有 2061 筆資料符合您搜尋的條件

LT
週五 10 7月, 2020 21:54
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Leo Triplet taken with cooled CCD
回覆: 203
觀看: 37613

Re: DSO 遺照集 -- Leo Triplet taken with cooled CCD

85. Leo Triplet taken with cooled CCD Taken with Vixen R200SS + MPCCIII + Atik 383L mono cooled CCD @PTC in 2017 @800mm F4 R=G=B=4x240s @binning 2x2, autoguided with Vixen SX2 mount Stacked in DSS with bias calibrated only Processed in PI and PS Why no dark was calibrated? It is because the sensor t...
LT
週五 10 7月, 2020 21:45
版面: 天文話題 Everything about Astronomy
主題: 何日可相見
回覆: 8
觀看: 255

Re: 何日可相見

Thanks for your appreciation.
LT
週三 08 7月, 2020 09:39
版面: 天文話題 Everything about Astronomy
主題: 何日可相見
回覆: 8
觀看: 255

Re: 何日可相見

一年一聚,今年難料,盼望十月,泡湯去了!

Single shot of 360s, unguided with Vixen photoguider
EF17-40mm F4L + 300Da in Gisborne in 2008 @17mm F4
Calibrated in DSS with 1 dark only
MW_Gisborne_2008.jpg
MW_Gisborne_2008.jpg (1.05 MiB) 已瀏覽 117 次
LT
週一 06 7月, 2020 23:34
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Leo Triplet taken with cooled CCD
回覆: 203
觀看: 37613

Re: DSO 遺照集 -- M42 taken with cooled CCD

84. M42 taken with cooled CCD Vixen R200SS + MPCCIII + LPS + Atik 383L mono cooled CCD @PTC in 2015 @800mm F4 R=G=B=3x240s @binning 2x2, autoguided with Vixen SX2 mount Stacked in DSS with bias calibrated only Processed in PI and PS Now, have known more tricks on imaging with CCD in Hong Kong, and s...
LT
週一 06 7月, 2020 10:26
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Leo Triplet taken with cooled CCD
回覆: 203
觀看: 37613

Re: DSO 遺照集 -- M45 taken with cooled CCD

83. M45 taken with cooled CCD Vixen VSD100F3.8 + LPS + Atik 383L mono cooled CCD @PTC in 2015 @380mm F3.8 LRGB = 6x360s : 2x360s : 2x360s : 6x480s, autoguided with Vixen SX2 mount Stacked in DSS with darks and bias calibrated Processed in PI and PS R channel is a bit out of focus, and so it results ...
LT
週六 04 7月, 2020 10:31
版面: 二手交易場 Second Hand Area
主題: Orion 1.25" mirror diagonal for sale
回覆: 0
觀看: 85

Orion 1.25" mirror diagonal for sale

購於美國天文店舖,曰本製作。若沒記錯,原價要 千多元港幣。買入後非常少用(<5次),鏡面條件非常良好。

HK$600.

有興趣者,請PM本人或貼文回覆,謝謝。
Mirror diagonal_Orion.jpg
Mirror diagonal_Orion.jpg (151.42 KiB) 已瀏覽 85 次
LT
週四 02 7月, 2020 20:00
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Leo Triplet taken with cooled CCD
回覆: 203
觀看: 37613

Re: DSO 遺照集 -- M106 wide field

82. M106 wide field Taken with Vixen VSD100F3.8 + Atik 383L mono cooled CCD @PTC in 2015 @380mm F3.8 LRGB = 20x240 s: R=G=B=5x120s @binning 2x2, autoguided with Vixen SX2 mount Stacked in DSS with darks and bias calibrated Very unfortunately, when combining LRGB in PI, one bright star failed to the ...
LT
週四 02 7月, 2020 19:50
版面: 天文攝影 Astrophotography
主題: 懶人攝星集
回覆: 103
觀看: 21401

