Lyrid meteor shower

ghinson

This morning at 4am.

DaddyO

Ya got one. Nice.
A very fine shot. Well done. Reminds me of somewhere in Africa.

Did you get the expected 20 an hour?

Galactic Downtown. Love that piece of sky.

ghinson

DaddyO wrote:

Did you get the expected 20 an hour?

Funny thing is, I don't know. My glasses broke last night. So I went out blind. Set the camera's focus to infinity. I can see well enough to frame with the LCD. The I used the intervalometer to take a 25-sec exposure every 30 sec. I shot for about 20 minutes, and got 3 or 4 frames with meteors.

(I guess I could do the math.)

Nikolai

ghinson wrote:

Funny thing is, I don't know. My glasses broke last night. So I went out blind. Set the camera's focus to infinity. I can see well enough to frame with the LCD. The I used the intervalometer to take a 25-sec exposure every 30 sec. I shot for about 20 minutes, and got 3 or 4 frames with meteors.

(I guess I could do the math.)

1) Nice shot! Love the tree and the Milky Way!
2) Kudos for going out!
3) 25 sec exposures? Interesting.... I was under a stroing impression that one starts getting the "star streaks" after 15 sec. Your stars look as dots, not as streaks.
I guess either it's due to a low resolution/small size of the web image presented, or I need to reconsider my star-shooting habits...

00SS

Very well done
Like was mentioned by Nikolai, i to thought there would be some trails with that long of an exposure.

humanrr

Beautiful....

I'm jealous, we've had nothing but overcast skies. :cry

ghinson

I did an experiment last year and found 25 sec to work. I've printed ones like this as large as 11x14 and they stay as dots. When I really zoom in though, you can see some movement.

invisible

Nikolai wrote:

3) 25 sec exposures? Interesting.... I was under a stroing impression that one starts getting the "star streaks" after 15 sec. Your stars look as dots, not as streaks.
I guess either it's due to a low resolution/small size of the web image presented, or I need to reconsider my star-shooting habits...

The time it takes the stars to show streaks depends on the focal length. If you're using an ultra-wide angle, you can expose for about 30 seconds and still get dots, not trails. The longer the focal length, the shorter the exposure before trails start showing.

It's a beautiful shot, and the foreground tree takes it to the next level.

EDIT: On another forum, someone posted this formula for 35mm format: 600/(Focal Length) = Maximum Exposure Time. So, for example, if you're shooting with a 24mm lens the math would be: 600/24mm = 25 seconds. An exposure longer than 25 seconds will give you trails.

jsqueri

Fantastic astro shot and the tree adds nicely to the composition.

Nikolai

invisible wrote:

The time it takes the stars to show streaks depends on the focal length. If you're using an ultra-wide angle, you can expose for about 30 seconds and still get dots, not trails. The longer the focal length, the shorter the exposure before trails start showing.

It's a beautiful shot, and the foreground tree takes it to the next level.

EDIT: On another forum, someone posted this formula for 35mm format: 600/(Focal Length) = Maximum Exposure Time. So, for example, if you're shooting with a 24mm lens the math would be: 600/24mm = 25 seconds. An exposure longer than 25 seconds will give you trails.

Interesting.. Thank you for sharing.
I never heard of this "600" rule... Hey, look, ma, I learned something!

ghinson

invisible wrote:

On another forum, someone posted this formula for 35mm format: 600/(Focal Length) = Maximum Exposure Time. So, for example, if you're shooting with a 24mm lens the math would be: 600/24mm = 25 seconds. An exposure longer than 25 seconds will give you trails.

Excellent. That explains it. These were 14-24mm!

dlplumer

Excellent!