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Our Beautiful Universe - Photos and Videos

  1. Jun 8, 2017 #251

    davenn

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    just off the frame a bit beyond the head of the arrow :smile:

    upload_2017-6-9_10-59-17.png
     
  2. Jun 9, 2017 #252

    DennisN

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    Mimas over Saturn:
    (Source: http://phys.org/news/2017-06-image-mimas-saturn-north-pole.html)

    [​IMG]


    To @Andy Resnick and others:
    Andy, I've stumbled upon two links I'd like to share:

    Focus stacking (with Photoshop):
    Photoshop Playbook: How to Blend Multiple Images with Different Depths of Field (youtube)

    Noise reduction stacking
    (a method with Photoshop and some other software, I doubt it's better than DeepSkyStacker, but anyway):
    A Look at Reducing Noise in Photographs Using Median Blending

    We have very cloudy skies over here at the moment, and no noise reduction method will fix that... I am waiting for clear skies...
     
    Last edited: Jun 9, 2017
  3. Jun 9, 2017 #253

    DennisN

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  4. Jun 28, 2017 #254
    I figure this thread has room for one more awesome shot of a familiar planet.:smile:
    cassini-saturn.jpg
     
  5. Jul 5, 2017 #255
  6. Jul 5, 2017 #256

    davenn

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    wonderful photo of red sprites
    I have yet to photo these, still on my bucket list :smile:

    I have a stormchaser friend that photo's them quite often .... here's an example .....

    19466710_1838278026189846_4107161889285314869_o.jpg


    cheers
    Dave
     
  7. Jul 5, 2017 #257
    I agree, those things are amazing to look at. I wonder, without video, would anyone ever get lucky enough to photo them? seems like even on "burst" setting a still camera shot would be extremely long odds of recording them. I notice there seems to be many more Sprite images out there than the Blue Jets, are the Sprites more common ?.
     
  8. Jul 5, 2017 #258

    OmCheeto

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    I devoted an entire thread to that image about 6 years ago. I think I looked at it too closely.
    Of course, that was before Marcus got me hooked on Ceres, so some of the things I said appear to be incorrect.
    It is a composite, just not what I would have called "composite" back then.
     
  9. Jul 6, 2017 #259

    mfb

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    Staff: Mentor

    An actual photo from Saturn's rings, taken by Cassini (only cleaned to remove cosmic rays and detector noise). Source

    20170630_N00282563_cleaned_f840.png
     
  10. Jul 24, 2017 #260

    Andy Resnick

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    Ring Nebula (M57): first image is full frame (800/5.6), 1h 46m exposure, second is a 1:1 crop.

    1h_44m.TIF%20RGB_zpsnhnqnzf3.jpg

    3X_17m_zpsddjb31ng.jpg

    Lots of objects are in view now (for me): Jupiter, Saturn and Pluto are all favorably positioned and Cygnus is coming into view. One more clear night to see if I can capture Pluto....
     
  11. Jul 25, 2017 #261

    davenn

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    yeah, all the time as with that photo I posted above

    the usual way is just to do a string of timed exposures, as Marko did
     
  12. Aug 9, 2017 #262
  13. Aug 16, 2017 #263

    Andy Resnick

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    Back from vacation, busy doing class prep. It was cloudy every night, so I ended up making timelapse 'videos', here's two of them: one frame was acquired every minute, starting around 6pm and going until I passed out around 2am

    A good one, managed to hold a constant exposure during an illumination change of 24 stops:


    The best one- see the (near) full moonrise, a thunderstorm, lots of activity.


    Enjoy!
     
  14. Aug 17, 2017 #264

    DennisN

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  15. Sep 11, 2017 #265

    Andy Resnick

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    5 hours of viewing (400/2.8 ISO 640) over the past 2 weeks:

    4h_31m_filtered_zps1rn16a3f.jpg

    not bad!
     
  16. Sep 12, 2017 #266

    DennisN

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  17. Sep 19, 2017 #267

    Andy Resnick

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    A few images of the starfield in Cygnus: the first one is about 3 fields of view at 400mm (full frame) covering most of the North American nebula and the second is the veil nebula, nearly filling a single field of view (at 400mm). The density of stars is really striking.

    ttom_corrected_filtered%20-%20dark%20spot%20top_corrected_filtered_fused.tif%20RGB-1_zpswz8wnncd.jpg

    5h_6m_filtered_zpskpcswuya.jpg
     
  18. Sep 19, 2017 #268

    davenn

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    very cool images mate, well done :smile:
     
  19. Sep 22, 2017 #269
    A cool shot of Jupiter on NASA's image of the day.
    pia21966-1041.jpg
     
  20. Sep 26, 2017 #270

    Andy Resnick

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    Great ISS flyover this evening:

    DSC_2200-1_zpsmsbgibww.jpg
     
  21. Sep 26, 2017 #271

    ISamson

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  22. Sep 26, 2017 #272

    ISamson

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    saturn-in-eclipse.jpg

    Cassini's picture of Saturn with the Sun behind Saturn
     
  23. Sep 26, 2017 #273

    ISamson

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    acf4e9c8ebe7153d072f26dce0931ee1.jpg

    Predicted view from the moon Titan.
     
  24. Sep 27, 2017 #274
    Very nice!

    Meanwhile, no satellite, no flyby, no animation, no photos, no video, no NASA tech crew - nothing but birding binoculars and naked eye; but as a total beginner I was pleased to get my own first-time view of Saturn last night, a very bright dot just below and to the left of the equally bright waxing crescent moon. The dot really did seem gold in color; I thought this might be my imagination until I looked it up.
     
  25. Oct 2, 2017 #275

    sas3

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    Nice what setup did you use
     
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