It does say that the cave interior was lit by flashlight during the long exposure. With a few practice shots, you could easily adjust how much light the interior got by low long you kept the flashlight on. The rest of the time, the interior of the cave would be totally dark and not be a factor.
I'm guessing he took 20 bad ones to get this one good one. --CF > > The picture explanation states " Pictured above is single exposure image". > I clicked on the "pictured above" link and it took me to: > > http://www.twanight.org/newTWAN/photos.asp?ID=3001638 > > This has more story from Wally about taking the photo. > > It's got to be a SENSITIVE camera/sensor. > > Can you say "image stabilization"?? > > Bob > > > > Date: Mon, 29 Sep 2008 21:14:31 -0500From: [email protected]: > [email protected]: Re: [Texascavers] Cave photoCC: > [email protected]; [email protected]; [email protected] > I'd think the same - Both the interior and exterior could be done from one > exposure - but not the SAME exposure. Or at least one adjusted to the > other. OR DARN sensitive filim!-WaV > On Mon, Sep 29, 2008 at 1:27 PM, Charles Goldsmith <[email protected]> > wrote: > From talking to someone here at work that does a lot ofastro-photography, > he said that Milky Way image is easily less than aminute exposure, given > really dark skies.However, he also states that the cave image was probably > overlaid froma 2nd exposure, otherwise you would likely have some > movementindication from inside the cave.Either way, its a beautiful > picture.Charles > > > On Mon, Sep 29, 2008 at 12:41 PM, Frank Binney <[email protected]> > wrote:> Hey Bob--> Cool photo....but I wonder if photo shop was involved. > If you took an> exposure long enough to get that type of detail in the > Milky Way, wouldn't> you get star streaks from the Earth's rotation during > the long exposure> time? Any astro experts out there with an opinion? Or > half-astro experts?> Frank>>> On 9/29/08 10:20 AM, "Bob West" > <[email protected]> wrote:>> Cave photo of the day from the 'astronomy > picture of the day' site....>> > http://antwrp.gsfc.nasa.gov/apod/astropix.html>> Very nice!>>>> Bob>> > ________________________________> Stay up to date on your PC, the Web, and > your mobile phone with Windows> Live. See Now > <http://clk.atdmt.com/MRT/go/msnnkwxp1020093185mrt/direct/01/>>>---------------------------------------------------------------------Visit > our website: http://texascavers.comTo unsubscribe, e-mail: > [email protected] additional commands, e-mail: > [email protected] > _________________________________________________________________ > See how Windows connects the people, information, and fun that are part of > your life. > http://clk.atdmt.com/MRT/go/msnnkwxp1020093175mrt/direct/01/ --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
