Showing posts with label Venus. Show all posts
Showing posts with label Venus. Show all posts

Sunday, May 08, 2016

Mercury Transit of the Sun Coming May 9, 2016

Venus transit of the sun June 5, 2012
There will a a transit of Mercury across the face of the sun, as seen from earth, on May 9, 2016.  This article on timeanddate.com can tell you when the mercury transit may be available from your location.  It also provides links to information on proper eye protection!

When the planet Venus was scheduled to pass in front of the sun in early June 2012 I wanted to capture the event, but I didn't want to simply record a dark spot in front of a bright one.  So I decided to place earth-bound objects in front of the sun to capture the Sun, Earth and Venus in the same shot.  And why not... the next opportunity to capture a Venus transit across the face of the sun wouldn't come for another 105 years!

My setup for the Venus transit enabled me to shoot it at 400mm:
  • Canon EOS 5D Mark III 
  • EF 70-200mm f.4 IS L lens 
  • 2X III Teleconverter
  • Solar film for photographing the sun
Since I was including foreground objects but wanted to catch Venus and the sun as well, depth of field was a concern, so exposures were captured at f/32, 1/500 second, ISO 200.  That's with the solar filter reducing incoming light.

The setup I'm considering for the Mercury transit will enable me to shoot it at 640mm effective:
  • Canon EOS 70D 
  • EF 70-200mm f.4 IS L lens 
  • 2X III Teleconverter
  • Solar film for photographing the sun
This time I'll may track the sun and go for a composite photo showing the path of mercury across it.  In that case I could use an f-stop like f/11 to reduce any image softening from diffraction, so something like f/11, 1/2000 second, ISO 100.

Be careful if you try to capture photos of this event.  The sun can fry your sensor, so don't leave the shutter open in live view for long.  


I'm going to go get a camera or two set up and focused now!

"After centuries of trying, only photographic technology could measure the ‘Transit of Venus’ and tell us our position in the solar system." - +Royal Observatory Greenwich



Monday, December 07, 2015

Moon, Comet and Venus Continue Their Dance

Comet C/2014 US10 Catalina (blue-green fuzzy dot to the left), the moon and Venus to the right
I predicted last week that the viewing would get better all week for Comet Catalina, with an interesting configuration in the sky with the moon and Venus joining the comet this morning (above).  The three celestial bodies played hide and seek for hours after they rose, then the hazy cloud cover seemed to close, so I caught a few final exposures before picking up my tripod and heading inside.  Fortunately the very last few frames did let all three shine through the clouds just enough that I could show them to you here.

The 14% crescent moon was a lot brighter than the comet, but it'll only be an 8% sliver tomorrow morning, and its rise will follow Venus and the comet, so comet photography will be good before the moon rises, then you can try for all three again as the moon rises.

The image above was captured on a Canon 5D Mark III and EF 85mm f.1.8 lens and cropped from the larger field of view.  The 85mm lens should just fit the three objects again tomorrow, or I might go to 70mm for a wide shot like this.  For shots of the comet only, I'll probably use my Canon EOS 70D on a sky tracking mount, perhaps with a Canon EF 70-300mm f.4-5.6 IS lens to get an effective focal length of up to 480mm.

The screen shot to the right shows what the configuration will look like tomorrow.

Thursday, June 18, 2015

Moon, Venus Jupiter Will Line Up Tonight


Tonight we'll have the Moon, Venus and Jupiter lining up in the evening twilight sky, with a 9% crescent moon about 9% high in the sky around 9 pm (in a mid-California latitude).

Yosemite Valley isn't normally where I would go to see expansive views of the night sky, but on February 24, 2012 I was fortunate to arrive at Sentinel Bridge over the Merced River right before the moon set behind the valley rim, with Venus and Jupiter lined up above. I was able to capture this frame with the moon and Venus reflected.

