Basic object information
Name: Do 40
Type of object: Open cluster
Size: 12.0'
Number of stars: 12
Object classification: III 2 p n

Catalog position for epoch J2000.0
Right ascension: 20h 18m 12.0s
Declination: +37 50' 00"

Constellation: Cygnus

Observer: Iiro Sairanen
Obs. place: Lakasenpelto, Imatra, Finland
Date/Time: 20/21.10.2003 21.40

Telescope: 16" Dobson f 4.5

Magn: 146x

Filter:

Field: 21'

NE Lim.mag: 5,3

Background sky: 3

Seeing: 3

Height: 59
Visuality: I
Weather: -3,5C, random clouds

A typical, very poor Dolidze cluster.

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