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Originally posted by elevenaugust
To definitely close this story, please take a look at this animated GIF:
Originally posted by alfa1
Absolutely confirmed.
Just out of curiosity, what did you use to find the field of view in question here? I know there is automated software to match any photo to stars... but did you just take the time to find this one by hand?
And yes, do expect to find more posts from people who dont read the thread before posting "its the ISS".
Tell me what you think but it looks pretty similar to me.
Yes, bright stars and shaky optics are favorite methods for creating 'extraterrestrial lights'.....
Remember, in that video you see Sirius at around 300x magnification, so the focused light spot is pretty big, but you can see the effect of scintillation on the images. I had to thump my weighty Meade scope to make it vibrate in an attempt to duplicate the hand-held effect. A cameraman's heartbeat also affects it.
Originally posted by decepticonLaura
but i am totally not going for the star-jiggle explanation
mostly because i am a terrible photographer
and if there is anything i know about
it's camera shake. especially applied to bright lights in darkness.
the camera tracks the light at every point in it's motion across the lens? so that what you end up with is a trail of light directly related to the motion of the camera.
i mean, we've had people here saying it's definitely the ISS, no doubt about it...
to re-use my texta analogy
and while we're at it, 80iso? f'real?
how on earth did this happen?
what is going on here?
Originally posted by CHRLZ
Originally posted by decepticonLaura
but i am totally not going for the star-jiggle explanation
mostly because i am a terrible photographer
and if there is anything i know about
it's camera shake. especially applied to bright lights in darkness.
Thing is, how much experience do you have with optics generally?
Can I ask some simple questions of you -
What if the lens was being *focused* during that 5 second exposure? What effect would you expect to see?
What if an element of the lens/telescope was just beginning to mist up? (you must know that this is a common issue with astrophotography..?) Again, what would you expect to see?
to re-use my texta analogy
A bad analogy is like using a left handed screwdriver on a nail..
I'm sorry, but what is happening here is that your puzzlement appears to relate to a lack of experience. There are some topics where mine is sorely lacking too, but this isn't one of them.
Originally posted by decepticonLaura
i will admit candidly i have little expeience[sic] of astophotography[sic]
i haven't seen anything that would lead me to expect movement/focussing could cause an effect like that though
yeah, let's say it's focussing
let's also say it's beginning to mist up
what both of things should do - generally do - in the real world -
is to blurr the light source. or disperse it. or make it bloom. or funky combinations of those.
but come on that thing has CORNERS
light and dark spots consistent with an illuminated object
even fins! by the look of it!
I'm sorry, but what is happening here is that your puzzlement appears to relate to a lack of experience. There are some topics where mine is sorely lacking too, but this isn't one of them.
gosh, and thanks for being such a sweetheart about it.
hey tell you what, since you're so smart and i'm so lacking in experience
could you do me a favour and take some shots replicating this effect?
i mean seriously
imagine the things one could draw in the sky with a little practice.