M57 made in YL with 6F4 newtonian yesterday

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LT
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註冊時間: 週日 17 8月, 2003 23:20
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M57 made in YL with 6F4 newtonian yesterday

文章 LT » 週一 09 9月, 2019 23:51

Attempt to see the coma correction of TV paracorr on a 6" F4 Newtonian. Seemed the back focus being not so matched with the original design.

L=5x30s, taken with 6" F4 + TV Paracorr + 1600 cooled cmos camera @690mm F4.6

Almost full frame image
M57_5x30s_L_Jpeg.jpg
M57_5x30s_L_Jpeg.jpg (511.6 KiB) 已瀏覽 111 次
and cropped image
M57_crop_5x30s_L_Jpeg.jpg
M57_crop_5x30s_L_Jpeg.jpg (247.01 KiB) 已瀏覽 111 次

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Eddy So
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Re: M57 made in YL with 6F4 newtonian yesterday

文章 Eddy So » 週二 10 9月, 2019 20:53

[Good Job] [Good Job]

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