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About wxsatuser

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    Blue Straggler
  • Birthday 05/04/55

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    Weather satellites
    Gscale trains
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    West Sussex

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  1. Had a little try with your data. There is still some walking noise but you captured quite a bit.
  2. The ISO of flats is not critical nor is the temperature but DSS does complain if they are not the same. In fact use a low ISO for best SNR. If you use flat darks they must match the ISO and temperature of the flats.
  3. Might be a good idea to find the source of drift, PA or flexure and try to eliminate it. How often are the Lacerta guiding lights on, do they flash rapidily or very little? Whats the Lacerta guide graph look like?
  4. That's surprising, would have thought it would help.
  5. You will be ok, your previous stuff has been very good, don't see why it should'nt continue. As to those senile moments, have had a few myself recently, part of the learning curve. Been thinking along the same lines with the Samyang but need a second camera as well. It's a mad game this AP.
  6. Looks good to me. The dual rig should do really well.
  7. Another amazing image Paddy. Hope Spain goes well.
  8. You could fix your drift, sort out PA or flexure if you have it. The Lacerta dithers, surprised you don't use it, as it's fairly straight forward.
  9. As expected, it's almost the same as DSW's attempt a while back, although mine needs a lot more data, I'm looking at getting matching Astrodons for the other narrow bands, but I promised myself I would cull other gear first, otherwise I will never make the effort
  10. That's a big step and made all the difference. As Oddsocks points out, use RAW, it's no harder to process in DSS, they may look grey but William posted how to deal with that.
  11. This is from your other topic. The streaks are not present in the lights OR flat - no matter how I stretch or fiddle with them to try and bring the streaks out. Stack with no darks and no flat - streaks do not show. Stack with darks and flat - streaks show. Stack with no darks and only flat - streaks show. Stack with only darks and no flat - streaks do not show. Stack with only flat - streaks show. The give away here is the flat but your still missing the point, it's one flat. You will be adding noise with one flat, period. This is why we stack several images of each individual calibration frames. The streaking is noise and not part of scene and you have'nt found a fundimental flaw in the stacking procedure. BTW There is something fundimentally wrong with the files you posted, they will not open in PS CC or PI
  12. Hi from across the Downs in Steyning.
  13. Excellent Barry, I like the detail in the Ha and the processing.
  14. You really ought to have more than one flat. Everything about stacking is reducing noise, this means plenty of subs, thats lights, darks, flats and bias. Get at least 20 frames or more of each calibration file, make sure the darks match the temperature of the lights. You cannot remove the drift after the fact, to get rid of drift you will need a better PA, drift align if possible.
  15. Cannot see images. Was looking at Albireo Sunday night, had the 20x70 bins on it. Lovely sight with the yellowish main star and it's obvious bluish companion.