Saturday, April 13, 2013

The Small Magellanic Cloud - a first attempt at stacking and processing

My trip to Australia was not just to catch the total solar eclipse, but it was also an opportunity to do some astro-photography, something I'm completely new at. The most I've done so far is take photos with my camera and a tripod.

This is my first attempt at post-processing and stacking. The image below is a stack of 11 images of 140 seconds, coming up to a total of 25 minutes and 40 seconds of exposure.

Small Magellanic Cloud
A few details about this image:
Date and place: Nov 7th, 2012, Australian Dessert (near Uluru)
Camera: Canon 450D
Lens: Canon 50 mm, at 50 mm and f/2.0
Exposure: 11 frames x 140 sec
ISO: 800
Mount: EQ 3.2

And now I'll tell you a little bit about what I did in the post-processing stage.

First, I had to stack the light frames, the darks and the biases. A great software to do that is DeepSkyStacker, but seeing as I had never done it before, I needed help. Doug German has some great tutorials on youtube. I recommend his other tutorials as well: they're easy to follow and very helpful.
I also watched his Basic Processing in Photoshop tutorials and I used this info to process the image after stacking it.

So, basically, after stacking, I did some levels, curves and applied some filters in Photoshop. So far, this is the extent of my knowledge regarding post-processing. I plan to get back to this photo after I've learnt more.

See you soon!


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