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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: 275

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: 267

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 267 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: 236

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: 188

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 188 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: 381

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: 389

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: 408

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 408 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: 316

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: 194

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 194 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: 288

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 288 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: 218

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: 229

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 229 次
LT
週四 25 10月, 2018 23:25
版面: 天文攝影 Astrophotography
主題: 玩玩 HDR -- M42 taken with 6" 牛牛
回覆: 2
觀看: 220

玩玩 HDR -- M42 taken with 6" 牛牛

曾嘗試在PI內用 HDRComposition 和 HDRMT 玩玩 HDR,但仍未掌握好,於是改在PS內玩玩,看看效果怎樣,初步掌握到一點點。
M42_6F4_100Da_HDR_PS.jpg
M42_6F4_100Da_HDR_PS.jpg (410.04 KiB) 已瀏覽 220 次
LT
週四 25 10月, 2018 00:27
版面: 天文攝影 Astrophotography
主題: 6" F4 牛牛
回覆: 5
觀看: 397

6" F4 牛牛

帶 8" 牛牛上山、上飛機去攝星,不是沒可能,只是要多付很多$$和體力。但帶 6" 牛牛,相對地,可能性就高得多。當然,赤道儀就不能太重型了。待這支 6" F4 牛牛 OTA 再優化後,我就會帶這支自己組裝的 6" F4 牛牛 + Vixen AP mount 上山、上飛機去攝星。 這支 6" F4 牛牛的主鏡不是一塊優質拋物面鏡,但我要求不高,攝星效果 acceptable to me,一分餞一分貨也。 Taken with this 6" F4 newtonian + MPCC3 + LPS + 100Da @PTC in 2016 Stack of two sets of exposur...
LT
週二 23 10月, 2018 08:41
版面: 天文攝影 Astrophotography
主題: 再補拍過
回覆: 5
觀看: 387

再補拍過

2016年11月,往台灣攝星及首次出席翠峰星趴,但天意弄人,不斷下雨+密雲,3晚行程,只得約1小時拍攝時間!!!

在PI內重新處理
Taken with !00Da + EF180mm F3.5L macro @F3.5
Total exposure = 11x360s @iso800
Autoguided with Vixen AP mount @photoguider mode

只可惜鏡頭質量不佳(天文攝影領域),唯有12月中(2018)用Vixen Baby Q 再補拍過。
Orion-belt_Nov2016_100Da_iso800_11x360s_TW.jpg
Orion-belt_Nov2016_100Da_iso800_11x360s_TW.jpg (1023.51 KiB) 已瀏覽 387 次

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