Object: Open clusters DO 40 and DO 41           Constell: CYG

RA: 20h 19.2m (-41)     Decl: +37° 45'          Epoch: 2000
Mag:       /            Size: 12'/11'           Type: III 1 p n/
                                                      IV 1 p
Observer: Jere Kahanpää                               (-40/-41)
Obs. place: Jyväskylä, Finland
Date/Time: 8./9.8.1996, 01.20

Telescope: N 205/1000
Magn: 80x               Filter:
Field: 37'              NE Lim.mag: 5.2m
Background sky: 4-5     Seeing: 3 
Weather: +10 °C, 1/3 Moon low E.   

Brightness: 2, 2        Alt:    
Description: 
DO 40 
         40x: faint, but obviously exists as a group. 80x: 15
stars mag 10...13. Own size 8'. The brightest stars are in a row
of 3 stars on the N edge + a lone one on the S side. 

DO41
         Not well defined like Do40. Two groups are visible near
the catalogue place. 
1) About 15 stars mag. 9..12 (most are faint) S and E of the
bright star in the center of the field. Size about 8'. 

2) the whole E side of the field. This area includes a chain of
bright (10m) stars which runs from the 1) area towards SE and
then turns towards N. The size of this group is 17' = much
bigger than the cat. size. At 40x this group stands out quite
well while 1) was not seen.

Berk 85 was looked for but not seen (place from Megastar). Maybe
group 1) is Berk 85 and 2) = Do41.