I had several problems in those 3 nights when i took the photos. my main problem was a drift caused by bad guiding scope alignment.
I tried later to process the old data with Affinity Photo. Crap Data stays crap data:
3 Evenings of clear sky and a long way to go!
But most problems could be solved post processing with PixInsight.
My fist post processing results came very quick and lead to my v 1.0:
At a closer look, i sow some ugly artifacts. Ugly Noise. My solution was to use the CANON Banding Reduction in every single light subframe and in the flat frames using Process Container and Image Container in PixInsight. The quality increase was huge:
I had another problem beside the CB: Ugly stripes. Should also be a result of the drift problem. I tried to fix it using the Cosmetic Correction in PixInsight. Think its called Walking Noise Pattern.
Therefor i started working again on my post process using PixInsight.
Lessons Learnd:
- Calibration in PHD2 helps a lot and improves guiding 🙂
- I should not play around with my guide scope without optimizing the field of view of the guide scope and the main scope after re-attaching it.
- PixInsight does not bring magic into play, but i could at least rescue my results and made me happy.
- Full Moon nights are there to photography the Full Moon!
3 Years later
3 years later I have a workflow that worked even on this material.
High resolution on Flickr:
Session details
| Telescope | VIXEN ED80sf |
|---|---|
| Effective focal length | 600 mm |
| Camera | Canon EOS M100 |
| Mount | Skywatcher HEQ5 Pro |
| Guiding equipment | TS-Optics 50 |
| Guiding camera | Omegon 1200b |
| Date of capture | 2021-03-29 2021-03-30 2021-03-31 |
| Nights | 3 |
| Exposure (lights) | 110 × 180 s |
| Total integration | 5 h 30 min |
| Calibration frames | FLATS, DARKS, BIAS |
| Sensitivity | ISO 400 |
| Capture setup | Windows, Cartes du Ciel, PHD2, iOS, CC&C |
| Processing | 2021-04-01 – Affinity Photo |
| Reprocessing | 2023-12-22 – PixInsight, Affinity Photo |
| Location | Koblenz |
| Focal ratio | f/7,5 |
| Image scale | 1,28 ″/px |
| Field of view | 128,0 × 85,3 ′ |
