I enjoy looking at astrophotography, so I have decided to start making some of my own. I made my first attempts this past week. One issue I had was the focus, I took a lot of photos and the realized I had the focus completely wrong. I understand the basic concepts but when it comes to specific setting of aperture, ISO, length of exposure, etc. I'm basically just playing with it till I get something usable. I suppose focus should be infinity.
Here are a few images that came out usable. Nothing spectacular but I'm happy I got a few images I could at least use. My camera is a Canon 40D and I was using my Sigma 18-200mm OS lens. All the photos have been manipulated in photoshop a bit to make them more appealing to my eye.
Thanks Toxic Coolaid, I have fixed this post so the thumbnails link to fullsized images when clicked.
First up is the Moon, Saturn & Spica*. (ISO 1250, 10 seconds at 18mm, f/7.1)
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Here we have Orion (ISO 100, 105 second exposure at 18mm, f/3.5)
Finally here is Polaris and the chimney of my parents' home (ISO 800, 28 minutes & 43 seconds at 18mm, f/14)
Any feedback is of course appreciated. *Spica, not Sirius, thanks Toxic Coolaid.