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MarsG76

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Everything posted by MarsG76

  1. MarsG76
    Which ever eyepiece focal length you decide on, have a look at the televue eyepieces... the 31mm Nagler Type-5 is a nice wide EP and the 11mm Nagler Type 6 is more close up but are 82° FOV and the Ethos 17mm is 100° FOV, so eventhough it magnifies more, you still have the wide view, just that the object is bigger.. actually you can't see the edges on that EP unless you really try and look for it... these eyepiece along with a 2" Powermate are what I use 99% of the time and nothing else (in my arsenal o'oculars) comes close to the views delivered by my Televue kit.... They're a bit more expensive but IMO they're worth it.
  2. MarsG76
    Thank you for the kind comments everyone.
  3. MarsG76
    Jupiter, Ganymede & Callisto - 17 July 2020@1556UTC

    From the album: Solar System Objects

    Jupiter with two of its moons, Ganymede and Callisto, imaged with a Skyris 618C CCD through a 8" SCT at f33.

    © Mariusz Goralski

  4. MarsG76
    Hello Just sharing my latest Jupiter image.... Jupiter with two of its moons, Ganymede and Callisto, imaged with a Skyris 618C CCD through a 8" SCT at f33. Jupiter imaged taken on 17 July 2020 @ 15:56UTC. CS, MG
  5. MarsG76
    Hello All, sharing with you my latest complete image, the War and Peace Nebula, NGC6357. NGC 6357 is about 5500 light years away 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 a Celestron C8 8" SCT at f6.3 (1280mm focal length), tracked on the CGEM and exposed using a full spectrum modded and cooled Canon 40D DSLR. Total exposure time through the SII, HAlpha and OIII filters was 40 hours. Clear Skies MG
  6. MarsG76
    OK, I played with Starnet ++ and it definitely has potential. Definitely a tool I'll be using in the future, especially with capturing and adding RGB color stars to my Narrowband imaging. It very easy to control the intensity and color of stars and now, thanks to your tip, I can process stars and nebulosity/DSO separately. Attached is my result after a quick play after work. I tried to not be too rough with the stars but they do look more "delicate" IMHO. Thanks Olly.
  7. MarsG76
    Thank for the tip... I'll give Starnet++ a go... perhaps thats my next step in AP, star bloat control.
  8. MarsG76
    M17 f6.3 26 Jun - 2 Jul 2020 - HOO

    From the album: Deep Sky Astrophotography

    My latest rendition of the Swan/Omega Nebula - M17, imaged for 15 hours & 43 minutes during multiple nights between 26 June and 2 July 2020. This was imaged through SII, HAlpha and OIII filters using my Celestron C8 8" SCT @ f6.3 with the astromodded and cooled Canon 40D DSLR, tracked on a CGEM. This image is combined using the same data as the other except this one is in HOO style to emulate natural color using the narrowband data.

    © Mariusz Goralski

  9. MarsG76
    M17 f6.3 26 Jun - 2 Jul 2020 - SHO

    From the album: Deep Sky Astrophotography

    My latest rendition of the Swan/Omega Nebula - M17, imaged for 15 hours & 43 minutes during multiple nights between 26 June and 2 July 2020. This was imaged through SII, HAlpha and OIII filters using my Celestron C8 8" SCT @ f6.3 with the astromodded and cooled Canon 40D DSLR, tracked on a CGEM. This image is combined using the same data as the other except this one is SHO, Hubble Palette, style.

    © Mariusz Goralski

  10. MarsG76
    Hello astronomers, Sharing with you all my latest rendition of the Swan/Omega Nebula - M17, imaged for 15 hours & 43 minutes during multiple nights between 26 June and 2 July 2020. This was imaged through SII, HAlpha and OIII filters using my Celestron C8 8" SCT @ f6.3 with the astromodded and cooled Canon 40D DSLR, all riding on a CGEM. These images are combined using the same data except one is SHO, Hubble Palette, style and the other is HOO to emulate natural color using the narrowband data. Clear Skies, MG
  11. MarsG76
    fantastic.. hopefully it'll still be visible toward the end of july when we can see it down here.
  12. MarsG76
    That is very awesome.. a permanent setup is a very comfortable way do do a lot more astronomy....
  13. MarsG76
    Great write up of you adventures to an old "stomping ground"... and a great result for a first after such a long break.
  14. MarsG76
    Very nice looking piece of gear....
  15. MarsG76
    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....
  16. MarsG76
    Perhaps a bit more cropped in looks a bit better in the frame...
  17. MarsG76
    M20 H2RGBO3 F6.3 - 23 June 2020

    From the album: Deep Sky Astrophotography

    The Trifid nebula, aka M20 or NGC 6514, a popular and bright nebula about 4300 light years away in the constellation Sagittarius. 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.

    © Mariusz Goralski

  18. MarsG76
    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
  19. MarsG76
    It almost looks like a photographic negative, but I think that the pale look is almost fitting for something called "War & Peace"...
  20. MarsG76
    NGC6357 SIIHaHb F6.3 24May-15Jun 2020

    From the album: Deep Sky Astrophotography

    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.

    © Mariusz Goralski

  21. MarsG76
    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
  22. MarsG76
    Thank you, I'm looking forward to seeing it, please tag me when you post it.
  23. MarsG76
    Thank you for the kind comments.
  24. MarsG76
    excellent 1st DSO... runs rings all over my first DSO....
  25. MarsG76
    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...
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