Melipal 发表于 2003-6-19 22:45

螺旋星云NGC 7293

Equipment
Meade 16in LX200 telescope operating at f/6.3
SBIG ST8E CCD camera with color filter wheel

L R G B color production was used to create this image.
Luminance = 60 minutes binned 1x1
Red = 10 minutes binned 2x2
Green = 10 minutes binned 2x2
Blue = 10 minutes binned 2x2

meteorobs 发表于 2003-6-20 18:40

奇怪？！

为什么还缺三少四的？？
像背心上的图。。。em11.gif

Melipal 发表于 2003-6-20 23:42

是四张照片拼起来的（想想HST的图都是什么样）
说明如下：
·This image is a mosaic of 4 frames stitched together. Thus the above exposure times are approximate for each frame.
·The image quality isn't perfect- but putting this together was a tremendous undertaking- especially balancing the color.
·One iteration of L-R deconvolution (sharpening) algorithm using CCDsharp was applied to the luminance image.

portiff 发表于 2003-6-22 16:07

大多数天文图片都是拼凑起来的吧
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