broadsword
Brigadier
So, it's 0.8m and not 1m. 0.5 is now so close. I wonder which company is making the lens. China manufactures many consumer products and I have not heard of high quality camera lens on the level of Canon or Nikon.
China's Space Program News Thread
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So, it's 0.8m and not 1m. 0.5 is now so close. I wonder which company is making the lens. China manufactures many consumer products and I have not heard of high quality camera lens on the level of Canon or Nikon.
China has several national institutes dedicated to researching and manufacturing space grade optics.
This is different from consumer grade optics.
The former needs only a very small number to be produced, quality can be carefully managed, time duration allowed for production is much longer, and cost/profit for such optics is not much a concern.
However, for consumer cameras/camcorders, you need mass production, high level of quality control of individual and final products, very tight production schedules, and profit is the only concern.
In short, China is able to produce highly sophisticated optics but is currently unable to produce them at such scale and consistent quality at even lower cost than Nikon and Canon that there's a chance to profit.
After all, even Americans do not have camera producers on par with Nikon/Canon, right? But that doesn't mean America does not have high resolution satellites.
My Dutch newspaper reminds its readers today that Yutu is still immobile at 17 meter from its startpoint, but that it is still alive after eight months and with its thermal conditioning handicapped by the failure it suffered. It continues to report about its parts successively failing and so contributing to the design of its successors.
Blackstone
Brigadier
Yutu was a good first try, and China space agency and industry gained valuable knowledge and experience. I'm sure Yutu2 will be bigger, more capable, and will not repeat problems on Yutu1.
antiterror13
Brigadier
The gap is getting closer and closer ... soon 0.25m will be achieved, maybe next year
broadsword
Brigadier
SamuraiBlue
Captain
There is three parts in resolution in digital/optic enhancement.
The optic lens, digital CCD, and lastly digital filter necessary to filter out atmospheric distortion.
Without all three it is not possible to enhance resolution.
antiterror13
Brigadier
and your point is ??????
Gao-Fen 1 was launched last Octobe and has a resolution of 2m. I don't think it'll be that quick to improve to 0.25m next year, but I won't be surprised if Gao-Fen 3 has a resoultion of 0.5m.
escobar
Brigadier
• GF-3 employs the CS-L3000B bus, it is configured with a multi-polarized C-band SAR (Synthetic Aperture Radar) instrument at meter-level resolution, the design life is 8 years. GF-3 is scheduled for completion of development and construction in 2015.
• GF-4 employs the GEO remote sensing bus,configured with a 50 m staring camera, operating from GEO (Geostationary Earth Orbit). GF-4 will provide an imaging area of 7000 km x7000 km with individual scene coverage (scenes of 400 km x 400 km), and with a capacity for high temporal resolution remote sensing monitor at minute-level. GF-4 has a design life of 8 years. GF-4 is currently well under development and construction and is scheduled to launch in 2015.
• GF-5 employs the SAST-5000B bus ,configured with six payloads, including a VIS and SWIR (Shortwave Infrared) hyperspectral camera, spectral imager, greenhouse gas detector, atmospheric environment infrared detector at very high spectral resolution, differential absorption spectrometer for atmospheric trace gas, and a multi-angle polarization detector. GF-5 has a design life of 8 years and is scheduled to launch in 2016.
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