IC 5146


IC 5146 – Cocoon Nebula

 

Date /time:
17.10.2008 18:33 to 17.10.2008 19:44
18.10.2008 18:18 to 18.10.2008 19:32

Ambient conditions: 0°C, transparency 3/5, seeing 3/5, rising ¾ Moon, high clouds
Location: Trier, Germany

Equipment:
Telescope: C 8 with Alan Gee and JMI motor focuser
Mount: CGE, selfguided with ST-4000XCM
Camera: SBIG ST-4000XCM

Acquisition:
Software: CCDSoft V5
FOV, Image scale: 34.5 x 35.2 arcmin, 1.21 arcs/pixel
Sub-exposures: 80min (12 x 5min + 7 x 10min) lights at –30°C
27 x 5min + 16 x 10min dark frames
16 x 0.1s t-shirt light-box flats at –20°C
50 bias at –20°C for flats calibration

Processing:
Flats normalized in CCDSoft, calibration and stacking in Images Plus 3.0,
Stretch, curves and levels adjustments, noise reduction and final sharpening in CS3.

Comments:
Strong vigneting and light pollution. Flats did not match exactly the light frames. Considerable
Image processing to minimize gradients and achieve an acceptable image quality.



Download full size image:

Filename: nebulae/ic5146_2008-10-18_full.jpg
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Comments (1)
1 Tuesday, 27 September 2011 13:24
Giovanni Bernardi
Ciao Admilson,
come stai ???? Tutto bene ?
Finite le vacanze ?
Per me qui a Lainate (MI) tutto è tornato nella normalità fatto salvo la consueta ultima uscita stagionale per lo star-party della Valle D'Aosta dove sono riuscito a fare solo una "mezza" immagine (vedi mio blog ) causa meteo non proprio buono.
Tu piuttosto hai fatto altre riprese? Usi sempre il Deltagraph?
Ciao
Giovanni

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