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hellstormde — Partial Moon HD
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Published: 2013-07-15 19:47:57 +0000 UTC; Views: 1143; Favourites: 49; Downloads: 19
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Description
This image is a complete rework of one of my previous submissions. I've reused the stacked raw files and sharpened them using blind image deconvolution (BID). No other sharpness-enhancing techniques have been used.In all the image consists of 36 smaller images. Those images have been generated by taking uncompressed movie sequences (as seen here: [link] ) and then aligning each frame so the features match. This way the airy noise called "seeing" is being lowered by a huge amount. Finally after sharpening all images have to be aligned manually and the edges of each sub-image need to be smoothed. Some white-balancing and color/brightess-correction has been done using Lightroom.
The video footage itself has been recorded using a Philips SPC 900NC (frame size 640x480) mounted on a 250/1250mm (10 inch) newtonian telescope on dobson mount.
Full Size Download is recommended to see all the detail.
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Comments: 9
do you use a special mount for that Philips camera? I bought the same camera to use on my scope. I was wondering about doing the conversion.
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I've directly mounted it in the focuser. I've used the metal sleeve of an old eyepiece and glued it onto the the camera. You just need to make sure that it sits perfectly diagonally over the CCD chip. Of course with the original lens of the camera removed.
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ok. I know at one time you could order an adapter or a kit to convert it to eyepiece size. I didn't buy the adapter and kind of lost interest in the thing.
did you remove the (UV?) filter as well?
that was a cool video. I see you were dealing with a lot of heat-waves.
what do you use for video capture? do you capture in AVI?
I might get it back out and see what I can do with it.
thanks
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The IR-filter is on the original lens of the camera. So without the lens there is also no IR-Filter. I've recorded anything with wxAstroCapture into an uncompressed AVI file. There are also two tools for the camera called wcrmac and wcctrl. With wcrmac you can program the camera firmware to output raw images without compression and sharpening. That's pretty useful for recordings. The framerate is ways slow (5 to 20 fps), but you have ways more detail in the single frames. The second one (wcctrl) is used to control all camera paremeters like exposure time, gain, etc...
All in all it is pretty easy to do without having to invest a lot of money. Btw... here's an image of the camera mounted to the scope: images.hellstorm.de/dob_tou.jp...
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