Digital Imaging to Capture the Night


Meade Pictor with all accessories in Meade carrying case. Although superficially this looks like a nice clean package, in reality it was a complete disaster. The mechanical shutter was awful, the CCD chip was terrible, the SCSI interface was awkward and clumsy, and the software was nearly unusable. The whole system crashed repeatedly, requiring a complete shutdown of both the computer and the camera, followed by a sequenced power-up cycle. I never did get the autoguider to work at all. After two years and many, many frustrating nights, I ultimately sold it on Astromart to some other poor unfortunate sole.

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Starlight Xpress MX7C one shot color camera with all accessories in Pelican carrying case. Visible from top left are: MX7C Camera, Optec 2" 3x focal reducer, Optec 2" 2x focal reducer, 12/120V power supply, Star2000 autoguiding controller, USB camera interface, and far too many coiled cables. In spite of its relative simplicity, this camera actually takes very good pictures. It utilizes a Sony interline CCD chip, which has a unique electron capture system that yields both a very low dark current and anti-bloom characteristics without a reduction in sensitivity. The individual pixels are colored with a patterned mosaic of cyan, magenta, yellow, and green filters. A small amount of cleverly applied arithmetic yields both a high resolution luminance image and a set of lower resolution RGB images. The color frames are, of course, always properly aligned with the luminance frame.

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SBIG STV universal camera, autoguider, and general purpose diagnostic tool. Although its low pixel count renders it a rather mediocre astronomy camera, this versatile device it is absolutely great at all the rest of its functions. As a stand alone autoguider, it is about the best on the market. In another of its modes, it can quickly give you numerical readout of both seeing and transparency. It can also be used to track the drift of a star for precise polar alignment. While doing a drift analysis, it will also display a graph of your scope's unguided periodic tracking error.

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Nikon CoolPix 950 2-megapixel digital camera for afocal imaging. Also shown are the Scoptronics Digi-T adapters. These devices are used in pairs, one for the camera, and one for the eyepiece. The camera adapter screws onto the filter threads and converts them to "female" T threads. These adapters are camera specific. The eyepiece adapter grabs onto the top of an eyepiece and converts it to "male" T threads. This is a universal adapter that will fit any eyepiece. To attach to an eyepiece, the rubber eye cup is first removed, then the adapter is put in place where the eyecup was. A set of three set screws lock into the eye cup ring. The two devices then screw together for consistent, reliable, and well collimated images.

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