本帖最后由 0003f 于 2011-9-1 13:12 编辑
回复 41# linkage
这里有几张外国爱好者用228L拍摄的作品,星点很棒
capella observatory的作品
CCD: SBIG STL-11000M
Image Type, Orientation: LRGB-Composite, North is at 12:00h
Exposure time: L: 3x600 sec., R: 3x600 sec., G: 2x600 sec., B: 2x600 sec., all 1x1 bin
Exposure date: October, 8th. 2010
Location: La Palma, Canary Islands, Spain
Filter: SBIG 2" L filter of LRGB filter set for STL
Instrument: Canon 200 mm lens 1:2.8 at 3.5 mounted on Super-Polaris DX
著名天文摄影师eder ivan的作品:
- instrument: Canon EF 2.8/200mm lens operated at F/4
- camera:
home-modified Canon EOS 5DmkII (Baader UV/IR filter inside)
- mount: SkyWatcher EQ6 + Boxdörfer DynoStar
- guiding: modified 9x50mm SkyWatcher finder scope (50/180mm), Lacerta-MGen stand alone autoguider
- exposure time: 30x2,5 min @ ISO 1600
- location, date: Hakos astrofarm, Namibia (1835m asl); 2010.05.11.
- observing conditions: transparency: 8/10, seeing: 7/10, temp.: +12°C
Canon EF 2.8/200mm lens operated at F/4
- camera: home-modified Canon EOS 5DmkII (Baader UV/IR filter inside)
- mount: SkyWatcher EQ6 + Boxdörfer DynoStar
- guiding: modified 9x50mm SkyWatcher finder scope (50/180mm), Lacerta-MGen stand alone autoguider
- exposure time: 23x2,5 min (57,5 min total) @ ISO 1600
- location, date: Hakos astrofarm, Namibia (1835m asl); 2010.05.07. |