Pixalo Photography Community

Go Back   Pixalo Photography Community > Photography Tutorials, Links and Guides > Tutorials and Guides

Tutorials and Guides: Discuss Stacking form space photo's!!!...Hello again, itís me back with another instalment of anorak for you to digest. Today I will try to explain ...
Welcome to the Pixalo Photography Community. As a Guest you are free to browse the site, but see what extras you get as a Member here.


Reply
 
LinkBack Thread Tools Display Modes
Old 21-08-2012, 13:39   #1 (permalink)
Rep Point Winner 07
 
Gary Bagshawe's Avatar
 
Join Date: Apr 2005
Location: Sheffield UK
Posts: 2,746
Gary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of light
Gary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of lightGary Bagshawe is a glorious beacon of light

Image edit - ASK
User's Gallery
Users Camera Equipment List
Stacking form space photo's!!!

Hello again, itís me back with another instalment of anorak for you to digest. Today I will try to explain in plain English how I do the image stacking for my milky way photographs etc. This is not a comprehensive guide and I will be the first to admit that I still have a hell of a lot to learn but it has taken me many long hours of trial and error to get to this point so thought I would spare you having to go through the same grief. I have only just scratched the surface of this stacking stuff and am learning more each time I use it.
So without any more rambling from me here we go.
First of all you will want to download a free piece of software called Deepskystacker
DeepSkyStacker - Free install on your computer and then reboot. There is a lot of help and information with the software but to get started it helps if you have at least a little insight as to what is what.
What the software does is help you to stack images whilst removing noise and other things you donít want like hot pixels etc to get you the best image possible with the least noise. It will also automatically align the stack of images taking into account the earthís rotation which is a lot better than tearing your hair out trying to do it in Photoshop.
Now to get the images to load into this wonderful piece of software.
When I go out I will take my first set of images in pretty much the same way as I described in the previous tutorial but will get an exposure and stick with it and take around 10 plus photographs with around a 3 second gap between them. After this I will leave the camera where it is and put the lens cap on. I will then repeat the procedure of taking photographs with exactly the same exposure for 10-15 more shots, The shots are called Dark frames. Next I will leave the lens cap on and change the shutter speed to the fastest my camera will go and take another 10-15 shots. These are called the bias or offset frames. In an ideal world I would then do the same again of a smooth flat white surface leaving the iso and aperture the same and letting the camera work out the shutter speed. This would give me 10-15 Flat field images but I have yet to work out how to do this in the middle of the peak district.
You can still use the stacking software without doing the darks, flats and bias frames but they do help reduce the signal to noise ratio in the final image. Remember we are taking long exposures one after another and things can get quite warm.
I will then photograph any more star fields I like and note down the frame numbers for later stacking. The darks flats etc you took earlier can be used for any stacks taken on the same shoot but you will need to shoot more each time you go out.
Now once you have the images loaded onto the computer (raw images if possible) have one folder with more inside it, one for the darks one for flats etc etc.
Now open the deepstarstacker software.
It is fairly self explanatory to be honest. Click on open darks and select them all, the same with bias and flats etc. When you open picture files and select them you will have to scroll down to them in the list and tick the check box next to each one.
Next click on register pictures and go and make yourself a cuppa. It will ask if you want to change any settings etc but leave well alone and let it do its thing.
When it is finished you be left with a rather dull boring looking image like this which will have been autosaved as autosave.tif

We now need to bring out all the detail that is there so we will need to open the tif up in Photoshop. (at this point I will make no apologies for my strange methods of processing things, we each do things in a different way and this is just my method of madness.)


We first have to change the 32 bit image to 16 bit so that we can work on it ĒImage- Mode-16bitĒ Next we can do several curves and levels adjustments to widen the histogram. Below is an image of my starting point for both. I usually do this 2 or three times each time stretching the histogram till it starts to get spikes.





I will then save the image and import it into Lightroom for the next set of adjustments.


Living near a major city causes some colour casting which can be adjusted using the temperature slider. I tend to make slight changes to exposure brightness blacks whites contrast etc till the image is looking something like below.


I will then export it as a 300dpi jpg and put the finishing touches to it in Photoshop.

Happy imaging and remember it gets cold out there so take some brandy only joking Take ammo dude, no sorry I meant hot chocolate!!!
__________________

Gary Bagshawe is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 21-08-2012, 14:51   #2 (permalink)
Pixalo Crew
 
grease spot's Avatar
 
Join Date: Jan 2011
Location: Westmalle, Belgium
Posts: 3,336
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of light
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Stacking form space photo's!!!

Wow ! That's useful stuff

Incredible transformation from almost nothing to a beautiful light show - excellent set of tips (now off to brew up some hot chocolate )
grease spot is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 23-08-2012, 13:09   #3 (permalink)
Growing roots
 
chrisa's Avatar
 
Join Date: May 2007
Location: Bournemouth
Posts: 8,223
chrisa is just really nice
chrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nicechrisa is just really nice

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Stacking form space photo's!!!

Great tutorial - Thanks very much.
chrisa is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 27-08-2012, 08:14   #4 (permalink)
Been here a while
 
Join Date: Sep 2010
Location: Near Guildford, Surrey
Posts: 486
PINNACLE is on a distinguished roadPINNACLE is on a distinguished roadPINNACLE is on a distinguished road

Image edit - ASK
User's Gallery
Users Camera Equipment List
Re: Stacking form space photo's!!!

Thanks for sharing both your tutorials are great.
PINNACLE is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stacking chrisa Macro Photography 1 28-10-2010 21:16
Automated Stacking... chrisa Macro Photography 7 08-10-2010 14:39
Stacking Question Richard-Williams General photography questions and answers 10 17-03-2010 09:08
Stacking order...Filters Boofers General photography questions and answers 13 12-08-2007 18:09


All times are GMT +1. The time now is 23:14.


vBulletin Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
ReviewPost & PhotoPost vB3 Enhanced, Copyright 2003-2014 All Enthusiast, Inc.
SEO by vBSEO 3.3.0
Copyright © 2006 - 2017 Pixalo.com

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196