[nikonf4] Re: Meteors / Aurora

  • From: "John Osthus" <josthus@xxxxxxxxxxx>
  • To: <nikonf4@xxxxxxxxxxxxx>
  • Date: Thu, 9 Dec 2010 19:10:52 -0600

13 seconds.  3200 I think.


Much longer than that and the noise goes up and the stars get blurrier.


I am curious about experimenting with combining 15 2-secod exposures, or
something like that.


From: nikonf4-bounce@xxxxxxxxxxxxx [mailto:nikonf4-bounce@xxxxxxxxxxxxx] On
Behalf Of Eric Welch
Sent: Thursday, December 09, 2010 8:23 AM
To: nikonf4@xxxxxxxxxxxxx
Subject: [nikonf4] Re: Meteors / Aurora


The difference is film has no chance competing with a D700 at high ISO. I
believe that would be 13 seconds. I remember shooting Northern Lights in
Canada back in the early 80s on Kodachrome 64 and a Pentax LX and 50mm 1.4.
I think the exposure - picked by the camera reading off the film (the LX was
one of the first to read ambient exposures reflected off film) - was about
30 seconds.


On Dec 8, 2010, at 11:50 PM, Koichi Mac wrote:

            Um.that's for Windows, isn't it?  Let me see if I can check the
metadata.  Got it, here is PNG.  So that's 13 seconds? or 1/13 second? -
much shorter than I anticipated anyway.  I have a shot of northern lights /
aurora, spent about 8 minutes with film and wouldn't show up spectacularly
like that, suffering a massive reciprocity failure.

<Screen shot 2010-12-08 at 11.46.01 .png>

Koichi Yasutani - a.k.a. Steve + MP
Lakewood, WA U.S.A.
2010 / 12 / 8                23:49 PST

On Nov 30, 2010, at 2016 , John Osthus wrote:

I believe I did not strip it out of the EXIF.


Do you have Opanda?




Nice to have.  A right click leads you to all of the data.


-----Original Message-----

From: Koichi Mac [mailto:nikonf3tmd4@xxxxxxx] 

Sent: Tuesday, November 30, 2010 9:56 PM

To: John Osthus

Cc: Nikon F4

Subject: Re: Meteors


            Thanks for the forward.  Shows really nice.  Mind to share data?


On Nov 30, 2010, at 1945 , John Osthus wrote:


From: John Osthus [mailto:josthus@xxxxxxxxxxx] 

Sent: Tuesday, November 30, 2010 8:53 PM

To: 'Eric Welch'

Subject: FW: Meteors


Hi Eric


Thanks again for the Audio help.


If you look at this at 100 percent you can see 4 meteors, faintly.  All

near the center  of the screen sort of.






From: John Osthus [mailto:josthus@xxxxxxxxxxx] 

Sent: Tuesday, November 30, 2010 8:46 PM

To: 'jaypax@xxxxxxxxxxxxx'

Subject: Meteors




Thanks for your interest.


This is a low-rez version of a NEF I shot with the D700.


There are a couple of faint trails near the milky way near the center of

the image, and a couple of smaller traces on the left center.  You have to

enlarge to 100 percent to see them well.


Not show stoppers when it comes to meteors - these were accidents while I

was shooting the milky way hoping for a meteor.  I didn't see any of these

the camera caught.











An engineer, a physicist, and a statistician were moose hunting in northern
Canada. After a short walk through the marshes they spotted a HUGE moose 150
metres away. The engineer raised his gun and fired at the moose. A puff of
dust showed that the bullet landed 3 metres to the right of the moose. The
physicist, realizing that there was a substantial breeze that the engineer
did not account for, aimed to the left of the moose and fired. The bullet
landed 3 metres to the left of the moose. The statistician jumped up and
down and screamed "We got him! We got him!"







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