ISS photo tonight

Prenderb

I took the above (and a few others) this evening using a tripod, of the ISS passing over. I can't help but notice the strange apparent oscillation in the track of the ISS - it seems to me that it is either a vibration in the decking surface the tripod was on or something atmospheric. Anyone else any other suggestions?

Edit: Maybe it's speed wobble.

pixbyjohn

Is it doppler shift ?

mawk

its proof that the ISS isnt real!!

I can tell by the the real life pixels!!!

/runs to CT forum

Ciaran500

My guess is that its cause by how the camera processes data from the image sensor. In your image the ISS is passing diagonally across the frame and would be jumping between which pixel the camera is detecting it on.

Also, you should open up your aperture and drop the ISO level way down for pictures like that. Will give you a much cleaner image.

hbr

Prenderb wrote: »

I took the above (and a few others) this evening using a tripod, of the ISS passing over. I can't help but notice the strange apparent oscillation in the track of the ISS - it seems to me that it is either a vibration in the decking surface the tripod was on or something atmospheric. Anyone else any other suggestions?

Edit: Maybe it's speed wobble.

Does the ISS track run from bottom-right to top-left? The 'wobble' is quite
pronounced at the start of the track and the amplitude falls gradually until
it disappears at about 1.5-2s into the exposure. The most likely cause is
mirror slap. I have seen other reports of this problem with the K-x.

Can you use mirror lockup or live view mode with the K-x? This
might cure the problem. I would also suggest that you use a lower
ISO setting and longer exposure.

Here is one I took with my Panasonic FZ-28. The exposure time is 30s.
http://pix.ie/corkpix/1562599/size/800

Prenderb

I though as much myself today, but I use the 2s timer which is supposed to lockup the mirror then release shutter 2S after. I'll try again tonight and see if moving the tripod off the deck helps. Also will adjust exposure settings as suggested. Thanks all!

charybdis

Ciaran500 wrote: »

My guess is that its cause by how the camera processes data from the image sensor. In your image the ISS is passing diagonally across the frame and would be jumping between which pixel the camera is detecting it on.

Yeah, it's probably an aliasing artifact.

Zillah

I did the same thing!

Prenderb

I got off the deck and onto the grass tonight. This is what happened.



No zigzag steps, as far as I can make out. I hereby blame my stable deck building ability.

Merrion

I hereby blame my stable deck building ability.

Yup - you probably stepped back from the camera and shifted your weight accordingly..

irish147

nice pic

Prenderb wrote: »

I got off the deck and onto the grass tonight. This is what happened.



No zigzag steps, as far as I can make out. I hereby blame my stable deck building ability.

Zillah

I wonder if anyone in this thread has noticed that my shot was done in paint.

hbr

Zillah wrote: »

I wonder if anyone in this thread has noticed that my shot was done in paint.

You should have put in some noise and a few stars