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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 27 Oct 2010 (Wednesday) 15:45
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You don't need a telescope

 
proletsearch
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Feb 14, 2012 10:25 |  #796

Cool moon shot, gabebalazs! I like the details...and wow: 1200 mm...I have only tried at 200mm (external link) but 200mm, even on a crop body is not enough...Could you please share the name of the program you are using for the stacking process?


Canon EOS 600D gripped, Canon EF 70-200 f/2.8L IS Mark II - Youtube (external link):: Flickr (external link)

  
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tkerr
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Feb 14, 2012 11:41 |  #797

proletsearch wrote in post #13895849 (external link)
Cool moon shot, gabebalazs! I like the details...and wow: 1200 mm...I have only tried at 200mm (external link) but 200mm, even on a crop body is not enough...Could you please share the name of the program you are using for the stacking process?

I don't believe he used any software for stacking. What he stacked were two 2x Tele-Converters to achieve the focal length he got.

But if you want software for stacking astronomy images you can try Deep Sky Stacker.
http://deepskystacker.​free.fr/english/index.​html (external link)

Or for lunar and planetary images you can try Registax.
http://www.astronomie.​be/registax/ (external link)

You can also check out wxAstrocapture.
http://arnholm.org …/software/wxAst​roCapture/ (external link)

If you have Photoshop you can stack with that as well. If you have Photoshop CS5 Extended you can use Smart Object Stack Modes.


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Beardy
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Feb 14, 2012 15:15 as a reply to  @ post 13894790 |  #798

Todd, Tony and Tim. Thanks for the feedback. I love the tips and will put them to good use as soon as these clouds get out of here.

B




  
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Phil ­ Scott
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Feb 17, 2012 12:38 |  #799

Just a couple of shots from the back garden when it was briefly clear last night.

Didn't quite nail the focus I don't think and there is a little smearing of cloud. Next time it is clear I will be taking a drive away from the city (fairly close to London and a few big towns) and stack some shots.

IMAGE: http://farm8.staticflickr.com/7037/6890370441_185da60a17.jpg
IMAGE LINK: http://www.flickr.com …/60843428@N05/6​890370441/  (external link)
Night Sky 2 (external link) by MrPeriPeri (external link), on Flickr

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Night Sky 1 (external link) by MrPeriPeri (external link), on Flickr



  
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S.n.a.f.u.
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Feb 17, 2012 13:17 |  #800

tkerr wrote in post #13858838 (external link)
Typically a good starting figure for shutter speed before trailing will be noticeable is to divide 500 by the lens focal length. Or if you're using a Full Frame Camera try 600 by the focal length. It's not perfect but it will get you close.
For Example with the 8-16mm Sigma @ 8mm on a camera with an APS-C crop sensor you can go as long as 62 seconds
With the other lens at 17mm you can only go as long as about 30 seconds.

how did you come up with the 500 or 600 divided by focal length figures? I'm just curious as i still don't know much about this.

I'm going to try this evening if its a little warmer to get out with the 7d and either the 17-50 or the 8-16 or both.

i got a really perfect view of orion and a few of the planets (cant remember if its mars of venus).


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proletsearch
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Feb 18, 2012 08:10 |  #801

tkerr wrote in post #13896314 (external link)
I don't believe he used any software for stacking. What he stacked were two 2x Tele-Converters to achieve the focal length he got.

But if you want software for stacking astronomy images you can try Deep Sky Stacker.
http://deepskystacker.​free.fr/english/index.​html (external link)

Or for lunar and planetary images you can try Registax.
http://www.astronomie.​be/registax/ (external link)

You can also check out wxAstrocapture.
http://arnholm.org …/software/wxAst​roCapture/ (external link)

If you have Photoshop you can stack with that as well. If you have Photoshop CS5 Extended you can use Smart Object Stack Modes.

Thank you for the detailed information. Very helpful!


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nellyle
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Feb 19, 2012 16:08 as a reply to  @ proletsearch's post |  #802

After a few years of visual astronomy, I thought I'd have a go at a picture! I had to limit myself to lots of 2 second exposures as the 200 2.8 showed up star trails soon after, and apart form not quite nailing focus I'm reasonably happy with this!

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Also managed this a couple of weeks ago...

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5D3, 7D2, 1D3, 40D, 14 f2.8 Samyang, 17-40 L, 28-80 L, 70-200 2.8ii L, 200 2.8ii L, 200-400 L, 1.4 ii,
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saiph
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Feb 20, 2012 16:01 as a reply to  @ nellyle's post |  #803

I also got some more shots :)

M31 Andromeda Galaxy

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Andromeda (external link) by saiph (external link) on Flickr

And a cropped version of it. Still fooling around with a proper balance between noise reduction and sharpness :-)

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Andromeda cropped (external link) by saiph (external link) on Flickr



  
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VisualUniverse
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Feb 21, 2012 00:27 as a reply to  @ saiph's post |  #804

Nice work, Saiph!


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Brudei
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Feb 24, 2012 20:10 as a reply to  @ VisualUniverse's post |  #805

Hi there

Been on these forums about a week, some really awesome photos.

Really liked all your astrophotography so took a bash myself. Lots of improvemnet needed of course but I'm pleased with my first efforts.

Orion

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Jupiter, Venus and the moon.
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Both taken on a Canon 500D f4, kit lens (18mm it says in the details) 8 second exposures, ISO 200 for Orion and Iso 800 for the second.


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Todd ­ Lambert
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Feb 24, 2012 20:26 |  #806

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saiph
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Feb 26, 2012 07:14 |  #807

VisualUniverse wrote in post #13934038 (external link)
Nice work, Saiph!

Thanks for that feedback :-)

@Todd, Very nice picture...that scenery is awesome ! Though the exposure time seems a tick too long for the stars :)




  
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Todd ­ Lambert
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Feb 26, 2012 16:09 |  #808

Thanks, yes.. I went a bit too long, it was so dark out there, I couldn't get the exposure I wanted and I was pointing south, so of course I should have been even less.. 8-(




  
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Jim ­ Shaffer
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Feb 26, 2012 19:19 as a reply to  @ post 11177741 |  #809

Sirius, Orion, and Taurus with trees (and airplane vmad)
17-40mm L at 17mm, 5 seconds exposure at ISO 6400


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kwscore
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Feb 27, 2012 08:23 |  #810

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5D II|S 14 2.8 |Σ 35 1.4|
D4 |14-24 |
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You Dont Need Telescopeexternal link

  
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You don't need a telescope
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