Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Our Beautiful Universe - Photos and Videos

  1. Nov 14, 2016 #201

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    The Pleiades are visible from my yard this time of year:

    1h_17m_nbRGB_zps7wsttczw.jpg
     
  2. Nov 17, 2016 #202

    DennisN

    User Avatar
    Gold Member
    2017 Award

    Earth as seen from Mars
    (image resized by me to fit forum thread width)
    "This view of the twilight sky and Martian horizon taken by NASA's Curiosity Mars rover includes Earth as the brightest point of light in the night sky. Earth is a little left of center in the image, and our moon is just below Earth."
    Source page: http://photojournal.jpl.nasa.gov/catalog/PIA17936
    30937036011_466a71bfdb_c.jpg
     
  3. Nov 24, 2016 #203
     
  4. Nov 29, 2016 #204

    DennisN

    User Avatar
    Gold Member
    2017 Award

    A clever and unusual edit of a timelapse (with fixed stars in the clip):

    Time Lapse Sky Shows Earth Rotating Instead of Stars


    This is the original clip:
    VLT (Very Large Telescope) HD Timelapse Footage
     
  5. Nov 29, 2016 #205
    Wow! what a cool perspective. Thanks. :smile:
     
  6. Dec 9, 2016 #206
  7. Dec 22, 2016 #207
    This seems appropriate as we pass another Solstice, a lot of work went into this clip, I really enjoyed the perspective it gives. :thumbup:
     
  8. Dec 29, 2016 #208
    A "beautiful" megamaser, compliments of Hubble. megamaser.jpg
     
  9. Jan 4, 2017 #209
    I always thought I understood Lunar phases, these clips changed that thought, very cool. :thumbup:

     
  10. Jan 17, 2017 #210

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    A break in the clouds this past weekend; even though seeing was poor I could get decent images of the Orion nebula by stopping down my 400/2.8 to f/4:

    2x_24m_400mm_zpsnwuk8ljj.jpg

    Edit: better non uniformity correction....
     
    Last edited: Jan 17, 2017
  11. Jan 24, 2017 #211
  12. Jan 29, 2017 #212
    Last edited: Jan 30, 2017
  13. Feb 1, 2017 #213

    DennisN

    User Avatar
    Gold Member
    2017 Award

  14. Feb 1, 2017 #214
  15. Feb 1, 2017 #215

    DennisN

    User Avatar
    Gold Member
    2017 Award

    Amazing!
     
  16. Feb 14, 2017 #216

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    First clear night in a month or so- my first real attempt at the Horse Nebula (25m @ 400/2.8, ISO 1600)

    crop_ISO1600._zps6gk8psvc.jpg

    It's an emission nebula, so my camera response is poor. Even so, not bad for an hour spent in the cold....

    One thing I've learned, I'm better off imaging extended objects without the 2X tele; capturing images in DX mode (smaller files) and then stacking with 2X dither to get more magnification if I want.
     
  17. Feb 14, 2017 #217

    DennisN

    User Avatar
    Gold Member
    2017 Award

    Nice, @Andy Resnick! By the way, do you use any dedicated software for photostacking, and if so, which software, I wonder?
     
  18. Feb 14, 2017 #218

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    I use Deep Sky Stacker- it's free.....
     
  19. Feb 14, 2017 #219

    DennisN

    User Avatar
    Gold Member
    2017 Award

    Thanks, I will check it out! I don't do any advanced astrophotography (yet?), but I'd like to check out stacking software anyway for other types of photos (e.g. making macro/close-ups more sharp overall).
     
  20. Feb 15, 2017 #220

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    'Focus stacking' is a little different than 'astrophotography stacking'. For focus stacking, I use CombineZP (also free) It's a little tricky and I generally don't get 'awesome' results, but it's better than nothing. Let me know if you find something better....
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted