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 -13C
Optic configuration of the telescope:
fractor Skywatcher 120-900 mm. ED PRO + focal reducer Meade f 6,3
( focal equivalent and inclusive draught 630 mm.)
frammed field 58 x 43 arc minutes
German Equatorial Mount:
Gemini G 41 Observatory Plus and FS 2 system control
Luminance integration time:
22 frame from 600" each with  filter Astronomik H-alfa (13 nm)
Integration color time:
R 11x600" G 5x600" B 3x600"
Software used for the acquisition and the elaboration:
CCDSoft, Photoshop CS, Astroart,
Date of acquisition: 2006
Zone of acquisition:
Fixed posting of San Giuliano P.no ( Piacenza ) Italy
Author Astroimager:
Davide Romanini


Name: NGC 6888
Popular name: Crescent Nebula
Type of object: Nebula or suspect Planetary Nebula
Magnitude: 10.0
Apparent size: 20.0'x10.0'

Position (epoch of date)
Right ascension: 20h 12m 22s
Declination: +38 22' 40"
Constellation: Cygnus


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