NGC 7331 Group
14. September 2020 - - Zimmerwald, Bern

16. September 2020
Processing:
- Stacking in Pixinsight: WeightedBatchPreprocessing
- RGBCurveAlign
- DynamicCrop
- DynamicBackgroundExtraction
- BackgroundNeutralization
- PhotometricColorCalibration
- Denoise: EZ Denoise Script
- HistogramTransformation
- Deconvolution
- CurvesTransformation
- Final adjustments in Lightroom
Subframe analysis:
- Median ADU starts with hight values, as it is still dusk and gets lower until 02:30 LT, where the moon rises over the horizon, resulting in a ascending Median ADU.
- SNR is clearly reciprocal to the Median ADU.
Plots
Exposure Time
- 190 x 120 s Gain 240 Color
∑ 6 h 20 min
Calibration
Center (RA, DEC) | 339.2460, 34.4222 |
Size | 0.593 × 0.383 deg |
Radius | 0.353 deg |
Avg. Distance to Moon | 118.13 deg |
Avg. Moon phase
14.19 %
14.19 %
Guiding
RMS (RA, DEC) | 0.76 ", 0.72 " |
RMS Total | 1.05 " |
Polar Alignment Error | 32.3 ' |