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LT
週五 15 2月, 2019 22:45
版面: 天文攝影 Astrophotography
主題: HDR version of M42
回覆: 1
觀看: 64

HDR version of M42

Try again on playing HDR in PS. Taken with Vixen AX103S + 0.7x reducer + 100Da @578mm F5.6 in 2003 @PTC Total exposure = 9x480s + 9x60s @iso 800 Autoguided with Vixen SX2 mount Firstly processed in PI with DBE, PCC tools and then final touch in PS for HDR composition and adjustment with Level, Curve...
LT
週五 08 2月, 2019 11:28
版面: 天文攝影 Astrophotography
主題: M42 project
回覆: 3
觀看: 118

M42 project

M42, an object I take every year in Hong Kong and have been imaging for more than 10 years. So, recently I started an attempt to combine all the images taken with different scopes and DSLRs, which I call it as M42 project, to see what the result will come out. That is the first attempt of combining ...
LT
週四 24 1月, 2019 12:56
版面: 天文攝影 Astrophotography
主題: Winter milky way taken in 2016
回覆: 1
觀看: 90

Winter milky way taken in 2016

極端天氣已加快頻率出現!去年袋鼠國已多處打破最熱紀錄,今年更再破紀錄中........ 有台灣同好會2月前往中部沙漠看紅石。OMG!!!午間超過50度的氣溫怎樣過??? 2016年復活節到過Tennant Creek,日間氣溫超過40度已感很辛苦。超過50度的,真不敢想像了。即使午夜前,氣溫也在30度以上。 單彈曝光240s @iso1250,no dark, bias and flat calibrated Taken with modified 5D2 + EF8-15mm F4L @15mm F4 Unguided with Vixen Polarie 這麼熱,沒有冷凍,熱訊與星星,已熔...
LT
週五 04 1月, 2019 09:56
版面: 天文攝影 Astrophotography
主題: M33 from PTC last year
回覆: 4
觀看: 366

M33 from PTC last year

All the RGB data were taken at 3 different nights last year. However, due to the unstable weather conditions with interference of crossing cloud, quality of each sub-frames varied frame by frame. Just want to see what the result would come out, and so didn't use sub-frame selector in PI to select th...
LT
週五 21 12月, 2018 22:59
版面: 天文攝影 Astrophotography
主題: 飛奔太空中
回覆: 3
觀看: 342

飛奔太空中

Taken with Vixen Baby Q (FL55SS + HD reducer kit) + 100Da @237mm F4.3
15 x 180s @iso1600, autoguided on comet with Vixen AP non-goto mount
Stacked and processed in PI

究竟46P有尾定無尾呢?
46P_15x180s.jpg
46P_15x180s.jpg (819.84 KiB) 已瀏覽 342 次
LT
週一 17 12月, 2018 23:20
版面: 天文攝影 Astrophotography
主題: Test shot of 46P
回覆: 2
觀看: 299

Test shot of 46P

Bad luck to me again. Stayed 3 nights in Taiwan last week but only had about 1 hr of cloudless sky in total for imaging. Taken with Vixen Baby Q + reducer HD kit + 100Da Single shot of 46s @iso1600 Unguided with Vixen AP non-goto mount No dark, bias and flat calibrated Processed in PS Comet_46P_46s....
LT
週三 05 12月, 2018 13:27
版面: 天文攝影 Astrophotography
主題: Super Nova in M77 taken in YL last night
回覆: 2
觀看: 231

Super Nova in M77 taken in YL last night

Conditions were very terrible. Cloud kept flying by and severe light pollution at that spot.

