Originally posted by NotAnAspie
I am not desperate to try and discredit you... relax.
No. You will quote me where I said the dark splotch WAS a bokeh, or you will retract the claim. I do not tolerate being lied about or having words
put into my mouth.
all definitions I have seen on the web consistently say that it is an area of the photograph.
It is the area that is defocused, and in the case of astrophotography that is always the entire photograph. Astrophotography isn't like normal
photography and the normal rules do not always apply. Get over it. I've been doing astrophotography for 12 years now, that's what we call it.
Speaking of the video... there are SEVERAL videos on yt that show the same dark spot... some of them look a tad different but still show a shadow.
It's not a shadow, it's a splotch on the bokeh image, or "the defocused image of Venus" if you refuse to simply call it a bokeh (if you can't see why
astrophotographers call it a bokeh then lord help you). Since it's completely out of focus it does not tell you anything about the true shape or
detail of Venus. Let me spell it out for you since you still don't get it; the "shadow" as you keep calling it has nothing to do with Venus, it is
caused by the optical system, whether it's a defect, a misalignment, dirt, grime, grease, a melted spot on a lens, dust, or whatever else, it has
nothing to do with Venus. I showed you what Venus actually looks like right now. I even showed how it looked simultaneously in a camcorder. Even my
camcorder's optics produces a bokeh image with a dark spot in the center, just more symmetrical than the OP's video. And I repeated this again on a
Then on some out of focus videos of venus, it shows a pale inner shadow that is much more uniform... and i do believe those examples are solely
from the lens or as some would say (god have mercy on me )... a *bokeh*
They're ALL solely from the lens. ALL of them, because that's all the bokeh image tells you!
but this particular shadow doesn't seem very uniform or likely (imo) to be solely due to the lens.
That's because you're ignorant of astrophotography and how bokehs work. I not only told you, I showed you, and still you do not listen and you do not
learn a thing. It's not even a matter of it being "likely" due to the lens, IT IS DUE TO THE LENS. Since it's completely out of focus, that is
guaranteed to be true!
but here's what i think. i think it was edited with a shadow and that multiple slightly different examples are showing up to set a little yt
trend, because this "venus shadow" topic is getting hits and some on yt are desperate to get hits on their account because they are yt/google
partners... i know, i know... people are crazy- it's true.
Sure you could do it with CG editing, but it would incredibly tedious to sync it to the motion of the bokeh in the video and incredibly bone headed to
do it that way since it would be the most difficult way of creating it; all you have to do is intentionally smear a bit of gunk on the front of the
lens of the camera, then film Venus out of focus. No editing required. Again, since the bokeh only tells you about the lens, anything you do to the
lens will be seen as a change to the bokeh. Whether done intentionally or accidentally, that's all it is though.
also, venus is coming up now as a crescent, as it seems, and the time this was taken, it couldn't have been in a fuller phase... so there is def
something wrong with the video from the get go.
Well again, you're not going to see that with a camcorder unless it has exceptional angular resolution, and more importantly, is in focus. I shot
Venus at the same time with a camcorder and with a telescope. The camcorder still shows a full circle of a bokeh regardless of Venus' phase.
what i don't understand about venus right now is why people can get webcam shots of JUPITERS FREAKING MOONS, not to mention the rings on saturn... but
all anyone can get on venus is an itty bitty cresent.
What is it that you expect to see of Venus? It didn't look "itty bitty" in my video, at least not to me. Hell, Saturn looked a bit smaller than
Venus at first in the above video (40 minutes in) at the same magnification I was using on Venus, until I zoomed in more. The crescent shape is all
Venus has to show you. It has no moons and no rings.
I mean, trying to understand the crescent part but we can't even get a bigger crescent???
I could zoom in more as with Saturn, but you won't see any additional detail; Venus is too low in the sky too soon now, thus there's too much
atmospheric turbulence to look through to make it worth it.
why do we just to see the same ones over and over and over??
See above, new video for you.
edit on 18-5-2012 by ngchunter because: (no reason given)