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(IAAC) Harvard 15/Trumpler 26 - 4.5inch F/7.8



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 17 July 90, ab21h00UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual): 6,2
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Japanese 4.5inch F/7.8
Magnification: 36x, 72x
Filters used: no
Object: Harvard 15 / Trumpler 26
Category: open cluster
Constellation: OPH
Object data: p9.2 -  diam.10' - at 30'NNE of 45 OPH v4.4
RA/DE: 17h28.5m, -2928'
Description: in the same field as 45 OPH, visible as a concentration of
faint stars: 6 to 7 mag8 stars among others fainter; at 72x, it fills half
of the field of view.



Yann Pothier	tel: 01 43 41 43 29
11 impasse Canart, 75012 PARIS, FRANCE
Email: ypothier@abi.snv.jussieu.fr
Site : http://pegase.unice.fr/~skylink/publi/cielextreme