BEHIND THE IMAGE
Notes from the session
Image:
18x 900s 6nm H-alpha bin2x2 + 20 flat + 50x dark + 120x bias
26x 510s 12nm SII bin2x2 + 12 flat + 50x dark + 120x bias
22x 480s 12nm OII bin2x2 + 25 flat + 50x dark + 120x bias
25x 48s Red bin3x3 + 15 flat + 50x dark + 120x bias
21x 48s Green bin3x3 + 15 flat + 50x dark + 120x bias
26x 48s Blue bin3x3 + 15 flat + 50x dark + 120x bias
Total exposure 12 hours 5 minutes.
Hardware:
Celestron EdgeHD 1100
SkyWatcher EQ8 Pro Mount
Celestron 0.7x EdgeHD focal reducer
QSI 683-ws Camera @ -15°C
Astronomik Typ 2c RGB filters, 6nm Ha, 12nm SII, 12nm OIII
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Xpress Adaptive Optics
Starlight Instruments Focus Boss II
Location:
Green zone in Brisbane, Australia. (Bortle 7)
Imaged over 4 nights.
Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusser
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution.
Photoshop CC: Reduce noise, high pass filter, minimum filter, shadows/highlights, levels, curves, combine HSO as RGB, superimpose RGB stars using Ha as lumininosity channel.
Bonus:
Compare this new image to one I took almost a year ago of the same object to see my progress:
18x 900s 6nm H-alpha bin2x2 + 20 flat + 50x dark + 120x bias
26x 510s 12nm SII bin2x2 + 12 flat + 50x dark + 120x bias
22x 480s 12nm OII bin2x2 + 25 flat + 50x dark + 120x bias
25x 48s Red bin3x3 + 15 flat + 50x dark + 120x bias
21x 48s Green bin3x3 + 15 flat + 50x dark + 120x bias
26x 48s Blue bin3x3 + 15 flat + 50x dark + 120x bias
Total exposure 12 hours 5 minutes.
Hardware:
Celestron EdgeHD 1100
SkyWatcher EQ8 Pro Mount
Celestron 0.7x EdgeHD focal reducer
QSI 683-ws Camera @ -15°C
Astronomik Typ 2c RGB filters, 6nm Ha, 12nm SII, 12nm OIII
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Xpress Adaptive Optics
Starlight Instruments Focus Boss II
Location:
Green zone in Brisbane, Australia. (Bortle 7)
Imaged over 4 nights.
Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusser
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution.
Photoshop CC: Reduce noise, high pass filter, minimum filter, shadows/highlights, levels, curves, combine HSO as RGB, superimpose RGB stars using Ha as lumininosity channel.
Bonus:
Compare this new image to one I took almost a year ago of the same object to see my progress: