permaculture playing cards*
The moose likes Meaningless Drivel and the fly likes Venus transit Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Other » Meaningless Drivel
Bookmark "Venus transit" Watch "Venus transit" New topic
Author

Venus transit

Martin Vajsar
Sheriff

Joined: Aug 22, 2010
Posts: 3436
    
  47

In a few hours a transit of Venus (passage of Venus in front of Sun, as seen from Earth) will begin. The event will be at least partially visible from most of the world (only parts of Africa and South America are out of luck, and Portugal too). Unless medicine get way better in a few decades, no one of us gets a second chance (the next one is scheduled no sooner than one hundred and five years from now, and that schedule will be met ).

Should you be interested, more information can be found at the Bad Astronomy Blog. If you decide to take a look, please follow the instructions in that article. Looking directly into the sun with unaided eye is not recommended, and looking at it using binoculars or a telescope can blind you instantly.
Dave Trower
Ranch Hand

Joined: Feb 12, 2003
Posts: 85
I am planning on seeing it tonight. There is group that is setting up some telescopes to see this. I am taking my 5 year old daughter.
Anayonkar Shivalkar
Bartender

Joined: Dec 08, 2010
Posts: 1456
    
    5

Unfortunately, its very cloudy and a little rain here - so I'm quite doubtful if I would be able to see this

Dave Trower wrote:I am planning on seeing it tonight

Are you sure? It is highly recommended to see the transition during the day You might be talking in reference to a particular time zone I guess.

Apart from this, if you want to photograph it - use a very high shutter speed (faster than 1/1500 sec) instead of using ND filter and taking long exposure shot. Sun rays are not very friendly with camera sensor.
And most importantly, do not ever, try to see it via optical viewfinder. Even if you have state of the art full frame DSLR which boasts of 100% viewfinder, please, please use live view to take this shot. Watching sun through viewfinder will make the viewer blind instantly (at least that is what people say - I haven't tried it, and I'm not gonna try it ). I agree that focusing is quite slower with live view, than with viewfinder, but then, you are focusing on sun, not some sports car in high speed

This will be the last Venus transit of our lives, so enjoy!


Regards,
Anayonkar Shivalkar (SCJP, SCWCD, OCMJD, OCEEJBD)
fred rosenberger
lowercase baba
Bartender

Joined: Oct 02, 2003
Posts: 10916
    
  12

Anayonkar Shivalkar wrote:And most importantly, do not ever, try to see it via optical viewfinder.

This cannot be overstated enough. The same holds for binoculars and telescopes. Unless you know EXACTLY what you are doing, never look directly at the sun with any of these. And if you DO know what you are doing, you'll know not do to it!!!

It's just like using a magnifying glass to set leaves on fire - except in this case, it would be your retina, not a leaf.


There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 2969
    
    9
Yeah, but surely everyone workout out all these details two weeks ago for the annular solar eclipse, right?

Unfortunately my Eclipse-O-Vision solar filters will not help me see through the cloud cover we're currently looking at here.
Koen Aerts
Ranch Hand

Joined: Feb 07, 2012
Posts: 344

Dark clouds and rain here... I'll have to follow the event on the Internet: http://www.ccssc.org/transit2012.html
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 2969
    
    9
Another useful link:

http://venustransit.nso.edu/
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 2969
    
    9
Or as Phil Plait says at the Bad Astronomy site that Martijn linked to in the first place: "There are approximately eleventy bazillion websites with more info."
Bert Bates
author
Sheriff

Joined: Oct 14, 2002
Posts: 8764
    
    5
What are the odds, the 100" eclipse viewer I built a couple of weeks ago proves useful again

This transit is cool!


Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 2969
    
    9
Who could have forseen such an event?
Mike Simmons
Ranch Hand

Joined: Mar 05, 2008
Posts: 2969
    
    9
OK, the cloud cover broke enough for me to verify that yes, there really is a little dot there on the sun; it's not just a mass hoax. Yay!
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 13875
    
  10

I woke up an hour early to have a look at it (here in Europe it was visible during sunrise). But it was completely overcast and raining, so there was nothing to see. Well, I'll just hope that someone invents a pill so that I can live to be 146 years old, and hope that the weather will be better in December 2117.


Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 7 API documentation
Scala Notes - My blog about Scala
Anayonkar Shivalkar
Bartender

Joined: Dec 08, 2010
Posts: 1456
    
    5

Jesper de Jong wrote:I woke up an hour early to have a look at it (here in Europe it was visible during sunrise). But it was completely overcast and raining, so there was nothing to see. Well, I'll just hope that someone invents a pill so that I can live to be 146 years old, and hope that the weather will be better in December 2117.

Well, I had a good chance to see previous transit (in 2004), so, even though I missed this one (for the same reason - clouds), I don't feel too bad

On a serious note, just to see another Venus transit, living 105 years more is not worth
Ryan McGuire
Ranch Hand

Joined: Feb 18, 2005
Posts: 988
    
    1
There was only a small time window between the the clouds mostly dissipating and the sun going below the tree line. Even then, the image projected by my ad-hoc pin hole camera (made out of a McD's pop cup and a receipt from a recent car repair) was pretty fuzzy. Between what I could see and what I wanted to see, I'm going to declare that I the little dark splotch was in fact Venus and not a bit of cloud or other non-Venutian object. The size matched up pretty well with what was in the 2004 images.

Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 13875
    
  10

I had prepared my binoculars with a piece of cardboard like at the end of this video, but it was all for nothing...
fred rosenberger
lowercase baba
Bartender

Joined: Oct 02, 2003
Posts: 10916
    
  12

If you go to The Bad Astronomer's blog and scroll through, you can find some amazing photos/videos of the transit.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Venus transit
 
Similar Threads
If your name is on this list
Sometimes I feel like a motherless child
Why is the sky dark at night
MEN's Brain VS WOMEN's Brain
WA #1.....word association