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#40
by
northenarc
on 19 Aug, 2014 05:06
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Fantastic shot at the moment of ignition there.
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#41
by
Chris Bergin
on 19 Aug, 2014 05:28
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#42
by
Artyom.
on 19 Aug, 2014 08:38
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From Xinhua in English:
China launches HD Earth observation satellite
China successfully launched a high-definition Earth observation satellite into orbit on Tuesday, according to the State Administration of Science, Technology and Industry for National Defense (SASTIND).
The Gaofen-2 was launched from the Taiyuan Satellite Launch Center in north China's Shanxi Province at 11:15 a.m. Beijing Time. It was boosted by a Long March-4B carrier rocket.
It is China's most advanced high-definition Earth observation satellite, and is able to see a one-meter-long object in full color.
It will be used for geographic and resources surveys, environment and climate change monitoring, precision agriculture, disaster relief and city planning.
http://news.xinhuanet.com/english/china/2014-08/19/c_133568148.htm
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#43
by
Galactic Penguin SST
on 19 Aug, 2014 09:08
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#44
by
Lewis007
on 19 Aug, 2014 14:20
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Two YouTube videos for those (like me) who have difficulty in playing and recording the clips in the previous post.
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#45
by
input~2
on 19 Aug, 2014 14:25
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A second object has been catalogued by USSTRATCOM
2014-049B/40119 in 610 x 632 km x 98.02°
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#46
by
Galactic Penguin SST
on 19 Aug, 2014 15:00
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For the record, the exact launch time is 03:15:04.947 UTC.
(Source)The Chinese are touting GF-2's 45 km imaging swath (thanks to its twin 7 m focal length telescopes design and 35 degrees angular movement capability) as being the widest imaging swath satellite of its class in the world - which after consulting data from comparable satellites seems to be true (e.g. WorldView-2 and Geoeye-1 has imaging swaths of around 15-16 km; even the more agile Pleiades-1 only gets to 20 km). GF-2 also plans to have a longer lifetime - a minimum of 5 years and targeting 8 years.
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#47
by
input~2
on 19 Aug, 2014 15:22
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#48
by
northenarc
on 19 Aug, 2014 16:37
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Guess motorized transporters are not a priority, only 9,990 Kilograms.
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#49
by
russianhalo117
on 19 Aug, 2014 16:45
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For the record, the exact launch time is 03:15:04.947 UTC. (Source)
The Chinese are touting GF-2's 45 km imaging swath (thanks to its twin 7 m focal length telescopes design and 35 degrees angular movement capability) as being the widest imaging swath satellite of its class in the world - which after consulting data from comparable satellites seems to be true (e.g. WorldView-2 and Geoeye-1 has imaging swaths of around 15-16 km; even the more agile Pleiades-1 only gets to 20 km). GF-2 also plans to have a longer lifetime - a minimum of 5 years and targeting 8 years.
do you mind PMing that to Satori so that he can update the launch schedule.
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#50
by
Yarrah
on 19 Aug, 2014 22:34
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An interesting presentation about the operator of the GaoFen series (EOSDC-CNSA) and the rest of the GaoFen constellation.
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#51
by
input~2
on 20 Aug, 2014 11:52
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A third and fourth objects have been catalogued by USSTRATCOM:
2014-049C/40120 in 602 x 633 km x 98.04°
2014-049D/40121 in 353 x 613 km x 98.12°
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#52
by
input~2
on 20 Aug, 2014 12:51
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#53
by
Galactic Penguin SST
on 21 Aug, 2014 10:46
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#54
by
jcm
on 22 Aug, 2014 01:54
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#55
by
limen4
on 20 Sep, 2014 15:50
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Some more information behind the launch and GF-2 (in Chinese):
http://www.spacechina.com/n25/n144/n206/n214/c736667/content.html
http://www.spacechina.com/n25/n144/n206/n214/c736197/content.html
The first of these talks about working on the satellite at the site rather than shipping it back to Beijing - a detail which
suggests that the CS-L3000A bus is a CAST bus, something I had not seen confirmed before.
Do we know dimensions and mass of the satellite?
I looked for Ma Shijun, the leading engineer of the GF-2 mission in Internet. He is from CAST 501 institute and was involved in ZY-1 and HY-2 satellite design. Therefore It seems possible that the CS-L3000A bus is the formerly known Phoenix Eye bus.
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#56
by
Liss
on 20 Sep, 2014 20:15
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I looked for Ma Shijun, the leading engineer of the GF-2 mission in Internet. He is from CAST 501 institute and was involved in ZY-1 and HY-2 satellite design. Therefore It seems possible that the CS-L3000A bus is the formerly known Phoenix Eye bus.
He was commander (project manager) for the CBERS-2B and chief designer for ZY-1 №02C, both probably based on Phoenix Eye-1 platform (as opposite for Phoenix Eye-2 used in ZY-2 and ZY-3 even if now these designations are obsolete). By the way, Phoenix Eye is 凤眼 (Fengyan).
My personal hypotesis is that GF-2 combined ZY-2/ZY-3 platform with Yaogan 14 (JB-10) optical system. If the latter provides 0.80 m resolution from 628 km it would provide 0.60 m from 475 km which is quite a reasonable level. It also matches nicely with number of orbits to repeat track, distances between tracks and swath width.
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#57
by
input~2
on 28 Sep, 2014 15:33
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#58
by
Galactic Penguin SST
on 29 Sep, 2014 11:07
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#59
by
Satori
on 30 Sep, 2014 21:51
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