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About rotatux

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    Star Forming

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  1. rotatux

    Imaging with the 130pds

    A very nice one. I think it *is* very red actually (and confirmed by my first try at it last year). But your stars are all white or reddish so it might be too red and need a bit of color rebalancing. Depending on the software you use, it may have the option to auto-calibrate colors based on known star colors (use it with high-depth image so ≥ 16-bit). Otherwise have a play with manual white balance, maybe after subtracting a bit of red channel.
  2. rotatux

    The "No EQ" DSO Challenge!

    @Manners2020 I find your Orion quite good. Comparing with unprocessed, I think you may have stripped too much of the background, hence loosing some details of the nebula you had captured. Now if this is a single sub, imagine what you will have with stacking several subs BTW what mount was your 102 lunt on ? Keep up trying, have good skies.
  3. Wow that zoom level combined with entire lunar field makes me feel like flying in Appolo ship in orbit around the moon while I keep zooming in and out Would be even better with color, but splendid already.
  4. rotatux

    The "No EQ" DSO Challenge!

    Hello smisy and welcome to the hobby For a beginner IMO you actually happen to start with one the most difficult configurations: long focal, high focal ratio, ridiculously small sensor, and ocular projection which magnifies again the already long focal... and of couse Alt-Az mount. So getting any images is an achievement it itself, and yours are quite decent. Good luck and skies ! PS: your M42 looks mirrored left-right to me :-P
  5. rotatux

    The EQ3 DSO Challenge

    Your rig seems to have great potential : at first I thought "both overexposed and not stretched enough in the darks" then I reread "220s single at 400iso". Nearly 4 minutes is a great result for a wedged Alt-Az tracking, as I can't see any obvious bad tracking artefacts in your image. That leaves you with plenty room for improvement, both for capture such as stacking many shorter exp + higher iso subs, and for processing such as non-linear stretching or black point management or color balancing. Good luck ! BTW, I find your setup is pretty unusual for A.P. -> is it a DIY wedge ? would you post some images of it somewhere ?
  6. Nice star colors... just wondering whether there's more depth to it : what exposure (sub length and number, iso, focal and aperture) was that ?
  7. rotatux

    Imaging with the 130pds

    Your colors are lovely, especially the nebula. If I was picky I would say too strongly blue stars and missing gradation in red/orange stars, but the subject is the nebula and it has IMO nice red-orange-grey-blue variations so nothing to complain Wish I had an occasion to get that one but weather decided otherwise and it's now probably off for me til next year.
  8. rotatux

    The Little Dumbell

    I prefer the full-FoV version too, as I like to see objects in context (and still possible to zoom in the full-res image). Nice color and shape details in the nebula.
  9. This shows low or no aberrations => is it the full FoV or cropped ? (I would opt for the latter since that's the FoV I have with a 135 on my MFT sensor...) That 135 looks nice however, which one is it exactly and what aperture ratio did you set for capture ?
  10. rotatux


    Yes but part of the story: this one only handles monochrome gamma and black/white points of the display. You have to use something that will let you calibrate colors also. Searching "color gamma calibration images" gives things such as http://www.covingtoninnovations.com/DSLR/cal/MonitorCal.gif or http://www.normankoren.com/GammaRGB.jpg or http://www.ballisticpublishing.com/call_for_entries/colour_calibrate_gama2_2.jpg That's typically what I use to grossly calibrate my displays (that is, unless the display is definitely reluctant to displaying correct colors, such as mine at work).
  11. rotatux


    I can see the presumed blue stars as white... Maybe red pushed a bit too long masks blue ? On my recent 1st try at this target I refrained from saturating colors too much, and I got stars less red and more blue-white (on my own mostly-color-calibrated viewing devices)
  12. rotatux

    The "No EQ" DSO Challenge!

    M38, the Starfish cluster, and its nice little friend NGC1907. Which is the full size for image posted in my gallery here:
  13. rotatux

    Orion and Running Man

    Hello, looks good but sad it's a PNG, far too heavy to view full size here...
  14. Nice colors... highlights interesting features and chemical composition. Brown a bit too high for me, but that's personnal taste. PS: image seems switched L-R with reality if i'm correct

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