Technical data of acquisition

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Basic object information

CCD Acquisition: Starlight Xpress SXV-H9 
CCD Autoguide
: SBIG ST 7 XME 402 E
Temperature of exercise -10C
Optic configuration of the telescope:
R.C. Meade LX 200R 8" + focal reducer Meade f 6,3
( focal equivalent  1200 mm.)
frammed field 24 x 18 arc minutes
German Equatorial Mount:
Gemini G 41 Observatory Plus and FS 2 system control
total time for the integration of luminance:
 160' with  filter Astronomik CLS Profi
Integration color time:
R 50' G 40' B 50'
Software used for the acquisition and the elaboration:
CCDSoft, Photoshop CS, Astroart,
Date of acquisition: May 2007
Zone of acquisition:
Fixed posting of San Giuliano P.no ( Piacenza ) Italy
Author Astroimager:
Davide Romanini


Name: M 51
Popular name: Whirlpool Galaxy
Type of object: Galaxy
Magnitude: 8.9
Surface brightness: 12.5 mag/sq arcmin
Apparent size: 10.8'x6.6'
Position angle: 163

Position (epoch of date)
Right ascension: 13h 30m 13s
Declination: +47 9' 31"
Constellation: Canes Venatici


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