Andromeda Galaxy OSC with H-Alpha Layer
I just reprocessed my November-Data in PixInsight. In November, I collected photons of M31 at two evenings. At one evening i collected RGB with my DSLR OSC and on the second i used my Duo-Narrowband-Filter, just to see if it works. Now i reprocessed Andromeda Galaxy OSC with H-Alpha Layer in PixInsight.
I process the data before in Affinity Photo, but without using the HA-data.
Meanwhile i use PixInsight for processing my data. Therefore i started to use my unprocessed data. It is really nice, that there are several really nice tutorials out there for literally everything in PixInsight.
Lessons Learned
A photo of a galaxie with a DSRL OSC with H-Alpha-Layer works pretty well, using the right software and the right tutorial.
The processing in Pixinsight is no witchcraft. But what i saw really fast, is that my 23 duo-narrowband-photos with 180s each at 7.5 is really not enough H-Alpha Data of M31. Yes, i collected photons, but the noise is something i had to handle while doing the processing. But since i had data, i wanted to use them and see whats possible.
The first steps in PixInsight were the WeightedBatchProcessing Script. I ran it two times. 1st time to get 3 Master-Files for the RGB-stack and the 2nd time with the data of the duo-narrowband-evening. This second stack holds the HA-Data in the Red-Channel.
I used the Tutorial of “Entering into Space”: (60) How to Imaging and Process M31 In Ha LRGB – YouTube
High resolution on Flickr:
Session details
| Telescope | VIXEN ED80sf |
|---|---|
| Corrector | TSFlat2 |
| Effective focal length | 600 mm |
| Camera | Canon EOS M100(a) |
| Filters | Optolong L-Extreme |
| Mount | Skywatcher HEQ5 Pro |
| Guiding equipment | TS-Optics 50 |
| Guiding camera | Omegon 1200b |
| Date of capture | 2021-11-24 |
| Exposure (lights) | Ha, OIII: 23 × 180 s |
| Also contains data from | Andromeda Galaxy with the ED80sf – November 2021 |
| Reused from it | 31 × 180 s |
| Total integration | 1 h 9 min |
| Total integration (incl. reused data) | 2 h 42 min |
| Calibration frames | FLATS, BIAS |
| Sensitivity | ISO 800 |
| Processing date | 2022-03-19 |
| Software stack | PixInsight, Affinity Photo |
| Location | Koblenz, Rheinland |
| Focal ratio | f/7,5 |
| Image scale | 1,28 ″/px |
| Field of view | 128,0 × 85,3 ′ |
