BEHIND THE IMAGE
Notes from the session
This image is a narrowband presentation of hydrogen, sulfur and oxygen emission lines, mapped to red, yellow and blue respectively.
Image:
14x 600s 6nm H-alpha + 12 flat + 50x dark + 120x bias
11x 600s 6nm SII + 12 flat + 50x dark + 120x bias
13x 600s 6nm OIII + 15 flat + 50x dark + 120x bias
Total exposure 6 hours 20 minutes.
Hardware:
Skywatcher Black Diamond ED120
SkyWatcher EQ8 Pro Mount
QSI 683-ws Camera @ -15°C
Astronomik 6nm Ha, 6nm SII, 6nm OIII filters
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II
Location:
Orange zone in Brisbane, Australia. (Bortle 7)
Imaged over 2 nights, 50% moon.
Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusing
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution.
Photoshop CC: Reduce noise, high pass filter, levels, curves, color map, saturation.
Image:
14x 600s 6nm H-alpha + 12 flat + 50x dark + 120x bias
11x 600s 6nm SII + 12 flat + 50x dark + 120x bias
13x 600s 6nm OIII + 15 flat + 50x dark + 120x bias
Total exposure 6 hours 20 minutes.
Hardware:
Skywatcher Black Diamond ED120
SkyWatcher EQ8 Pro Mount
QSI 683-ws Camera @ -15°C
Astronomik 6nm Ha, 6nm SII, 6nm OIII filters
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II
Location:
Orange zone in Brisbane, Australia. (Bortle 7)
Imaged over 2 nights, 50% moon.
Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusing
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution.
Photoshop CC: Reduce noise, high pass filter, levels, curves, color map, saturation.