Tomorrow evening 
the moon will be brighter and set later, forming a triangle with Jupiter and Venus.  With the evening sky also darker, it will be reminiscent of the Venus, Jupiter Moon triangle I caught last August:

Photos of the Moon, Venus and Jupiter Conjunction August 23, 2014
http://activesole.blogspot.com/2014/08/photos-of-moon-venus-jupiter-conjunction.html

Here's a photo of those three members of our solar system rising on the eastern horizon:



Then Saturday night the moon will be a brighter, wider crescent, and set later in a flatter triangle configuration, more reminiscent of this one earlier this year:



The easiest event of the next 3 nights to catch with earthly terrain will be the more linear configuration tonight, while twilight light still lights up your foreground landscape.

At the very end of the month, on the night of June 30, Venus and Jupiter will pass within 1/3 of a degree of each other, less than the diameter of the moon.  It will be similar to the conjunction (appulse) that I caught last year on August 18 on my Canon 70 with EF 70-200 mm lens and 2X teleconverter, but this time Venus will appear as a crescent.

Jupiter Venus Conjunction, with Four Moons

Thursday, August 21, 2014

Venus Jupiter Conjunction August 18 to Add Moon August 23

Venus plus Jupiter with four of its moons before dawn August 18
Venus - Jupiter Aug 18
The Venus -  Jupiter Conjunction was a rare event to catch Monday morning before dawn, as they slowly rose above the horizon as dawn approached.  It's always great to be out in the early morning, as many animals are active and others start to stir.  Two great horned owls gently called back and forth.  Black bears have been in our neighborhood at night lately gorging on peaches, and plums, blackberries and apples are starting to add to their buffet as well.  A group of coyotes were howling in the small orchard down the street, no doubt harassing a bear getting in the way of their hunt for rabbits and quail.  It was nice to have some moonlight for illumination, so I'd be able to see a bear approaching if I heard one leaving the orchard in my direction.  I kept a flashlight nearby to alert any bears to my presence, to avoid an awkward encounter.  Being so well fed our bears are large.  They're not overtly aggressive and they'll generally run away from people, but it's still a good idea not to startle one at close range.
As the week progresses Venus and Saturn remain close all this week, with the crescent moon arriving in their vicinity on the mornings of August 22, 23 and 24. Their closest encounter will be on Saturday the 23rd, with the two planets and the moon forming a triangle before dawn, 7 degrees on each side.

Update Friday morning, August 22:  The moon lined up with Venus and Jupiter this morning.  The moon will drop next to Venus and Jupiter tomorrow morning before dawn, to form a triangle.  Venus rose today at 4:53, so for best results, start looking by 5 am.  Where I plan to shoot tomorrow, all three celestial bodies should be above the horizon by 5:10 or so.  The times will be similar for other mid northern latitudes, with small adjustments for your position on the earth and in your time zone.

Plan for an interesting composition for the conjunction tomorrow using any of these four astronomy apps:

Tutorial on Moon Photography Planning

http://activesole.blogspot.com/2013/10/tutorial-on-moon-photography-planning.html  


The rest of the story:

As I shot Venus and Jupiter this morning there were large, fresh bear prints on the ground, and half of an apple that the bear carried 1/2 mile but couldn't finish.  The bears start arriving late at night this time of year, but as they compete for fruit in neighborhood fruit trees, they start to come earlier and earlier.

This large bear climbed up a neighbor's tree last year when we arrived to take his picture.  He growled at me at first, but stopped when that tactic didn't result in our departure.  On this night, our neighbor had called us at 8 pm to tell us that there was a huge bear which "looks like a bison", his back scraping the branches of the apple trees.  He definitely was well fed, and is probably back for more feasting this year.

Monday, August 18, 2014

Venus - Jupiter Conjunction at Dawn Today


Venus and Jupiter put on a show in the sky this morning as sunrise approached.  As seen from earth these two bright planets appeared to pass within 0.3 degrees of each other in the sky.

