fnac.net), it works quite often with other configurations...


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


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