Marian's Astrophotography Experimentation

Astrophotography isn't just photography through a telescope. It is usually defined as any photography of the objects in our sky and beyond.

I have not done much, and with the clear night tonight, I wandered outside with an almost empty battery (don't do this), my camera, remote shutter release, and tripod.

First obstacle: seeing in the dark. It is a good idea to know your camera's layout before trying this at home. Since my camera is brand new, I fumbled around A LOT.

Second, try to convince the husband to turn off the TV. Failing that, draw the drapes as best you can.

Third, find a low light pollution area. My nearest large city is about 20 miles away. Should be fine, right?

Fourth, watch out for roof obstacles. Hard to do with a deck.

Fifth, make sure you don't have a hot tub on the deck. It will always come on while you are shooting.

Sixth, do this with a fully charged battery. Because after finally figuring out your focus, a partially charged one will pick that time to fail.





Tongue
« Last Edit: February 17, 2010, 09:53:50 PM by wildmaven »
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Quote
Husband watching TV


[grin]

OK if you used a longer lens(200mm or so), you would have eliminated, the local lights.

Your shutter was too long, ummm we are rotating really REALLY fast.

Next time try 200mm or more, f8, ISO 800 and run "B" for around 10 seconds.

without a tripod tracking system you're gonna get lines on any shot over 10-20 seconds unless its the moon you're shooting then I believe its more like 6-10 seconds.

« Last Edit: February 06, 2010, 03:44:44 PM by BobEdens »
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Between two evils, I always pick the one I never tried before. -- Mae West

Chattanooga Portrait Photographer BobEdens.com

lol, Marian you are so funny. I love how you pointed out the things in the picture, very interesting! Especially the light pollution. I live smack dab in a large city, the 13th largest metro area in the U.S. to be exact Smiley and I keep telling my husband about how bright the stars were in the little farm community where I grew up (285 people).
I wonder how far from a city you have to be. My dad has a really awesome telescope and I thought we could just drive up the mountain a ways.
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I love everything having to do with the sun, moon, and stars. I've tried to take pictures like this too and get the same "effect" with the motion of the stars. Which is kinda cool that the movement can be captured, but not always what people want to see in a picture. They are beautiful though. I love how in the second one everything is curving, and it actually looks like it is rotating around you rather than just moving across the sky. And they both have the colors of the stars in them! I love that it shows up!

I saw a photo in a book once (it was like a paperback coffee table book that was being sold in a camera store) with pictures of the stars in it. I think those might have been taken with a telescope because of the detail and the amount of stars. It was a complete blanket of stars covering the sky. It took my breath away. I've wanted to be able to do that ever since. I've noticed that now even just looking at the sky normally, I can see more stars because I know the potential of what is there to see.

Anyway, back on topic... I love them. :-)
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Some more experimentation tonight.

I used a handheld spotlight to paint light on the trees. I went up to 1600 ISO, but I'm not liking the noise at all, so I'm going to start heading back down into the lower ISOs next.

30sec, f/8, 1600 ISO

*runs back downstairs to play*
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 lightstars.jpg - 204.73 KB - 74 views
 airplanestars.jpg - 141.01 KB - 71 views
« Last Edit: February 17, 2010, 09:56:02 PM by wildmaven »
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Okay... brrrr... it's cold out there!

Everything else is the same as my last post, but I went to ISO 400.

Saw a satellite, too, but didn't catch it.
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 starsiso400.jpg - 196.79 KB - 65 views
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the trees look cool, that was a good idea.
I hate noise too, and especially in pictures like this where the pin points of lights are the subject.
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I agree, the trees look really cool. I really like the new ones. I think they look really awesome!
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With the meteor shower in full swing, I am hoping to capture some tonight. Last night I went out, but was only able to spend 1/2 hour out on our deck. No meteors, and I need to play some more to get rid of noise.

3200 ISO, f/3.5, 18mm.

I read online yesterday that if you divide 600 by your focal length, that's the maximum time you can shoot before the stars become trails.

This was with my Minolta 7D. I started out with my 1.4 50mm lens, but couldn't get a wide enough field, so ended up switching to the 18-200mm. Tongue Tonight, I'll bring out the Nikon D90.

I hate shooting at 3200 ISO, so I hope to bring that down with the Nikon.
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 nometeor.jpg - 113.01 KB - 42 views
« Last Edit: August 13, 2010, 10:32:31 AM by Marian Murdoch »
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Pretty! Is that the milky way?
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Yep! I'd never seen the Milky Way until I moved out into the forest. I love sitting in the hot tub watching the stars move across the sky. Smiley
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Nice.
I saw it all the time growing up on a ranch in far north California. I love it.
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Wow, I just stumbled across a great site:

http://www.jshine.net/astronomy/dark_sky/

A dark sky finder!!
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