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Author Topic: Venus transit  (Read 6714 times)

dilbert

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Re: Venus transit
« Reply #15 on: June 06, 2012, 12:14:54 AM »
Slept in...

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Re: Venus transit
« Reply #15 on: June 06, 2012, 12:14:54 AM »

Act444

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Re: Venus transit
« Reply #16 on: June 06, 2012, 01:37:00 AM »
wow, amazing shots guys.

squarebox

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Re: Venus transit
« Reply #17 on: June 06, 2012, 01:41:28 AM »
Man these are all amazing shots...  I just took it head on as it was directly above me with no clouds. 

I had bigger issues just getting the thing in focus.  I don't know why, but between when i focused on liveview and when i actually took the picture, my shots got blurry.
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dr croubie

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Re: Venus transit
« Reply #18 on: June 06, 2012, 02:12:23 AM »
Nice shots guys!
I went for a look outside just at the beginning of lunch (the windows in my office face a warehouse, not outside), and saw that the sun was completely free of clouds.
So I ran outside, set up the tripod with the Soviet baseball-bat telescope, managed to get off a few decent shots on the 7D.
I also tried the EOS3 with the iso50 Velvia, turns out the 3 doesn't like playing with lenses with no AF confirm chip (anyone else had this?), and had to turn it off/on again to reset the mirror (I'm not sure if the shutter was open the whole time, i guess i'l find out when I develop it)

Anyway, with the sun full on I was around 1/2000s at f/8-11 (so f/32-44), when bits of cloud went past they were down to even 1/4s.

Then I tried my Zeiss Sonnar 180/2.8 with only one 2x TC, when the cloud was over I was shooting wide open (360mm f/5.6) at 1/250s or so, in full sun it was 1/1000s at f/8 (really f/16).

So that ND400 + ND8 + B+W MRC UV combination didn't work too badly, hopefully I don't find too many dead pixels showing up in the next few days (and I can still see fine, mostly it was live-viewed). I'll see what I can do about processing them tonight when I get home from work...
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epsiloneri

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Re: Venus transit
« Reply #19 on: June 06, 2012, 03:54:06 AM »
We too had clouds :( After a while the clouds fortunately parted momentarily, presenting a spotted Sun along with Venus  8)

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dilbert

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Re: Venus transit
« Reply #20 on: June 06, 2012, 05:05:19 AM »
Just before it exited the sun...

dr croubie

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Re: Venus transit
« Reply #21 on: June 06, 2012, 06:53:32 AM »
If venus is in the top part of the moon, is that because all of you guys are northern-hemispheres? My Venus was in the bottom-left corner of the sun (in Aus)

Here's two of my shots, at 1pm, so fairly high in the sky, about an hour before it exited (possibly the only cloud-free time all day, although I reckon the ones with cloud look better).
First is 250x2x2=1000mm, 1/1600s, possibly around f/8 (f/32).
Second is 180x2=360mm, 1/250s, probably f/5.6ish (f/11).

One thing I learned today was that the Zeiss Sonnar 180/2.8 with the Soviet 2x TC makes for some very lovely purple-glowing images wide-open...
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Re: Venus transit
« Reply #21 on: June 06, 2012, 06:53:32 AM »

jasium

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Re: Venus transit
« Reply #22 on: June 06, 2012, 06:56:23 AM »
Haven't had time to tweak in post yet, but a handful of mine are up at:
http://www.flickr.com/photos/jasium/sets/72157630064658904/

Taken with a small borrowed Meade scope (Thanks, Chris!), Baader solar film, and an aging 20D that apparently wants some sensor cleaning. :)

lol

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Re: Venus transit
« Reply #23 on: June 06, 2012, 07:52:54 AM »
If venus is in the top part of the moon, is that because all of you guys are northern-hemispheres? My Venus was in the bottom-left corner of the sun (in Aus)
If you saw Venus in front of the moon, I'd like to know where you were viewing it from as it wasn't on Earth!

The position of Venus would vary from your viewing point. Further complicated depending on certain types of telescope which may mirror the image in some or more axis...

Here's my little sequence. Times are UK BST.


5:06am No sign of Venus here... hang on, that's not the sun is it. Wrong direction!


5:11am The view looking in the right direction. Cloud...


5:22am I see you!


5:27am Although it had moved away from the low cloud, it moved into another band.


5:31am At last, a clear shot.


5:39am Making contact on the way out...


5:42am The kit in action.


5:54am Barely visible still... the sun went behind some thin cloud after this so I didn't catch the exact moment Venus disappeared.

Kit used:
Canon 7D and 600D.
Canon 100-400L and 15-85.
Baader solar film ND5 on the 100-400L.

I also took some video I might sort out later.

I also made one minor mistake. I forgot to pack an extender, which would obviously give a bit more coverage. I'll remember it for next time... :D
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epsiloneri

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Re: Venus transit
« Reply #24 on: June 06, 2012, 08:25:53 AM »
If venus is in the top part of the moon Sun, is that because all of you guys are northern-hemispheres?

Yeah, you can see on the sun-spot pattern how the Sun is oriented. It's great to see so many contributions from various part of the world! Some show the transit at sunrise, some at sunset, some upside down... When you see Venus like that, a tiny dot on the Sun, it is amazing to think that the planet is of about the same size as Earth. This could have been martians watching the Earth transiting the Sun.

Charlie

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Re: Venus transit
« Reply #25 on: June 06, 2012, 08:30:55 AM »
It was pretty cloudy in NYC but I manage to get a few breaks in the cloud. I picked up an Orion solar filter that normally is used on telescopes but I found a size that fit over the top of my flare guard nicely.

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smithy

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Re: Venus transit
« Reply #26 on: June 06, 2012, 08:36:42 AM »
It's very satisfying seeing the photos you've all taken - the transit occurred in the middle of my working day so I couldn't take a look unfortunately.
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TrumpetPower!

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Re: Venus transit
« Reply #27 on: June 06, 2012, 10:41:50 AM »
Here's my catch from the butte behind Tempe Diablo Stadium, overlooking the Valley of the Sun.

Cheers,

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Re: Venus transit
« Reply #27 on: June 06, 2012, 10:41:50 AM »

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Re: Venus transit
« Reply #28 on: June 06, 2012, 10:50:28 AM »
5DMIII, 300mm 2.8L w/2XIII, Mylar film filter

Ew

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Re: Venus transit
« Reply #29 on: June 06, 2012, 04:30:38 PM »
Great shots everyone.

I only had a 3 hour window, 2:45 of which was either under rain or heavy cloud cover.

By the time the sky cleared up, there was no Venus to catch.

Fishing for the sun through sporradic cloud holes (high wind) allowed for a bit of fun though.

Sunset was after 10pm, Venus was gone by 5pm.

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Re: Venus transit
« Reply #29 on: June 06, 2012, 04:30:38 PM »