Pictures > Galaxies > NGC891 - Galaxy from side view

Le 24/07/2014 at Thézac (dept. 17, France)

Guiding: C8 at F=2000mm camera LodeStar, PHDGuiding
Telescope: Orion 80ED refractor F=600mm,
Mount: SkyWatcher EQ6
Imager: Atik 314L+ at -9,5°C
Moon: no moon
Conditions: calm, 19°C
Exposures: L:10x120s R:5x120s G:5x120s B:5x120s
Binning: L:bin1, RGB:bin2
Offsets: 15x0,001s in bin1 and bin2
Darks: 11x120s in bin1, 11x120s in bin2
flatl:11x0.03s
flatr:11x0.35s
flatv:11x0.024s
flatb:11x0.015s
Processing: IRIS then GIMP.
Commentary: not enough exposures, and difficult to merge colours.




Le 17/08/2012 at Thézac (dept. 17, France)

Telescope: C8 at F=1260mm
Guiding: Orion 80ED refractor at F=1200mm, LodeStar StarLightXpress, PHD Guiding
Mount: SkyWatcher EQ6
Imager: Atik 314L+ at -10°C
Moon: no moon
Conditions: calm, 20°C
Exposures: L:14x120s R:3x120s G:4x120s B:3x120s
Binning: L:bin1 RGB:bin2
Offsets: 15x0.001s
Darks: 3x120s
Flat L:15x0,02s
Flat R:15x0,4s
Flat G:15x0,03s
Flat B:15x0,01s
Processing: IRIS + deconvolution of stars, then GIMP : tresholds.
Commentary: difficult processing. I should make the focus for each filter next time.




Le 08/08/2010 at Thézac (dept. 17, France)

Telescope: C8 at F=1260mm
Mount: Orion 80ED refractor + CCD LodeStar StarLight XPress
Imager: Atik 314L+ at 2°C, binning 1x1
Conditions: no moon, no clouds, but quite a lot of humidity. 12°C.
Exposures: L : 2x180s R : 2x180s G : 2x180s B : 2x180s
IRIS processing: for each layer registration and addition, then combining colours.
GIMP processing: level of black