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MarsG76 last won the day on December 11 2019

MarsG76 had the most liked content!

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4,506 Excellent


About MarsG76

  • Rank
    Main Sequence

Profile Information

  • Gender
  • Interests
    Astronomy... Observing and Imaging.
    Gym, Down to Earth Video and Photography.
    Tinkering with, modding and engineering electronic devices.
  • Location
    Sydney, Australia
  1. Great write up of you adventures to an old "stomping ground"... and a great result for a first after such a long break.
  2. Very nice looking piece of gear....
  3. I think that your crescent looks fine.. but to adjust colors, try creating a mono luminance layer over a slightly defocused (gaussian blurred) color data, and adjust the color data either in color balance or hue adjustment....
  4. Perhaps a bit more cropped in looks a bit better in the frame...
  5. MarsG76

    Deep Sky Imaging

    Collection of my Deep Space objects. These images have been take through a 8" SCT or 80mm refractor using a full spectrum modded Canon 40D (as stated in the description of each photo).
  6. Hello all, Sharing with you my quickie exposure... The Trifid nebula, aka M20 or NGC 6514, a popular and bright nebula about 4300 light years away in the constellation Sagittarius. I had no plans for another object after imaging the "War and Peace" nebula and I didn't want to waste a clear night, so I pointed the scope at M20 and started exposing. This image was taken through my Celestron 8" SCT on the CGEM at f6.3 using a cooled and astro-modded DSLR. Exposures: RGB subs: 6x60s, 5x120s, 5x180s, 5x240s, 4x300s HII subs: 10x600s OIII subs: 9x600s Total Time: 04hr 21min. Most of this image is natural color because I only used 10% of the HII and OIII stack to emphesize the detail in the red and blue hues. Clear Skies, MG
  7. It almost looks like a photographic negative, but I think that the pale look is almost fitting for something called "War & Peace"...
  8. Hi Astronomers, Sharing with you my latest image of NGC 6357 in the constellation Scorpius near the better known NGC 6334, AKA the "Cat's Paw" or "Bear Paw" nebula. This nebula was also given the name War and Peace Nebula because of its appearance in infrared images, the bright western part resembles a dove and the eastern part looks like a skull. This photo was taken through my Celestron 8" SCT at f6.3 (1280mm focal length), tracked on a CGEM and exposed using my full spectrum modded and cooled Canon 40D DSLR. This image was a bit of an experiment to see how much improvement in noise and sensitivity will be in my long exposed subs after I redesigned the cooling system on my DSLR.. now the sensor temperature was kept at freezing point. When uncooled the sensor temperature was around 27°-32°C and the first version of the cooling system only cooled and kept the sensor temperature at +/- 1°C of ambience... now with the redesigned cooler, I had the temperature drop to -5°C (from 18°C ambient temp) during test and set the controller to stop cooling at 0°C and start cooling at 1°C when imaging this object. The improvement in subs was substantial, 1800 second ISO1600 subs had almost no noise, only few pure white single pixels of noise within the subs, easily removed with single pixel noise reduction, so I'm more than happy with how my 40D is cooled and the subs it's delivering. This image consists of only my SII and HAlpha subs so it is still a work in progress as I still need to expose the OIII subs to add to the SII and HAlpha frames. The was I assembled the channels was by using the red channel in SII as RED, red channel in HAlpha as GREEN and a added combination of the faint signal captured in both blue channels of SII and HAlpha (Hbeta signal) as BLUE. Clear Skies, MG
  9. Thank you, I'm looking forward to seeing it, please tag me when you post it.
  10. excellent 1st DSO... runs rings all over my first DSO....
  11. Thank you.. I find it hard to get the crispness I'm after when imaging at this scale.. 1280mm (or 2032mm) focal length need impeccable seeing and atmospheric stillness to get crisp subs.... the best guiding accuracy that I have ever seen on my mount was 0.38" but this image was around the 1" mark...
  12. Great result.. personally I like the more saturated image....
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