www.astrocafe.hk

Date 4 Aug 2011
Time 9-11pm
Telescope: C9.25
Focal Ratio: F6.3
Camera: 300D
ISO:3200
Location: Shui Hau Observatory http://shuihau.hkas.org.hk
Mount: HEQ5
Guiding: SG4
Filter: CSL
Stacked by DSS

The noise is unexpectedly low with iso3200 & 300d. Any processing method used?

年前用David的350D拍，單張10分鐘的，效果也很好，當下的天文愛好者真幸褔了，數千元一部單反效果已這麼好：
download/file.php?id=360

有機會cyyek兄分享一下導星裝備的細節?