October 01, 2014, 12:44:17 PM

Author Topic: Stars above.  (Read 26532 times)

dcm

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Re: Stars above.
« Reply #90 on: January 31, 2014, 11:23:49 PM »
Have fun.  I got mine in the summer so the weather was a bit nicer to practice.  But I did have to stay up later to get dark skies -_-
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Re: Stars above.
« Reply #90 on: January 31, 2014, 11:23:49 PM »

charlesbanke

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Re: Stars above.
« Reply #91 on: February 04, 2014, 10:11:44 PM »
1Diii, 1Diin, 60D, 70-200 2.8 L IS ii, 17-40, 40 pancake, 50 1.4, some flashes and pocket wizards

Click

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Re: Stars above.
« Reply #92 on: February 04, 2014, 10:17:50 PM »
Great shot charlesbanke. Nicely done.

wearle

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Re: Stars above.
« Reply #93 on: February 08, 2014, 09:10:31 PM »
To all,

Here's my first and second attempt at star trails.  In my first attempt, I made the mistake of too short of an exposure.  It would generally be somewhat light polluted near Battle Mountain, but fog and low cloud had enveloped the lower terrain blocking out all the light pollution coming from the Columbia Basin.  My exposures should have been two minutes, but they were only 20 seconds.  :(  On my second attempt, I raised my exposure to one minute since it was the longest I could go without blowing out the illuminated fog below over Pendleton, Oregon.  I believe it's a better attempt than the first, but still room for improvement.  A couple of vehicles went by and down Emigrant Hill during a couple of the exposures.  I'm not quite sure if the illuminated foreground hurts or helps the image.  What are your thoughts?

Thanks for looking,

Wade

Jack Douglas

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Re: Stars above.
« Reply #94 on: February 09, 2014, 01:16:47 AM »
Well Wade, I like them, but I'm new to this too.  Just keep on experimenting!  I think car trails are cool too.

Jack
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emag

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Re: Stars above.
« Reply #95 on: February 09, 2014, 02:44:29 AM »
6D on a 2000mm f/10 telescope with 2xTC.   Seas of Tranquility and Serenity, crater Plato and the nearby Alpine Valley, craters Archimedes and Eratosthenes, crater Copernicus at sunrise.  ISO320, 1/25. 

Larger view - macro extenders (total 65mm) added between 2xTC and camera body to increase the effective focal length.  ISO640, 1/80.

Taken evening of 8 February, first decent night in two weeks.

Jack Douglas

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Re: Stars above.
« Reply #96 on: February 10, 2014, 12:43:24 AM »
I know I am an anomaly in the world of photographers but I can't help getting into construction projects.  Having purchased the iOptron Skytracker and not having a ball head I got to wondering how a gimbal could work, so I have made this mod.  I can now use it, provided it's not too cold like the present -20 C and I'll report on how it works out.  I'm also hoping that with a simple tapered block I could do horizon shots without ball head or gimbal with perhaps more rigidity and increased payload. 

It's a fixed angle for my location so that's a potential problem for future consideration.  I'm pretty sure working off the now level platform will be an advantage.  We shall see.

Jack
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Re: Stars above.
« Reply #96 on: February 10, 2014, 12:43:24 AM »

Jack Douglas

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Re: Stars above.
« Reply #97 on: February 16, 2014, 01:01:25 AM »
A small addition to the last post.  It became apparent that the iOptron had a serious problem with the rotaional mount at the very bottom - a single small thumb screw that would prevent rotation but still allowed significant wobble.

The modification added here along with a thin shim washer in the latitude joint have really made a difference (it tensions up easier and with less rotation of the handle).  The base rotation is now prevented by 3 external contact set screws and is solid like a rock.  The mod consists of a sleave pressed over the original base and for security I used 3 setscrews along with the friction press fit over the base.

There is slight interference potential so I used bent screws, since they hang down when free and only require 1/4 turn to lock the base.

And, I am crazy enough to now try the 300 X2 with great care, but still no clear night and warm temp for that.

Jack
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pedro

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Re: Stars above.
« Reply #98 on: February 16, 2014, 05:48:02 AM »
30D, EF-S 10-22/ 5DIII, 16-35 F/2.8 L USM II, 28 F/2.8, 50 F/1.4, 85 F/1.8, 70-200 F/2.8 classic,
join me at http://www.flickr.com/groups/insane_isos/

Alexiumz

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Re: Stars above.
« Reply #99 on: February 16, 2014, 06:35:30 AM »
An eight hour exposure at Ingleborough, Yorkshire, UK.

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yorgasor

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Re: Stars above.
« Reply #100 on: February 16, 2014, 10:04:19 AM »
I finally got to find some real dark skies down in Moab, UT.  It's almost frightening how dark it is when the moon goes down (especially when you're foolishly hiking without a flashlight):

This is the kind of light you get at moonset, my new favorite time!:

Water, Snow and Stars by yorgasor, on Flickr


Stars over Moab by yorgasor, on Flickr


Arches Entrance by yorgasor, on Flickr

The last of the moonlight, shining up in the clouds as it goes down:

Stars at Moonset by yorgasor, on Flickr

The moon fully down, waaaay dark.  Fortunately I was close to my car at this point.

Delicate Arch Viewpoint by yorgasor, on Flickr

Jack Douglas

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Re: Stars above.
« Reply #101 on: February 16, 2014, 12:35:59 PM »
Oh, I love the last posts, guys.  Any advice you're willing to give to someone who's yet to do anything like this.  I'll be out any day now but just in my yard where it's not particularly scenic, but it's not city.  What lenses and times, exposure etc., is always helpful.

I presume the Sky Tracker is not at all useful in doing the shots with landscape due to motion blur?

Jack
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tron

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Re: Stars above.
« Reply #102 on: February 16, 2014, 03:27:25 PM »
I presume the Sky Tracker is not at all useful in doing the shots with landscape due to motion blur?
Jack
Exactly! But your 6D is capable of crazy ISO  :)

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Re: Stars above.
« Reply #102 on: February 16, 2014, 03:27:25 PM »

Alexiumz

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Re: Stars above.
« Reply #103 on: February 19, 2014, 12:32:57 PM »
Oh, I love the last posts, guys.  Any advice you're willing to give to someone who's yet to do anything like this.  I'll be out any day now but just in my yard where it's not particularly scenic, but it's not city.  What lenses and times, exposure etc., is always helpful.

I presume the Sky Tracker is not at all useful in doing the shots with landscape due to motion blur?

Jack

My go-to exposure for dark skies is f/2.8, 30" and 1600 ISO. Start with that and see how it looks; you may need to lower the ISO with the given light pollution or lower the shutter speed if you start to see stars trailing (if that's not the intended effect!)

You won't need/can't really use a sky tracker when shooting a landscape (it's more for deep space photography) unless you superimpose the foreground/landscape from a separate exposure.
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Jack Douglas

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Re: Stars above.
« Reply #104 on: February 19, 2014, 01:29:31 PM »
Thanks Alexiumz!

Jack
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Re: Stars above.
« Reply #104 on: February 19, 2014, 01:29:31 PM »