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ASTRO: Helluva CCD chip
Check this out:
http://www.fairchildimaging.com/main/area_486.htm or for sheer size: http://www.fairchildimaging.com/main/area_595.htm can you imagine a 3+ inches per side 81 megapixel sensor? Zowie, that must be one expensive chip. |
#2
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ASTRO: Helluva CCD chip
I like my dinky little MX716 camera because it reads out all 361 K
pixels in about 5 seconds. The readout time on that Fairchild beast is 5.6 minutes. Heck, you could almost develop a roll of film in that time. Besides, what do you do with 15 micron pixels? Clear skies, Dennis Persyk Igloo Observatory Home Page http://dpersyk.home.att.net Hampshire, IL "Richard Crisp" wrote in message m... Check this out: http://www.fairchildimaging.com/main/area_486.htm or for sheer size: http://www.fairchildimaging.com/main/area_595.htm can you imagine a 3+ inches per side 81 megapixel sensor? Zowie, that must be one expensive chip. |
#4
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ASTRO: Helluva CCD chip
"Dennis Persyk" wrote in message m... I like my dinky little MX716 camera because it reads out all 361 K pixels in about 5 seconds. The readout time on that Fairchild beast is 5.6 minutes. Heck, you could almost develop a roll of film in that time. Besides, what do you do with 15 micron pixels? I use 24x24 micron pixels in my Dream Machine camera (TK1024 sensor, 1024x1024, ~1" on a side) on my c14 at 4430mm focal length. I like the results I get with it. here are a few samples: http://www.rdcrisp.darkhorizons.org/...la_ha_page.htm http://www.rdcrisp.darkhorizons.org/...ha_n2_page.htm http://www.rdcrisp.darkhorizons.org/...close_page.htm http://www.rdcrisp.darkhorizons.org/...m_sii_page.htm http://www.rdcrisp.darkhorizons.org/...hao3b_page.htm http://antwrp.gsfc.nasa.gov/apod/ap030908.html etc I think big pixels are great. They are really fast. With my C14 and my AO7 used with the beam splitter, the 24x24 micron pixels of the TK1024 work fine. |
#5
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ASTRO: Helluva CCD chip
"Richard Crisp" wrote in message ... Check this out: http://www.fairchildimaging.com/main/area_486.htm or for sheer size: http://www.fairchildimaging.com/main/area_595.htm can you imagine a 3+ inches per side 81 megapixel sensor? Zowie, that must be one expensive chip. the 81Mp is probably more of a compromise than the 16MP , due to the smaller pixel size. Most very large professional cameras seem to use around 13-15um pixel sizes, like the QUEST , OMEGA Prime etc . As far as cost goes, I'd be surprised if a couple of 81MP chips cost more than a whole mosaic of 115MP made up of 2MP chips . |
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