On the Shoreline of the Lagoon
09-Aug-2016
Next to the Lagoon Nebula, there lies the often overlooked collection of absorption, reflection and emission nebulae: NGC 6559, IC 1274, IC 1275, IC 4684, IC 4685, Barnard 303, LDN 227, LDN 213, and planetary nebula PN M 1-41.
With annotations:
Image:
- 34x 600s Luminance bin1x1 + 15 flat + 50x dark + 120x bias
- 12x 300s Red bin2x2 + 12 flat + 50x dark + 120x bias
- 10x 300s Green bin2x2 + 12 flat + 50x dark + 120x bias
- 8x 300s Blue bin2x2 + 12 flat + 50x dark + 120x bias
Total exposure 8 hours 10 minutes.
Hardware:
- Skywatcher Black Diamond ED120
- SkyWatcher EQ8 Pro Mount
- QSI 683-ws8 Camera @ -15°C
- Astronomik Typ 2c LRGB
- 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 3 nights, new 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, combine RGB.
- Photoshop CC: Merge Lum+Ha as luminance, curves, high pass filter, merge HaL+RGB, minimum filter, color adjustment, saturation.