Diffraction Opinion

Astronomy and Scientific Imaging Solutions

How to Choose an Astronomical Imaging Camera

In 1949 the Hale Telescope on Mount Palomar was opened. At the time it was the largest in the world—and the most productive. But for decades afterwards, telescopes stopped getting bigger. Why? Economics and technology are one answer, but perhaps the real answer is the invention of the CCD camera. CCD cameras solved many of...

STL Camera – New Tricks

What is the top issue SBIG STL owners have? As you know, it is guiding behind the filters. Would you be surprised to learn there is now a cure?  Back in 2005, when skies were less light polluted and narrowband imaging was not as prevalent, the STL Research Grade cameras were renowned for versatility, reliability,...

“Eyeball Transplants” Give New Life to Old Sensors

Is your old camera suffering from the maladies of age? Slow camera downloads? Failed power supply? Shutter problems? Leaky chamber? Argon all gone? Drivers don’t work? Turning back the clock and rejuvenating an old favorite could be as easy as an SBIG sensor transplant. Our clean-room technicians will extract your good CCD sensor from its aging camera...

Part I: Fast without the furious: Why your SBIG CCD camera doesn’t have USB 4.0

There are lots of marketing claims about fast camera download speeds and ever-faster interfaces. It makes you wonder why your SBIG CCD camera doesn’t require a super-fast interface that races along the data highway into your computer. Why is this? It’s really two simple reasons:   Cable Length Sensor Readout Rate In Part I of this blog, we’ll explore...

CCD versus CMOS: Which is Better?

by Doug George. The Charge Coupled Device (known as a CCD) has dominated astronomy and consumer electronics for nearly five decades. That is changing. The Nobel prize winning CCD was invented in 1969 and became a mature technology after about 20 years. CCD cameras gained wide acceptance for still imaging, video, and photometric measurements, replacing the...

Flat Fields and Stray Light in Amateur Telescopes

(The Ugly Truth - Its more Complicated than you ever thought!) A lot of users struggle with flat fields that don’t work well, and leave gradients in their images, or hot spots, or other hard-to-process-out artifacts. As a result they have resorted to twilight flats and other techniques to get better results. In this paper...