Showing posts with label cactus. Show all posts
Showing posts with label cactus. Show all posts

Wednesday, April 1, 2009

Another Great (Old) Night - and Green Sky

You know, if I keep this up, it's not impossible that I could actually catch up in uploading pictures to my web albums. That means, that tonight, again, I didn't go out to capture new shots.

The pictures that I uploaded to Picasaweb tonight, were taken on May 30, 2008. As you can see in this first shot, there were a few nice clouds down low. But, sometimes, what you don't see, is that there lots of barely visible clouds up higher in the sky. When the sun is still bright, they just don't show up very well. This is how the night began ...



The lower the sun went, the more visible the higher clouds became. In this miniature version of this next shot, you have to look kind of hard to locate the Saguaro cactus. It's much more obvious in my full-sized original of the picture.

Also, notice up higher on the right side of the shot is a bright spot. These show up quite frequently when there is a very bright spot in the opposite corner of the shot- you know, sort of like the sun! They are refractions caused by the optics in the lense. (At least, that's what I think they are.)



These next two shots have always struck me as a little odd. I really enjoy the colors in the sky. But, I was playing around hiding the sun directly behind the top of a small Saguaro. They are just a little different. At least, there is the full sized Saguaro in the background. What do you think -- does the little round cactus add anything for you?





In the next shot I've moved over to place the sun back behind the full sized cactus again. But, I'm far enough from the cactus that it barely bigger than the sun. When I first started taking sunset photos, I really liked the zoomed-in, close-up shots. But the more I do this, the more the bigger, zoomed-out images are really growing on me. I think that it is important, however, to keep something in the shot to creat a point of interest -- like the tiny little cactus in front of the sun.



Now, in this next shot, quite the opposite of the wide angle shot above, here is what the sky and setting sun look like when really zoomed in. It really amazes me just how much the sky can look all uniform and red (or orange).



Well, back to the wide shot again. Remember that I said at the beginning of this post that I didn't know there were any clouds up high in the sky. Well, about the time of this next shot, the sun had gone below the horizon, and these higher-up clouds were starting to glow.



And, a while later, the sky was beautiful.



And, finally, for this last shot, until after I started taking sunset pictures, I'd never seen a green sky. Once I noticed the green in some of my pictures, I thought that this must be some anomoly of the camera. Surely, the sky couldn't really look green???

But, after I had seen this in lots of shots, I finally started paying attention while actually taking the pictures. And, sure enough, the green really is there!!! It seems to show up after the sky starts getting darker, and lives down low, near the horizon. If you don't believe me, go outside and look for yourself!

Saturday, March 7, 2009

Night Sky Photographs

Last evening, the sunset was just another one of those big-orange things. I kept checking the sky throughout the day, and there was not a cloud to be seen - just blue sky. OK, and some pollution in the air, which is what helps the orange look so great. So, I decided to not go out to shoot photos. Today, we had too many clouds. Instead of having a sunset, we just had increasing (decreasing?) grayness. So I didn't go out to shoot any pictures tonight, either.

Instead, I thought I'd post a picture from a couple of nights ago. Awhile back I had the desire to try and take some pictures of the stars in the sky with a cactus silhouetted in the foreground. My very first attempts yielded better results than I was expecting. But, one thing that makes these kind of pictures difficult, is that they happen so late at night. You know, after the sun has gone down!!!

This particular shot was taken at about 7:25 pm. I used ISO 400, f3.5, and an exposure time of 30 seconds. Several of my other 'star' shots, I took at ISO 200 and f6.3. But, I used the higher ISO for this shot so that I wouldn't have to take such a long exposure. I took some similar photos about 6 weeks ago where I wanted to show the rotation of the stars around the North Star. Some of those exposures were 15 minutes long. This means that I sat on the desert floor in the middle of January, for about an hour and a half, and went home with only about 6 shots.

Also, the White Balance setting makes a big difference. On the Canon camera, I like to use the Shade setting when shooting the sunset to bring out the red and orange colors. When shooting the night sky with the stars, the Shade setting makes the sky look quite red also. This is not an unpleasing effect. However, setting the white balance for Day or Cloudy makes the sky look more blue. Both ways look nice. It's just a matter of personal preference.

When these exposures are complete, and the Canon camera shows them on its LCD display, they look nice and bright. But, when I get back home and look at them on the computer, they are still very dark. So, to make them look nice, I have to increase the brightness of the highlights. I guess that is somewhat artificial, but it makes for nice looking pictures.

The picture above looks kind of dark on this page, but if you go to my Desert Night Sky PicasaWeb album and look at those shots in slideshow mode (which makes them fill more of the screen), they look quite nice.

In this shot, can you identify the North Star and the Big Dipper?

See the link to my Desert Night Sky web album.