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Eclipse Questions

Discussion in 'Astrophotography' started by marcr1230, Jun 24, 2019.

  1. marcr1230

    marcr1230 Mu-43 Regular

    178
    Nov 28, 2013
    I've been preparing to photograph an eclipse on July 2.

    most of the decisions have been made.

    I want to try to take a composite of the stages of the eclipse

    people suggest a lot of bracketing of exposures

    is there a recommended intervalometer ?

    I can use the OMD E-M1's built in time lapse time - but it does not bracket

    is there a gadget that I can , so I set the camera to bracket ( 5 exposures) and then the intervalometer takes 5 photos every 10 secs ? ( the full bracket)

    I don't think the bracketing works with the in camera time lapse on its own

    thanks
     
  2. Brian M Miller

    Brian M Miller New to Mu-43

    5
    Jun 24, 2019
    I am curious why you want to use bracketing for each interval. Will you be doing stacks of each interval to increase sharpness? Also, why such a short interval?

    I did a time lapse of the lunar eclipse last January. I spaced the single shots about thirty seconds apart, and then animated the entire sequence. Came out well.

    I would expect that any external intervalometer that works with the E-M1 would work for you, to trigger the bracketing. I had an inexpensive one that I used with my Olympus DSLRs. Since I got the E-M1 mk2, I haven't had need for one.
     
  3. Wisertime

    Wisertime Mu-43 Hall of Famer Subscribing Member

    Aug 6, 2013
    Philly
    Steve
    Having witnessed my first and only eclipse in 2017, be sure to actually enjoy it and take it in. It's awesome and it will be over in a flash. Try to automate/practice ahead of time, so you can truly take it in. I have no other advice. Good luck! I'm looking forward to 2024 catching the next one in NA.
     
    • Agree Agree x 2
  4. archaeopteryx

    archaeopteryx Gambian sidling bush Subscribing Member

    965
    Feb 25, 2017
    Solar eclipse or lunar eclipse? For solar, this was done with a one minute intervalometer without bracketing and preceeded by a few non-eclipse practice runs in the weeks before to set up the composition, establish the exposure, and verify the compositing process in StarStax and GIMP. Just before totality I switched from M to A with exposure compensation and removed the NDs. Switched back after.

    While the resulting composite uses images at three to ten minute intervals, one minute intervals gave compositional flexibility for the sequence. 5-15 second intervals into, through, and out of totality seem desirable and, next time, I'd probably set up a switch between custom settings rather than M to A for the extra flexibility. Since images at totality are usually twilight landscape with a blown corona I'm inclined to view the main purpose of bracketing as obtaining a less blown corona. If you're also planning HDR details during totality those can be downsized and merged into the composite, so I'm not sure bracketing is critical.

    Like Brian, I'd expect any external intervalometer to trigger a bracket. I've used both a phone app with cable and an inexpensive dedicated unit without problems.

    For solar, totally this. Lunars are more frequent and totality isn't as dramatic, so for lunar the above is probably overkill.
     
    • Like Like x 1
  5. marcr1230

    marcr1230 Mu-43 Regular

    178
    Nov 28, 2013
    So plans are forming and changing

    I decided that taking and managing 2 tripods without more automation is not the best idea - also hard to travel with the extra tripod - so going with one

    I’m going to focus on closeups of the eclipse and not a wide time lapse or composite

    I discovered a log of great information on how to set up. PhotoPills has an amazingly useful site and app

    I’ll be shooting with a 300/f8 and 2x extender on a tripod - set up the E-M1.2
    To bracket varying the shutter speed from a base value - will attempt to do some composited after the fact of totality

    I’m using bracketing, ibis off, mechanical shutter, manual focus, manual exposure ( starting point then bracket off that)

    I have a 40-150/2.8 on a second body for some wider shots as the sun sets ( eclipse still partial) - also bring the 12-40 for shots of the viewers/crowd

    Using white oaks filters - I bought material to make my own but probably won’t because not using the wide lens for composite

    Not sure what the exact location will look like - but it’s called “Bella Vista”

    What else - packing and travel is stressful- caring gear onto a plane when you are in group 6 - stressful

    Deep breaths
     
  6. marcr1230

    marcr1230 Mu-43 Regular

    178
    Nov 28, 2013
    Tape to hold the manual focus - although I expect to refocus a couple /few times during the partial phases

    Warm clothes - it’s winter there, lows are in the 30’s and will be outside all day

     
  7. barry13

    barry13 Mu-43.com Editor Subscribing Member

    Mar 7, 2014
    Southern California
    Barry
    Hi, I'd suggest putting the gear in a smaller bag that can fit under the seat, so they cannot force a gate check on it.
     
  8. marcr1230

    marcr1230 Mu-43 Regular

    178
    Nov 28, 2013
    Yes - I put the cameras and lenses in an REI 60L soft duffel as a carry on bag, clothes and tripod in roller bag, which I checked. They started force-checking roller bags during group 4, so was a great decision.

     
    • Like Like x 1
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