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Re: [OM] Perseid meteor, IFO, light pollution, questions

Subject: Re: [OM] Perseid meteor, IFO, light pollution, questions
From: JOHN DUGGAN <john.duggan10@xxxxxxxxxxxxxx>
Date: Sat, 13 Aug 2016 00:40:35 +0000 (UTC)
Lawrence ,At least you got some shots! In Colorado springs the sky was all 
clogged in after evening thunder storms. I hope for better luck tonight. In the 
past we have had good luck with visibility in Wyoming  and Livermore .Just the 
luck of the draw I suppose,  :-(>Regards John Duggan, Wales, UK

      From: Lawrence Woods <lmwoods@xxxxxxx>
 To: olympus@xxxxxxxxxxxxxxxxx 
 Sent: Friday, 12 August 2016, 20:00
 Subject: [OM] Perseid meteor, IFO, light pollution, questions
   
Instructions for photographing the Perseid meteor shower said to
        1) Get as far away from urban lights as you can.
        2) use the fastest, widest lens you have. Lock the lens on 
infinity in advance.
        3) Expose wide open for 15-25 seconds, ISO 1200-2500

I could not heed instruction #1.  I was in my backyard 14 miles NW of 
Boston MA, a few hundred feet from a well-lit main road.
I used a 12-40 f/2.8 m.Zuiko  set to 2.8 and 12mm on an E-M5, original 
mark I model.  I had the camera on a tripod, used the 2-second 
anti-shock shutter delay, manual exposure mode, and had image 
stabilization turned off.  The light pollution was so severe that to 
maintain any semblance of a dark sky over a 20 second exposure, I had to 
crank the ISO down to 200.

This is an example of what I got: 
http://zone-10.com/tope2/main.php?g2_itemId=20573
Lowering the ISO took its toll.  The meteor trail to my eye was brighter 
than an ember in a fireworks display.

I also caught an IFO (identified flying object): 
http://zone-10.com/tope2/main.php?g2_itemId=20576

These pictures have no post-processing.  I'm probably doing something 
wrong, but when I tried to darken the sky, the stars and trails got 
dimmer as well.

I have a couple of questions about how the E-M5 functioned...

1) Can the Mark I E-M5 display progressive results on the LED screen 
during a time exposure?  Page 89 of the manual is not at all clear on 
what exactly Live Bulb and Live Time do, and trying Live Bulb didn't 
seem to do anything.
2) After the shutter closed, it took about 40 blinks of the orange SD 
card symbol (~15 seconds?) to write the picture to the card before I 
could start the next exposure.  Why did it take so long after a time 
exposure?  The night-sky files were actually smaller than normal 
hand-held daylight  pictures, running around 5.3 MB, versus 6.4 to 8.4 MB.

      ----- Larry Woods


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