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(IAAC) Dolidze 26 - 17.5inch F/4.5



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 26 December 94, ab.00h30UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual): 6,0
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Coulter 17.5inch F/4.5
Magnification: 74x
Filters used: no
Object: Dolidze 26
Category: open cluster
Constellation: CMi
Object data:  diam.24' - trumpler type IV1p
RA/DE: 07h30.1m +1154'
Description: large cluster of medium brightness, triangular shaped like an
arrow head pointing the West; NW and SO borders are linear and E side
curved inward; this cluster is well detached with quite sharp edges. A very
bright yellow star maybe mag.6-7 [6 CMi of v4.5, spectral type K0] is
separated but close to the NW border; maybe 30-40 stars: one of mag6, one
of mag9, 4 of mag10, 10 of mag11-12 and 20 of mag13-14; the density of
stars is weak and the cluster is completely resolved without central
condensation.

I can provide a scanned scheme of Dolidze 26 to anyone who can read the
binhex encoding of Eudora (for Mac); just mail me to try
(ypothier@abi.snv.jussieu.fr), it works sometimes with other
configurations...


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