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Astrophotography Archive
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Half Moon
This is a picture of the half moon from early in January 2009. This was taken with a Canon 10D through a Takahashi FS102 refractor at prime focus. -
5D Mark II Astrophotography Tests
There have been a lot of reports of the 5D's trouble with bright point lights. I recently updated to the new firmware (version 1.0.7) and took some test shots with the 5D Mark II and a Takahashi FS102 refractor. I also wanted to test out the sensitivity at various ISO values. All these pictures were [...] -
New Scans of Old Astrophotos
I recently had some of my old astrophoto slides scanned with a Noritsu slide scanner so I can put them into permanent storage and finally move into 100% digital photography. I've learned a lot about image processing and the tools are much better now than they were when I originally took the photos. There are three [...] -
M42 shot with a Canon 10D
It's been at least three years since I've done any astrophotograpy but last night I lugged out the equipment and shot a few frames. I only made it out as far as the driveway and the sky isn't very dark in northern San Diego but it's amazing what kind of results you can get [...] -
G11 Bearing Upgrade
This is a tutorial on replacing the bearings on the Losmandy G11 telescope mount. This may or may not improve the tracking ability. It's kind of fun to do anyway. The Losmandy G11 mount is a great piece of hardware. However, the included bearings seem to fall short when compared to the rest of [...] -
Adding A Set Screw
I have always been irritated that most adapters and extension tubes only come with a single set screw. This not only feels insecure when holding expensive eyepieces, but also allows excessive play burring astrophotography. I'm usually chicken about drilling into my equipment, but I finally added a second set screw to all my adapters and [...] -
Astrophotography Equipment
Takahashi FS102 Refractor This Apochromatic telescope provides very sharp images with no color fringed stars. When reduced to F/5.9 you get about 3 degrees of coverage in the sky. I prefer to take pictures of large, wide field objects and this is just about the right focal length for those objects. I also use the extremely [...] -
Combining LRGB Channels
Many astrophotographs are taken as multiple monochromatic photos that need to be combined into a color finished product later. Each photo editing package seems to have it's own method. This is a short review of what I have. -
Noise Reduction In Film Images
The idea behind this method is that the low-light areas of the photograph need to be smoothed in order to remove grain artifacts while the bright stars and nebulosity should remain unchanged. To achieve this in Photoshop you need to construct a mask for the Gausian Blur filter.