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03/04/2011 12:02:38 AM · #1
Oooh... a Thursday challenge!
03/04/2011 01:19:22 AM · #2
Has that ever happened before? A thursday challenge that is?

Message edited by author 2011-03-04 01:19:36.
03/04/2011 01:28:17 AM · #3
I dropped my phone when I saw a new challenge on a Thursday
03/04/2011 02:28:51 AM · #4
Worst possible time for this challenge what with a new moon.
03/04/2011 03:25:25 AM · #5
This is going to be interesting. Not so sure I am going to be involved either lol. Would like to have an idea for it though.
03/04/2011 05:11:07 AM · #6
Really happy to see this. I was left uninspired with the current challenges on the board but this one really interests me. Thanks!
03/04/2011 05:22:23 AM · #7
oh, nice.
haven't seen a thursday challenge in a while, a few years maybe?
03/04/2011 06:53:32 AM · #8
Originally posted by marbo:

Worst possible time for this challenge what with a new moon.

ditto!!!
03/04/2011 07:15:15 AM · #9
Here it is the source of inspiration
03/04/2011 07:33:10 AM · #10
I immediately thought of this image when I saw this challenge.

Although as someone as pointed out this week may not be the right one for that.

03/04/2011 07:40:02 AM · #11
I find it bizarre that this, of all challenges, shows up on the night of the new moon: you'd think this would be a natural for full moon, wouldn't you?

R.

ETA: I see I'm Yankoing marbro :-)

Message edited by author 2011-03-04 07:40:50.
03/04/2011 08:02:57 AM · #12
Originally posted by Bear_Music:

I find it bizarre that this, of all challenges, shows up on the night of the new moon: you'd think this would be a natural for full moon, wouldn't you?

R.

ETA: I see I'm Yankoing marbro :-)


I'll avoid a double-yanko by quoting, but yes, my very first thought was "oh crap, I don't have a chance with the weather here" followed immediately by "well, it really doesn't matter, there's no moon!
03/04/2011 08:20:36 AM · #13
The folks in Romania certainly have an edge. They always have a full moon, don't they? Well they do in the movies. Same as real life.

So is it fair to ask how this can be done without that weird yellow hue? Is it as simple as a WB adjustment? Long exposures without lighting typically just turn out like film I've left in a hot car.
03/04/2011 08:22:51 AM · #14
It appears that this is one time when night photographers will be hoping for clouds and light polution from the big cities aroudn them....
03/04/2011 08:54:17 AM · #15
Originally posted by bohemka:


So is it fair to ask how this can be done without that weird yellow hue? Is it as simple as a WB adjustment? Long exposures without lighting typically just turn out like film I've left in a hot car.


Shoot RAW for sure. Play with white balance and hue in conversion.

R.
03/04/2011 08:56:01 AM · #16
Let me add, BTW, that another issue restricting night photography right now, in these parts at least, is absolutely frigid nighttime temperatures. And we don't have it anywhere near as bad as some places :-(

But I guess that's what makes it a "challenge"?

R.
03/04/2011 09:01:27 AM · #17
Originally posted by Bear_Music:

Let me add, BTW, that another issue restricting night photography right now, in these parts at least, is absolutely frigid nighttime temperatures. And we don't have it anywhere near as bad as some places :-(

But I guess that's what makes it a "challenge"?

R.

Quite balmy here in GA, however ;)
03/04/2011 09:22:59 AM · #18
Originally posted by Bear_Music:

Let me add, BTW, that another issue restricting night photography right now, in these parts at least, is absolutely frigid nighttime temperatures. And we don't have it anywhere near as bad as some places :-(

But I guess that's what makes it a "challenge"?

R.


i was thinking the same thing, i keeping coming up with ideas that will be hard to execute in the cold temps.
03/04/2011 09:29:07 AM · #19
Twilight and moonlight are of more interest to me than supplemental lights of civilization. But, I might use some of both. I like this challenge because it makes me think of how I can utilize the paucity of light to meet the challenge.

Initial research for Colorado. YMMV
for March 9, 2011
Moon: 23% waxing crescent, moonrise 08:20 (after sunrise), moonset 23:00
Sun: Sunset 18:00
Civil Twilight ends 18:27
Nautical Twilight ends 18:59
Astronomical Twilight ends 19:30
Temp forecast: +13 to +43 F.

Preliminary analysis: There is a window of available natural light to meet the requirements, with or without manmade light. Temps may be below freezing, but should allow outside photography.
03/04/2011 09:37:06 AM · #20
Is twilight considered post-sunset? The sun has dipped below the horizon, but there's still plenty of light around.
03/04/2011 09:40:47 AM · #21
Originally posted by mike_311:

Originally posted by Bear_Music:

Let me add, BTW, that another issue restricting night photography right now, in these parts at least, is absolutely frigid nighttime temperatures. And we don't have it anywhere near as bad as some places :-(

But I guess that's what makes it a "challenge"?

R.


i was thinking the same thing, i keeping coming up with ideas that will be hard to execute in the cold temps.


Saturday night should be good. High of 58 / low of 46.
03/04/2011 09:43:43 AM · #22
Originally posted by gcoulson:

Is twilight considered post-sunset? The sun has dipped below the horizon, but there's still plenty of light around.

I'm glad you asked, as this is important info for this challenge:

Civil twilight is defined to begin in the morning, and to end in the evening when the center of the Sun is geometrically 6 degrees below the horizon. This is the limit at which twilight illumination is sufficient, under good weather conditions, for terrestrial objects to be clearly distinguished; at the beginning of morning civil twilight, or end of evening civil twilight, the horizon is clearly defined and the brightest stars are visible under good atmospheric conditions in the absence of moonlight or other illumination. In the morning before the beginning of civil twilight and in the evening after the end of civil twilight, artificial illumination is normally required to carry on ordinary outdoor activities. Complete darkness, however, ends sometime prior to the beginning of morning civil twilight and begins sometime after the end of evening civil twilight.

Nautical twilight is defined to begin in the morning, and to end in the evening, when the center of the sun is geometrically 12 degrees below the horizon. At the beginning or end of nautical twilight, under good atmospheric conditions and in the absence of other illumination, general outlines of ground objects may be distinguishable, but detailed outdoor operations are not possible, and the horizon is indistinct.

Astronomical twilight is defined to begin in the morning, and to end in the evening when the center of the Sun is geometrically 18 degrees below the horizon. Before the beginning of astronomical twilight in the morning and after the end of astronomical twilight in the evening the Sun does not contribute to sky illumination; for a considerable interval after the beginning of morning twilight and before the end of evening twilight, sky illumination is so faint that it is practically imperceptible.
03/04/2011 10:27:49 AM · #23
Richard, my tendency is towards the first definition of twilight.
03/04/2011 11:01:58 AM · #24
Originally posted by gcoulson:

Richard, my tendency is towards the first definition of twilight.

On March 9, 2011
Sunset 18:00
Civil Twilight ends 18:27
Moon: 23% waxing crescent, moonset 23:00
This is my 27 minute window for natural light.

Moon altitude and azimuth and %disc:
18:00 53.3 245.7 0.23
18:10 51.6 248.3 0.23
18:20 49.9 250.7 0.23
18:30 48.1 252.9 0.23
03/04/2011 11:05:34 AM · #25
Someone already entered this challenge! How did they do it? It was already after sunrise when I woke up this morning. It must be an entry from Australia! (or an insomniac :)
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