Explain This...

DanielHigginz

IMG_000F.jpg

In this image I took at approximately 23:27 - 18/07/12 you can see that the central object is unlike any other in the photo. It has another protrusion of light emanating from it in on the Y Axis in a different direction to all the other stars.

If someone could explain this it would be great because I just don't know.

PS - Shutter Speed: 30secs

jfSDAS

Hi Daniel,

I suspect it is an artefact on the image caused by vibration as the shutter was pressed - did you use a remote cable or manually press the shutter?

The reason for this opinion is that the streak of light is on the brightest star in the image. Such a thing would happen in the initial second or two before the vibrations in the camera dampen down. No stteak is on the fainter star images -- that said, if you look at the next two brightest points, close together and to the left of the brightest object, they too seem to have a hint of a light streak in the same orientation as that being queried.

It looks like the photo is of part of the constellation Lyra, Vega being the brightest star recorded & epsilon Lyrae, the famed "double-double", the two close together next brightest stars.

If manually pressing the camera shutter using a cable release gets over the shutter vibration issues (or start the exposure with the lens cap on & remove it after a second or so).

atb,

John

shedweller

On the money i think, John!