So a few days ago I shot the Leo Triplet with my 102mm refractor and I simply can't get anything useful out of the stack. I can see the data there, but when I try to wipe the picture I can't get a clean image useful enough to continue processing. I've also tried different stacking techniques (about every possible combination) but I seem to get a lot of noise. The 1100D has a lot of weird processing to the RAW-files and I'm not sure as to how I should be pre-processing for 1100D to get the most out of my data.
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Tech specs:
- I live in a city with about 100K and I'm sadly facing the city when shooting. No direct light is hitting the scope though.
- Startravel 102mm f4.9 refractor, dew tube is not flocked
- Off-Axis Guider for guiding w/ PHD2
- Dithering is king, so of course I do it
- Shooting w/ Canon 1100D IR-cut removed
- No filters
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Stacking specs:
- As I wrote, I tried every possible combination of (11 useful) Lights, (11) Flats, (200) Bias, (11) Darks, (11) Dark Flats. They all suck with vertical noise, weird vignetting.
- Stacking with Nebulosity.
- My flats seemed to have been a bit off and it's not 100% perfectly aligned. Shot them right after, but inside the apartment.
- Lights are ISO 400 and 300sec.
- There's negative blooming on the brightest star.
- I also shot some shorter exposures to layer in the blown out segments.
Stack: 11x300s Lights only
Stack: 11x300s Lights and Flats
StacK: 11x300s Lights, Flats, Bias and Darks