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Actually, check out this long exposure:

http://i.imgur.com/sy6cSDV.jpg

It shows all 5 burns, in one shot. From a /r/spacex comment [1], we have:

   1 - The ascent burn of the 9 Merlin-1D engines: the long bright arc upwards,
   2 - the single Merlin-1D-Vac second stage burn: the thin, short line starting after the short pause of MECO,
   3 - the 3-engine 'boostback burn' of the first stage, the upwards arcing thin 'fish hook' part that is overlaid with the thin second stage arc - which sent the first stage on a return trajectory towards Landing Zone 1,
   4 - the 3-engine 're-entry burn' of the first stage at an altitude of about 50 miles: the bright vertical line above the ascent arc,
   5 - and the final 1-engine 'landing burn' of the first stage: the lowest bright vertical line ending at the landing pad!
It's a fantastic photo!

[1] - https://www.reddit.com/r/spacex/comments/4tdi30/heres_my_lon...




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