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DSO 遺照集 -- NGC7000
Re: DSO 遺照集 -- M83 taken with 1600MM
107. M83
Taken with Vixen VC200L + reducer + cooled 1600MM @PTC in 2018 @1280mm F6.4
R:G:B=6x310s : 5x300s : 5x310s, autoguided with Vixen AXJ mount
So far the best image taken in Hong Kong, and hope I can shoot it again with even better result this year.
Taken with Vixen VC200L + reducer + cooled 1600MM @PTC in 2018 @1280mm F6.4
R:G:B=6x310s : 5x300s : 5x310s, autoguided with Vixen AXJ mount
So far the best image taken in Hong Kong, and hope I can shoot it again with even better result this year.
- M83_RGB_re-processed.jpg (1.4 MiB) 已瀏覽 1709 次
最後由 LT 於 週一 26 4月, 2021 19:59 編輯，總共編輯了 1 次。
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littleming
- 夸克星
- 文章: 3525
- 註冊時間: 週三 14 11月, 2012 16:23
- 來自: chaos
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Re: DSO 遺照集 -- NGC4565
108. NGC4565
Taken with Vixen R200SS + corrector PH + 1600MM @PTC @760mm F3.8
R:G:B = 3x240s : 4x240s : 3x240s, autoguided with Vixen AXJ mount
Stacked in PI with darks calibrated only
Cropped
Taken with Vixen R200SS + corrector PH + 1600MM @PTC @760mm F3.8
R:G:B = 3x240s : 4x240s : 3x240s, autoguided with Vixen AXJ mount
Stacked in PI with darks calibrated only
Cropped
- NGC4565_RGB_crop.jpg (1.14 MiB) 已瀏覽 1620 次
Re: DSO 遺照集 -- Swan
109. M17
A blend of L channel taken with Vixen ED115S + Atik 383L+ cooled mono CCD camera and color image taken with VC200L + 5Da @PTC in Hong Kong both.
L: 8x480s @885mm F7.7, color: 8x360s @iso500 @1280mm F6.4, both autoguided with Vixen SX2 mount
Stacked and processed in PI with darks calibrated only
The color image was taken at a very hot summer night, and so the thermal noise was really horrible. Luckily, the noise level is improved by quite a lot after the L channel image is merged, though the L-channel image is out of focus a little bit. If the L-channel image was calibrated with a good flat, the result would be much better.
L + 5Da
5Da
A blend of L channel taken with Vixen ED115S + Atik 383L+ cooled mono CCD camera and color image taken with VC200L + 5Da @PTC in Hong Kong both.
L: 8x480s @885mm F7.7, color: 8x360s @iso500 @1280mm F6.4, both autoguided with Vixen SX2 mount
Stacked and processed in PI with darks calibrated only
The color image was taken at a very hot summer night, and so the thermal noise was really horrible. Luckily, the noise level is improved by quite a lot after the L channel image is merged, though the L-channel image is out of focus a little bit. If the L-channel image was calibrated with a good flat, the result would be much better.
L + 5Da
- M17_crop_L-5Da.jpg (974.68 KiB) 已瀏覽 1606 次
5Da
- M17_crop_VC200L_5Da.jpg (1.15 MiB) 已瀏覽 1606 次
Re: DSO 遺照集 -- M13 in L channel
110. M13 in L channel
Taken with DIY 30cm F4 Newtonin + Vixen corrector PH + 1600MM in YL last year @1140mm F3.8
50x30s, autoguided with Vixen AXJ mount
Stacked and re-processed in PI with darks calibrated only
Can't believe the very tiny galaxy very close to the cluster (middle top) can be captured at my mother home in YL with a Bortle 9 sky most of the time in a year. Thanks to the rather high transparency at that night. The result should be much better if it was taken at PTC and longer exposure. Next time, revisit it for RGB channels.
Taken with DIY 30cm F4 Newtonin + Vixen corrector PH + 1600MM in YL last year @1140mm F3.8
50x30s, autoguided with Vixen AXJ mount
Stacked and re-processed in PI with darks calibrated only
Can't believe the very tiny galaxy very close to the cluster (middle top) can be captured at my mother home in YL with a Bortle 9 sky most of the time in a year. Thanks to the rather high transparency at that night. The result should be much better if it was taken at PTC and longer exposure. Next time, revisit it for RGB channels.
- M13_50x30s_YL.jpg (650.79 KiB) 已瀏覽 1453 次
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