MetaGuide: NGC 6188 Ha/Oiii with ASI 1600-MM Cool; EdgeHD11 f/10, 0.28" per pixel
No processing other than levels and crop. Acquired and focused with SGP. Guided with OAG and MetaGuide.
Automatic focus by SGP at start and at approx 30 minute. Focus with Robofocus on the primary focuser.
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NGC 6188 bicolor Ha/Oiii at 0.28" per pixel
| Imaging Optics | Celestron EdgeHD 11 at f/10 |
| Mount | Celestron CGE-Pro |
| Guiding Software | MetaGuide with dithering from SGP |
| Guiding Mode | Off-axis guiding with Hutech OAG5 |
| Imaging Camera | ASI-1600mm-cool at -10C gain 100 offset 40 |
| Guiding Camera | QHY5liii-174 |
| Collimation | MetaGuide |
| Focus | SGP and RoboFocus on the primary focuser - no mirror locks used - nothing manual |
| Exposure Time | 38x5m Ha, 40x5m Oiii |
| Image Scale | 0.28" per pixel |
| Raw FWHM | Down to 1.2" in subs |
| Image Processing | Calibration, stack and color blend in custom software, then levels on photoshop. No other processing. |
| Colorization method | Ha 100% red and 30% faux HB in green and blue, then 2x boost of Oiii signal in G and B channels. Deterministic. |
| Image Acquisition | SGP |
| Other Software | PECTool, TheSkyX Pro for best guidestar selection with field of view indicator (FOVI) |
| Other Hardware | Pyxis OAG Rotator for best guidestar, Telegizmos 365 cover, Long usb cable to outside setup |
| Date | June 14-16, 2017 |
| Filter | Astrodon 3nm H-alpha and Oiii |
Single raw 5m Ha exposure showing 1.14" fwhm in Maxim