Re: 懶人攝星集

[Good Job] [Good Job] [Good Job]
LT
週五 26 6月, 2020 12:08
版面: 天文攝影 Astrophotography
主題: DSO 遺照集 -- Leo Triplet taken with cooled CCD
回覆: 203
觀看: 37613

Re: DSO 遺照集 -- NGC6888

81. NGC6888

Taken with Vixen VSD100F3.8 + LPS + Atik 383L mono cooled CCD in TMS in 2016 @380mm F3.8
LRGB = 10x240s : 2x240s : 2x240s : 3x240s @-10C, autoguided with Vixen SX2 mount
NGC6888_2016_VSD_383L-MM_LRGB_-10C_TMS.jpg
NGC6888_2016_VSD_383L-MM_LRGB_-10C_TMS.jpg (1.28 MiB) 已瀏覽 147 次
LT
週三 24 6月, 2020 20:50
版面: 天文話題 Everything about Astronomy
主題: 何日可相見
回覆: 8
觀看: 255

何日可相見

不見一日,何只三秋;相思之苦,誰可共鳴。問君可有 "大飛",能載我往南去?

Cropped, 2 x 180s @iso1600, unguided with Vixen AP mount @photoguider mode
EF100mm F2.8L + 100Da @F4
LT
週二 23 6月, 2020 23:04
版面: 談天說地 Chatting Square
主題: 請推薦一個輕巧便攜的赤道儀?
回覆: 3
觀看: 155

Re: 請推薦一個輕巧便攜的赤道儀?

Or, this one, Vixen Polarie U, may fit your purpose.
Polarie_U.jpg
Polarie_U.jpg (78.41 KiB) 已瀏覽 120 次
LT
週二 23 6月, 2020 10:32
版面: 二手交易場 Second Hand Area
主題: Brand new NLVW 30mm for sale
回覆: 0
觀看: 129

Brand new NLVW 30mm for sale

原本買入這個 NLVW30mm (2" size) 目鏡是想配合13.1" F4.5 牛牛 和 VC200L 作深空目視觀測用,現因日後會用雙目裝置 (binoviewer) 作目視觀測用,所以放售。

全新並未使用過, 售 HK$950。

有興趣者,請 PM 本人或回覆貼文,謝謝。
NLVW30mm.jpg
NLVW30mm.jpg (331.84 KiB) 已瀏覽 129 次
LT
週二 23 6月, 2020 10:22
版面: 二手交易場 Second Hand Area
主題: TV paracorr for sale
回覆: 0
觀看: 1063

TV paracorr for sale

10多年前買入這個 TV paracorr 彗差修正器 (2" size),原本打算用於 13.1" F4.5 牛牛作深空天體目視觀測用。後因過於投入天文攝影而放下了目視觀測,就這樣長期存放防潮箱內被冷落。早幾年,曾想將它改造成攝影用途,配合F4 - F5牛頓鏡用。不過近年攝影熱誠大減,返回使用雙目裝置目視,所以決定再放售,好讓其他同好可更善用它。

全新並未使用過,鏡面鏡身的條件狀況光潔如新,售 HK$2200.
(參考: 全新TV paracorr 二代在美國OPT店售 US$486.01)

有興趣者,請PM本人或回覆貼文。
Paracorr_visual.jpg
Paracorr_visual.jpg (475.05 KiB) 已瀏覽 1063 次
LT
週一 22 6月, 2020 11:30
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: Partially solar eclipse on June 21th
回覆: 2
觀看: 103

Partially solar eclipse on June 21th

匆忙set up,對焦欠準,無quality可言,人有我有也
Group_20200621.jpg
Group_20200621.jpg (327.94 KiB) 已瀏覽 103 次
LT
週五 19 6月, 2020 22:42
版面: 天文攝影 Astrophotography
主題: 1st attempt on the Ring
回覆: 1
觀看: 97

1st attempt on the Ring

The SN ratio of the stacked image of the Ring in L channel seems much higher than that of the image taken with 100Da. After combining the color signal into the L channel, Try combining the color data taken with 100Da into the L channel to see if the resulted color image of the Ring is improved quite...

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