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(IAAC) Berkley 58, NGC 7790, NGC 7788 - 8-inch F/10



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 27 December 92, ab.20hTU
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual): 5,6
Seeing (1 to 5 - best to worst): 4
Moon up (phase?): no
Instrument: Meade 8inch F/10
Magnification: 87x, 145x
Filters used: no
Object: Berkley 58
Category: open cluster
Constellation: Cas
Object data: diam.8' - 30 stars - trumpler type IV2p
RA/DE: 00h00.2 +60 58
Description:
Cluster quite faint and little (estimated diam. about 4.5'); 20 stars
of mag13.5 and fainter are popping into view on a fuzzy background; 2
brighter granulous patches (about 1.5' in diam.) are apparent on the
NE and SW sides of the cluster (they look like the a "positive" of the
eye of the Owl Neb.); there is a mag7 star 20' NE from center and NGC
7790 and NGC 7788 are standing 20' NW and 40' NW respectively.
I can provide a scanned drawing of Berkley 58 to anyone who can read
the binhex encoding of Eudora (for Mac); just mail me to try
(ypothier@abi.snv.jussieu.fr)
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