For the next shot I used a crop sensor camera to get a little more effective zoom out of my lenses:
Canon 70D, 70-200mm f/4 IS L lens, 2X teleconverter
400mm focal length x 1.6 crop factor = 640mm equivalent


I uploaded one of my shots to Flickr, and +Universe Today had already blogged it moments later.  Thanks +Nancy Atkinson!
Here's a link to the blog post by Universe Today:

Saturday, August 09, 2014

Transit of Venus in Front of the Sun, June 2012

The planet Venus (black dot) passes in front of the sun, as seen from earth
When the planet Venus was scheduled to pass in front of the sun in early June 2012 I wanted to capture the event, but I didn't want to simply record a dark spot in front of a bright one. So I decided to place earth-bound objects in front of the sun to capture the Sun, Earth and Venus in the same shot. And why not... the next opportunity to capture a Venus transit across the face of the sun wouldn't come for another 105 years!

There will a a transit of Mercury across the sun on May 9, 2016.  This article on timeanddate.com can tell you when the mercury transit may be available from your location.  It also provides links to information on proper eye protection!

"After centuries of trying, only photographic technology could measure the ‘Transit of Venus’ and tell us our position in the solar system." - +Royal Observatory Greenwich


#astrophoto2014 #astronomy #science #astrophotography

Tuesday, May 28, 2013

Venus, Jupiter, Mercury Conjunction (1080p, 30fps)



The planets Jupiter, Venus and Mercury are close together in the evening sky this week, so every night I've been trying to capture them together on the horizon in the twilight hours before they set. The first night the clouds were too thick. The second night I was shooting sunset in high winds at Mono Lake with the Sierra Nevada as a high western horizon, so I caught a few pictures of the planets, but they set too quickly to capture a time-lapse video. The third night was just right, relatively clear to the west, I was in a high shooting position with an apparent horizon lower than my position (less than 0 degrees elevation), and fortunately that was Sunday May 16, the night when they'd be closest together, forming a tight triangle.

There was still wind to deal with so I changed position a few times to minimize it. I could only use one camera because I had loaned my daughter one of my quick release plates the day before and it was still on her camera back home. There wasn't a lot of light and I was shooting with a 2X teleconverter on my 70-200mm lens at close to 310mm, so my aperture was limited to f/8, forcing me to bump up the ISO to minimize shutter speed in that wind. Fortunately I worked out all the trade-offs in time to capture about four hundred frames, enough to create this time-lapse video. 


Here's how my four days of effort to capture this event turned out:


Pursuing the Venus, Jupiter, Mercury conjunction on May 24, 2013.
May 24 from Lake Tahoe


Pursuing the Venus, Jupiter, Mercury conjunction on May 26, 2013. Too high of a horizon at Mono Lake!
May 25 from Mono Lake

Pursuing the Venus, Jupiter, Mercury conjunction on May 26, 2013, just right with a low horizon.
May 26 from Monitor Pass













Pursuing the Venus, Jupiter, Mercury conjunction on May 27, 2013. Too cloudy over Lake Tahoe!
May 27 from Lake Tahoe

Wednesday, February 29, 2012

Astronomical Events Coming in March 2012

To get the best possible results with my astrophotography, I try to plan ahead to shoot as many astronomical events as I can. Here are some of the opportunities you'll have in the next month:

March 3/4: Mars at Opposition.  Mars will be as close as it gets to the earth, and will rise in the evening as the sun sets.
March 5: Mercury may be visible shortly after the sun sets through March 12, but on March 5 it reaches it maximum distance from the sun.
March 7: The nearly-full moon will rise just before sunset. Mars will rise right behind the moon in the evening sky.
March 8: Full moon.
March 9: The nearly-full moon will set just after sunrise.
March 10 - 20: Venus and Jupiter Conjunction
March 12: Arguably the best day of the Venus - Jupiter conjunction, as Jupiter will be just above Venus.
March 21: Thin crescent moon rises shortly before sunrise.
March 22: New Moon. March 21-24 will be good nights for star trail photography!
March 24: Thin crescent moon sets shortly before sunset.
March 24-25: Conjunction of Venus, Jupiter and the crescent moon.

I'll be out shooting with 25-30 of my photographer friends in Anza Borrego State Park and Death Valley National Park in the March 2-10 timeframe, and soon I'll be announcing photowalks for April, May and June.  The best place to catch my announcements will be on Google+:
http://www.Gplus.to/JeffSullivan