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(IAAC) Trumpler 1 - 4.25inch F/7.8



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 23 July 90, about 00h00 UT
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): 4
Moon up (phase?): no
Instrument: Newtonian 4.25" F/7.8
Magnification: 36x-72x
Filters used: no
Object: Trumpler 1
Category: open cluster
Constellation: CAS
Object data:  diam.4' / 25 stars
RA/DE: 01h35.6m, +6118'
Description: very small, 3 to 5 stars with a little nebulosity; at 72x, 3-4
"bright" stars are lined up with another line of faint stars shaping a
triangle; a total of about 10 stars.





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