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This page presents examples of astrophotography through a 2" (50mm) lens.
Photographs Displayed On This Page Were Taken With Small Telescopes And
Telephoto Lenses No Bigger Than Two Inch Aperture. The Moon and Sun pictures
were taken through a 2 inch f/15 telescope with Jaegers optics. The comet
photographs were taken with an SLR 35mm camera using a 135mm telephoto lens,
mounted piggy back on a 6" Newtonian that had a clock drive.
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All of the pictures on this page except the Solar ones were taken with
conventional 35mm film. The Solar images were taken with a modified Quickcam
Express webcam. I use SLR cameras (Single Lens Reflex) because I can remove the
lens easily. My particular models are an Exa II, a Pentax K1000, and a Zenit.
The Exa's are no longer made but are still around. A good yet inexpensive
alternate choice would be a Zenit. These cameras have just enough capability
(both are SLR's), yet are simple and inexpensive.
Probably the best place to track down an inexpensive, used or even new SLR
is eBay
Stores . Don't over do it, an inexpensive SLR is perfectly
adequate for astrophotography. You just need through the lens focusing,
removable lens, and a reasonable range of shutter speeds.
For piggyback photography (camera with telephoto mounted aside telescope)
any camera would do, but SLR's make it easy to substitute a telephoto lens for
the regular one. A time exposure with a guided camera without a telephoto will
record stars well below what you can see, but it will also show a very large
field, even in excess of entire constellations.
Check out how to make a simple piggyback mount at Piggyback Mount.
The photographs of the Moon and planets on this page were done by replacing
the lens with an adaptor that is just a 1.25" snout. This snout fits into
a standard 1.25" focuser, making mounting of the camera easy.
The books I'm familiar with on this subject are Skyshooting by the R.
Newton and Margaret Mayall, and George T. Keene's Star Gazing with Telescope
and Camera. Neither are new, but both describe well how to use conventional
film cameras to get great photographs.
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Now-a-days, I would still recommend film cameras for inexpensive star
photography. For Lunar and Planetary, I like digital, because the computer
can be used to average many images, which helps reduce the effects of seeing.
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