1999/04/08(UT)
Ls = 121.4, De = +16.5, Dia = 14.8"
17h26m54s(UT), CM = 176.3, 11 Flames composite
18h05m00s(UT), CM = 185.6, 10 Flames composite
18h32m28s(UT), CM = 192.3, 17 Flames composite
19h01m22s(UT), CM = 199.4, 11 Flames composite
19h36m38s(UT), CM = 208.0, 8 Flames composite
Telescope : C11 (SC) D=280mm fl=2800mm
Camera : Minolta DimageEx1500 Digital Camera
taking lens removed
Effective F No.: 43 (Or18mm Eyepiece Projection)
Filter: IR cut & Lowpass built-in the camera
Obs.site : Mozuhonmachi Sakai-City Osaka Japan
Exposure : 1/8 sec
Seeing:3/10--5/10 Trans 3/6
Image Processing:
- the Maximum Entropy Method deconvolution after composite of the original taking images (the leftmost images)
- Enhanced the leftmost images with the unsharp masking method (2nd left). The color of these images are simulation of naked eye.
- Enhancing the Blue channel layer images with contrast adjustment. of the leftmost images for easy detection of atmospheric phenomena (3rd left)
- Hue of the 3rd left images is inverted (the rightmost images )
Remarks:
- The shape of the North Polar Cap is changing, because of cloud over the North polar area ?
|
青色強調画像はこちら
(JPEG 142KB)
|