Log Book Entry No.6
Created: 31 Aug 2013 21:23:58 |
Last Revised: 05 Sep 2013 10:53:06 |
PedroPaiva |
Focus and Filters |
Average filter wavelength
- Blue: 450mm
- Green: 550mm
- Red: 650mm
ST-8ME Quantum Efficiency:
- Blue: 55%
- 1.82x exposure from clear
- 60s clear -> 109s
- Green: 70%
- 1.43x exposure from clear
- 60s clear -> 86s
- Red: 75%
- 1.33x exposure from clear
- 60s clear -> 80s
Test Images
M57 - Ring Nebula
M56 - Globular Cluster
M27 - Dumbbell Nebula
- 9x60s Luminance images stacked to form a 6x60s image
- 1x109s Blue image
- 1x86s + 2x60s Green images
- 1x86s + 5x60s Red images
During the Dumbbell Nebula imaging the filters were accidentally changed due to the mouse scroll.
- Possible workarounds:
- Use autosave function to take images
- Check before taking a new single image
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