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LT
週四 07 5月, 2020 08:53
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- Core part of milky way

Core part of milky way Taken with EF35mm F2 lens + 100Da in Lantau Island in 2016 @F4 5x240s @iso800, unguided with Vixen Polarie star tracker Stacked in DSS and processed in PI and PS That is a reprocessed version. Remember at that night the sky conditions were not so good as there was mist occassi...
LT
週一 04 5月, 2020 21:36
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- Eskimo

64. Eskimo Taken with Vixen VC200L + reducer + LPS + 100Da in PTC in Hong Kong in 2013 @1280mm F6.4 6x240s @iso800, autoguided with Vixen SX2 mount Stacked in DSS and processed in PI and PS with HDR applied Without doing any HDR, the object will look over. So, if re-visiting it this winter, the expo...
LT
週一 04 5月, 2020 21:25
版面: 天文攝影 Astrophotography
主題: 屯門星空 (30-04-2020)
回覆: 527
觀看: 139162

Re: 屯門星空 (30-04-2020)

[Good Job] [Good Job] [Good Job]
LT
週一 04 5月, 2020 00:42
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- Core of M31

63. Core of M31 Taken with DIY 30cm F4 Newtonian + paracorr + LPS + 100Da in PTC in 2015 @1380mm F4.6 21x240s @iso800, autoguided with Vixen AXD mount Stacked in DSS and processed in PI and PS with HDR applied That film product of TV paracorr (coma corrector) doesn't work well on correcting the coma...
LT
週六 02 5月, 2020 21:28
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M51 from TMS with ED80Sf

62. M51 from TMS with ED80Sf Taken with Vixen ED80Sf + reducer + LPS + 100Da @TMS in 2014 @510mm F6.4 7x360s @iso800, autoguided with Vixen photoguider in RA direction only M51_20140129_ED80Sf_reducer_100Da_iso800_7x360s_TMS.jpg Cropped image M51_20140129_ED80Sf_reducer_100Da_iso800_7x360s_crop_TMS....
LT
週五 01 5月, 2020 10:02
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M42 with DED108SS in 2010

61. M42 with DED108SS

Taken with Vixen DED108SS film astrograph + LPS + 300Da @PTC in 2010 @540mm F5
15x240s @iso800, autoguided
Calibrated with bias only in DSS
M42_20101229_DED108SS+300Da_iso800_15x240s_PTC.jpg
M42_20101229_DED108SS+300Da_iso800_15x240s_PTC.jpg (1.21 MiB) 已瀏覽 673 次
LT
週三 29 4月, 2020 11:38
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M27 stack of 2 sets of data from 2 nights

60. M27 (stack of 2 sets of data from 2 nights) Both sets of data were taken with Vixen AX103S astrograph + LPS + 40Da @824mm F8 13x180s @iso1600 from PTC in 2013 28x180s @iso1600 from YL in 2013 Stacked in DSS and processed in PS That should be one of my best M27 images taken with a 4" scope in Hon...
LT
週一 27 4月, 2020 21:05
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M31 stack of 2 sets of data

59. M31 (a stack of 2 sets of data from 2 nights)

5x360s @iso400 in 2010 + 16x210s @iso1600 in 2011
Taken with DED108SS + LPS + 40Da in PTC
M31_DED108SS_40Da_5x360_16x210s_stack.jpg
M31_DED108SS_40Da_5x360_16x210s_stack.jpg (1010.58 KiB) 已瀏覽 762 次
LT
週日 26 4月, 2020 09:56
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M31 HDR

58. M31 HDR version

Taken with DED108SS film astrograph + LPS + 40Da @PTC in 2011 @540mm F5
16x60s + 16x210s @iso1600, autoguided
Stacked in DSS and processed in PS
M31_20110717_DED108SS_40Da_iso1600_16x210s_16x60s_PTC_HDR.jpg
M31_20110717_DED108SS_40Da_iso1600_16x210s_16x60s_PTC_HDR.jpg (858.5 KiB) 已瀏覽 782 次
LT
週六 25 4月, 2020 17:54
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M16 and M22 with DED108SS

57. M22

Taken with Vixen DED108SS film astrograph + LPS + 40Da @PTC in 2010 @540mm F5
6x240s + 6x360s @iso400, autoguided and stacked in DSS
M22_20100810_DED108SS_40Da_iso400_6x240s_6x360_PTC.jpg
M22_20100810_DED108SS_40Da_iso400_6x240s_6x360_PTC.jpg (1.08 MiB) 已瀏覽 792 次
LT
週六 25 4月, 2020 17:50
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M16 and M22 with DED108SS

56. M16 with R200SS

Taken with Vixen R200SS + MPCC + LPS + 40Da @PTC in 2011 @800mm F4
6x300s @iso400, autoguided with Vixen SXW mount
M16_20110801_R200SS_40Da_iso400_6x300s_PTC.jpg
M16_20110801_R200SS_40Da_iso400_6x300s_PTC.jpg (1.1 MiB) 已瀏覽 792 次
LT
週日 19 4月, 2020 22:58
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- A tiny galaxy adjacent to M3

Besides very heavy light pollution, transparency was poor too . So it is really a big suprise to me that the tiny galaxy could be captured at my observing place with so short exposure.
M3_20200416_300F4_100Da_iso400_39x25s_wide.jpg
M3_20200416_300F4_100Da_iso400_39x25s_wide.jpg (857.42 KiB) 已瀏覽 869 次
LT
週六 18 4月, 2020 00:56
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Crab taken with 30cm newtonian
回覆: 162
觀看: 33748

Re: DSO 遺照集 -- M3 with 30cm newtonian from YL

55. M3

Taken with 30cm F4 Newtonian + Vixen 0.95x coma corrector PH + 100Da in YL last night (April 16, 2020) @1140mm F3.8
39x25s @iso400, unguided with Vixen AXJ mount
No darks, bias and flats calibrated in DSS
M3_20200416_300F4_100Da_iso400_39x25s_YL.jpg
M3_20200416_300F4_100Da_iso400_39x25s_YL.jpg (934.7 KiB) 已瀏覽 903 次
LT
週二 14 4月, 2020 22:36
版面: 自製天文儀器 diy Astro Equipment
主題: LT的 DIY 及 modified 天文器材配件相片集 -- Another component of 10" mirror cell
回覆: 15
觀看: 2303

Re: LT的 DIY 及 modified 天文器材配件相片集 -- Mirror cell for 10 inch Cassegrain

6. Another component of 10" mirror cell

Rework on it so as to reduce its weight.
Mirror cell_02.jpg
Mirror cell_02.jpg (505.88 KiB) 已瀏覽 1008 次

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