Taken with Vixen VC200L @1800mm F9
L channel only = 5 x 120s, autoguided with Vixen AXJ mount in RA direction only

Stacked and processed in PI with bias and dark calibrated only.
M77-SN_5x120s_YL.jpg
M77-SN_5x120s_YL.jpg (415.98 KiB) 已瀏覽 231 次
LT
週三 28 11月, 2018 10:19
版面: 天文攝影 Astrophotography
主題: M45 taken 2 years ago with 6" newtonian at PTC
回覆: 4
觀看: 417

M45 taken 2 years ago with 6" newtonian at PTC

Taken with DIY 6" F4 newtonian + MPCC III + LPS + 100Da @PTC 2 years ago 13x240s @iso400, autoguided with Vixen SX2 mount 600mm焦距 + APS-C sensor 相機,我個人覺得是拍M42、M45、M31、M8.....等等類似大少深空天體特寫照的最佳組合。 個人很喜歡用牛牛(newtonians)拍DSO,並不是因為那些十字光茫,而是因為很少有露水問題。遊擊攝影,特別是到海外攝影,"電" 是一個很大的問題。用發熱帶除露,會用去很多"電"的。另外,牛牛亦沒色差問題。 ...
LT
週四 08 11月, 2018 12:37
版面: 天文攝影 Astrophotography
主題: Bad luck again
回覆: 3
觀看: 430

Bad luck again

It was so clear, sunshine, and the sky was so blue in the morning 2 days ago. So, went to PTC to go on gathering the photon of M33. However, bad luck again. I arrived there together with cloud too and then left with much frustration. Tried the correction exposure ratio for each RGB channel but not s...
LT
週五 02 11月, 2018 23:05
版面: 天文攝影 Astrophotography
主題: M33 from PTC
回覆: 5
觀看: 442

M33 from PTC

Is it still worthy for combining L channel data into this RGB M33 ?

Taken with Vixen SD103S + HD reducer kit + 1600 MM-C @624mm F6.1 on Oct 30th
R=G=B=8x180s
M33_RGB_PI+PS.jpg
M33_RGB_PI+PS.jpg (920.08 KiB) 已瀏覽 442 次
LT
週五 02 11月, 2018 09:10
版面: 天文攝影 Astrophotography
主題: Film image of M8
回覆: 3
觀看: 351

Film image of M8

Old film image, new processing tool Taken with Vixen DED108SS astrograph + kodak E200 emulsion in 2007, manually guided with Vixen GP mount Preprocessed in PI with DBE, BackgroundNeutralization, ColorCalibration, Histogram, Curve, MLT., and then final touch in PS There should have no noise in a film...
LT
週四 01 11月, 2018 11:41
版面: 天文攝影 Astrophotography
主題: Fun with PCC applied on film image
回覆: 1
觀看: 204

Fun with PCC applied on film image

What will be happened when PCC in PI is applied on a film image for calibrating the color of stars?

Any thoughts about PCC could come out ?

Film image taken with E200 emulsion and Vixen DED108SS astrograph in Coonabarabran in 2007.
Fun with film image.jpg
Fun with film image.jpg (1.28 MiB) 已瀏覽 204 次
LT
週三 31 10月, 2018 11:34
版面: 天文攝影 Astrophotography
主題: 好天出動莫遲疑
回覆: 2
觀看: 304

好天出動莫遲疑

好揀唔揀,揀著個爛燈盞 (廣東俗語)

原本前晚都可取得 permit 去 PTC,但想多一點拍攝時間,最後選擇昨晚出擊,結果.......

透明度低左
高層雲多左
其後更吹勁風.....
M33_SD103S_L_12x120s.jpg
M33_SD103S_L_12x120s.jpg (479.72 KiB) 已瀏覽 304 次
LT
週一 29 10月, 2018 10:57
版面: 天文攝影 Astrophotography
主題: Crazy attempt
回覆: 3
觀看: 238

Crazy attempt

When the light pollution is so severe... the seeing was not so good... the ground kept vibrating.... Moreover the sampling as way over so much.... You might imagine what result would come out !!!!! LRGB image taken with VC200L @ f.l.=1800mm, F9 at my observation site in YL last night @ sampling = 0....
LT
週日 28 10月, 2018 00:40
版面: 天文攝影 Astrophotography
主題: HH(Ha)
回覆: 2
觀看: 245

HH(Ha)

實在有太多data閒置不理,偶然找到就隨意處理

Taken with Vixen 20cm F4 牛牛 + corrector PH @PTC
Ha channel = 5 x 360s
HH_Ha_PI.jpg
HH_Ha_PI.jpg (592.1 KiB) 已瀏覽 245 次

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