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MarsG76

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Everything posted by MarsG76

  1. MarsG76
    Good review... although I don't think it's necessary for (at least) iPhones with iOS 9/10/11 where the light level can be changed to a very low level and in iOS 10/11 the hue can be changed to pure mono red with limited white peaks. Literally makes the screen not visible in any day light and barely visible at night.
  2. MarsG76
    To me it looks like peak level clipping... definitely post processing issue.
  3. MarsG76

    G'damn clouds... Come on the Australian famous drought where it's hot and not a cloud in the sky for months on end...

  4. MarsG76
    Nice, thanks
  5. MarsG76

    IC434 Nov2017

    MarsG76 posted a gallery image in Member's Album

    IC434 Nov2017

    From the album: Deep Sky Imaging

    This has been imaged through the NexStar 8SE on the CGEM mount. This was imaged in the native 2032mm focal length (F10) through a Baader UV/IR Cut and Halpha 7nm filters and recorded by my modded Canon 40D DSLR. I experimented with trying to capture some UV data through the Astrodon UV filter but it was a failure on the horsehead... I talked about it in another post, but I think that stacking the UV data into the rest pulled the stars back to white from the redness caused by the HAlpha data. I used PHD 2.6.4 to Autoguide for the first time and I have to say that I like PHD 2 a lot, highly recommended... it is very good, my guiding accuracy (according to PHD2) was between 0.5" and 0.8" arc sec... I found it easy to get to grips with. Total data amount was 81 subs, 75 used in this image... HII: 29 x 15 minute ISO1600 RGB: 13 x 10 minute and 25 x 5 minute ISO800 UV: 8 x 20 minute ISO3200 So total time spent on integration was 850 minutes

    © Mariusz Goralski

  6. MarsG76

    IC434 Nov2017 Crop

    MarsG76 posted a gallery image in Member's Album

    IC434 Nov2017 Crop

    From the album: Deep Sky Imaging

    This is a cropped image of the other Horsehead image which I imaged through the NexStar 8SE on the CGEM mount in the native 2032mm focal length and recorded by my modded Canon 40D DSLR. Total data amount was 75 used in this image... HII: 29 x 15 minute ISO1600 RGB: 13 x 10 minute and 25 x 5 minute ISO800 UV: 8 x 20 minute ISO3200 So total time spent on integration was 850 minutes

    © Mariusz Goralski

  7. MarsG76
    Oh BTW, I love the build up description to seeing the horsey...
  8. MarsG76
    Well done, talk about luck.... the one thing I crave to see live, and with a 12", makes me want to get out with my 14 right now..... Congrats.... and PS, I get it....
  9. MarsG76
    Makes me want to pull out my collection, what will bring back some child hood memories.....
  10. MarsG76
    Phoaaa... A Library ... thats a astronomical collection....
  11. MarsG76
    Yes!!! Exactly my assumption
  12. MarsG76
    Without putting pen to paper to verify my theory, I think that even though the telescope flips 180 degrees the scope is on the other side of the RA rotational center and with the DEC having to tilt up to recenter the object, you'll find that the RA bar flip is not exactly 180 degrees with DEC compensating to center the object. Think of your finger at arms length and looking at it with alternating eyes, ignoring the fact that one of your eyes would be upside down.. When you alternate your eyes the finger shifts, and the amount you need to pan your head to bring the finger back into the same spot in reference to what's behind it is the angle shift in a meridian flip. Of course the angle of the camera and a spherical sky creates a tilted angle that's more than a angle tilt that is left to right.
  13. MarsG76
    Pillars Of Creation Re-Created
    Thank you...
  14. MarsG76
    M74 Galaxy September 2017

    From the album: Deep Sky Imaging

    This is a 7 hour exposure of the M74 galaxy using a astro full specturm modded Canon 40D DSLR through a IR Cut filter. The image is taken with a Celestron 8" SCT at F6.3 through a focal reducer(1280mm focal length). The image consists of mostly 450s subs and approximately 1 hours of 120s subs, all at ISO 800. This galaxy is located at about 30 Million Light years distance from us, at for a magnitude 10 object it did seem like quite a faint object to image, this could be due to the it's low altitude throughout the whole exposure and a little bit of city light pollution in that part of the sky.
  15. MarsG76
    NGC1055 Galaxy - Oct 2017

    From the album: Deep Sky Imaging

    This is a 10 hour exposure of the NGC1055 galaxy using a standard Canon DSLR. The image is taken with a Celestron 8" SCT at F10 (2032mm focal length). The image consists of mostly 600s subs and approximately 2 hours of 90-150s subs, all at ISO 800. This galaxy is located at about 60 Million Light years distance from us, and at a magnitude of 12.5 is quite a faint object to image, especially when there is a little bit of light pollution with in the par of the sky it is imaged at... Looking at the result, I probably should have used the f6.3 FR to have less over sampling and most likely capturing more light in the same amount of time, or same amount in less time... end result most probably, at worst, would have been the same if not very similar and at best there might have been a bit more detail captured since guiding at 63% of the focal length and not oversamplig the subs would not be as susceptible to seeing/star fluctuations/movement.
  16. MarsG76
    The one and only eclipse that I have seen was in Cairns, so I basically flew up the day before, slept in the rental car and the following morning setup for the eclipse before it happened... that was my budget procedure.... that made it more financially viable since it was in the same country and not too far away from home... that said tho.. it is a event that is worth spending some extras money on... There will be a eclipse in Sydney in July 2028... so if you can't get accommodation or tickets for the 2019/2020 eclipse, perhaps plan for the Sydney event.
  17. MarsG76

    Only 150 days left untill a major astronomical event for my wife and myself. 

    1. xtreemchaos

      xtreemchaos

      congrats mate, the pita pater of tiny feet I take. charl.

    2. MarsG76

      MarsG76

      Spot on... a brand new astronomer... 

      Thank you.

       

  18. MarsG76
    Thats exactly what it is, it's too far back from the focuser....
  19. MarsG76
    The image of Andromeda looks awesome... the split diffraction spikes are very strange indeed... Obviously it is caused by the spider vines. First thing I would do is check to make sure then they're all flat toward the mirror and not twisting at all... any twist will refract light in a strange unpredictable way, especially in long exposures.
  20. MarsG76
    Nice and compact... looks great.
  21. MarsG76
    So... are you going on a holiday any time soon? ;-) ha ha joking...
  22. MarsG76
    Major security breach... astronomy forums are great for thieves to go target hunting... we all love to show off, not just, our photos, experiences at the eye piece but also our hard worked for gear we acquired over time... all a thief needs to do is wait for a slip up where they get a few gps coords, note down few user profile names and wait until a user posts something like "I'm going to the south of France for a week to some dark skies. I can't take my proper Astro gear due to weight restrictions so I can only take my portable..." and JACKPOT... user darkmatter at coords 48.0673299 12.8633177 is giving me a week to harvest his gear for my addiction hit.. the user comes back from his France holiday to keep repeating the coords location name...
  23. MarsG76
    Precisely.... Another option is to connect a 20kV high volt transformer output to the handle... please allow the intruder to complete that circuit... ;-)
  24. MarsG76
    My tip is, don't post pictures of your obsy with down to the arc second gps coordinates displayed somewhere in the photo...
  25. MarsG76
    10%!!!! Sagittarius is just greedy, seems like a disproportionate amount of M objects for it's self....
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