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LT
週六 09 6月, 2012 17:34
版面: 二手交易場 Second Hand Area
主題: FS:高橋 EM-1S赤道儀 + Tat's 6" F5 牛頓鏡
回覆: 6
觀看: 4965

FS:高橋 EM-1S赤道儀 + Tat's 6" F5 牛頓鏡

代友人出售此經典高橋單軸赤道儀EM-1S連原廠極軸鏡、平衡錘2個(1個原廠+1個銅製)、伸縮木腳和鋁箱全套(見附圖)。淨赤道儀全套,不連改裝的Vixen SX極軸鏡、不散賣。價HK$6500.

有意請給我PM。不導星的盲跟效果可參看以下相片影像。主要的拍攝資料可由file name中讀得。

備註:拍攝時用由我改裝的Vixen SX極軸鏡來對極軸,沒有任何star drifting方法再修正。

另可加購以下物件:
Vixen SX 極軸鏡連由我加工合EM-1用的轉接環 HK$1100.
LT
週二 29 5月, 2012 09:39
版面: 天文攝影 Astrophotography
主題: 陰那山 : M20
回覆: 77
觀看: 11784

Thanks so much noodle. 1. H694 個QE高 d ~77%(580nm) vs ST8300 ~55%(580nm), 2. ~20,000 Vs ~25,500 3. Dark Current ~ 0.002e/s (-10C) Vs ~0.02e/s(-15C) Readout noise ~7e rms Vs ~9.3e rms 4. 我用MaximDL ,兩隻ccd都 support ,運作正常,完全無問題 5. driver 都系SBIG 好dd,sbig 容易安裝小小,其本上無分別。不過新STF 一定要用 driverchecker64安裝,另外maxmd...
LT
週一 28 5月, 2012 13:15
版面: 天文攝影 Astrophotography
主題: 陰那山 : M20
回覆: 77
觀看: 11784

Hi noodle, Maybe you are the 1st one to have experience on this camera. Could you share us with your experience on that new SONY chip based camera by comparing with ST-8300? 1. sensitivity 2. well depth 3. noise level 4. image capturing software coming with the camera, if any 5. operation on both ca...
LT
週四 17 5月, 2012 15:57
版面: 天文攝影 Astrophotography
主題: M51 及 SN2011dh
回覆: 5
觀看: 1700

The tracking seems no good. Maybe you can get the refund from them.

OT: You can pick up your SXP from this Saturday evening or another date. Please call me for the arrangement.

LT
LT
週三 21 3月, 2012 13:46
版面: 天文話題 Everything about Astronomy
主題: Seeing condition
回覆: 1
觀看: 2285

Seeing condition

Seeing condition can be qualified in either of FWHM or arc second. For me, I get used to describe the seeing condition in the unit of arc second. For example, seeing of 1" = very steady air. If in FWHM, how much will it be equivalently? There should be some conversion between these two units, but I ...
LT
週三 21 3月, 2012 13:35
版面: 天文話題 Everything about Astronomy
主題: Angus Lau 與湯博士的天文講座
回覆: 127
觀看: 36236

Thanks Bingsze to arrange such a talk for us, and Thousand thanks to the 4 speakers being so kind to share their experience with us in the talk, and lastly Thanks Dr. Tong to book such a convenient place (at least to me) for us to get gathering and learning from the speakers. Hope next workshop comi...
LT
週三 14 3月, 2012 23:44
版面: 天文攝影 Astrophotography
主題: NGC2070 蜘蛛星云
回覆: 12
觀看: 2895

That's a beauty. However, on my monitor, the background shows a bit of blue cast. But that may be just an issue of my monitor uncalibrated. I think the seeing should be above average during the imaging session on this object. But I still believe a 16803 chip is a much better matching-up with the foc...
LT
週三 14 3月, 2012 23:26
版面: 天文攝影 Astrophotography
主題: Is it too red?
回覆: 28
觀看: 5181

Attach one more resized stack image @Tiff for your playing. Please feel free to play with it and show up us of your effort for sharing.

Enjoy.

LT
LT
週三 14 3月, 2012 23:21
版面: 天文攝影 Astrophotography
主題: Is it too red?
回覆: 28
觀看: 5181

That is really so good good to see more versions from some of the great magic hands here. Please don't stop. Keep playing with my images and posting them up with some description or explanation on what you had done with your "hands". Among those versions, I would prefer XR250's and universe24's more...
LT
週三 14 3月, 2012 23:01
版面: 天文攝影 Astrophotography
主題: Some previous shots taken in Australia
回覆: 9
觀看: 2550

Wah,

Could you tell us what you had done on my images?
LT
週二 13 3月, 2012 23:00
版面: 天文攝影 Astrophotography
主題: Some previous shots taken in Australia
回覆: 9
觀看: 2550

anyone 寫:[Good Job]

有時我這樣想,不太刻意的去做後期處理,反而可以保留更多原始的美;不知同意否 ? :)

Agree!

Hope you have a fruitful trip next week.
LT
週二 13 3月, 2012 22:58
版面: 天文攝影 Astrophotography
主題: Some previous shots taken in Australia
回覆: 9
觀看: 2550

Please feel free to try your version on my images.
LT
週二 13 3月, 2012 22:56
版面: 天文攝影 Astrophotography
主題: Is it too red?
回覆: 28
觀看: 5181

Welcome to have a play with my image, if you are interested. I think that is a good way to share with each other. There is no comparison with Dr. Wang's film images, which are of hours of signal. For me, personally I like the red colour (Ha light) of emission nebula presented in film image very much...
LT
週一 12 3月, 2012 22:37
版面: 天文攝影 Astrophotography
主題: Is it too red?
回覆: 28
觀看: 5181

Is it too red?

How do you feel with this one, with dark and flat calibrated ? Please criticize as sharply as you can.

Just about 28min signal in total , insufficient of course.

Thanks.
LT
週五 09 3月, 2012 23:37
版面: 天文攝影 Astrophotography
主題: Some previous shots taken in Australia
回覆: 9
觀看: 2550

Some previous shots taken in Australia

I have lots of RAW images unprocessed, but I just don't have too much motivation to process them. It is mainly because I don't know how to "cook" them well, and I sometimes find it is quite time wasting in doing so. If we could turn back the clock, I would prefer smiling on the slide images. Attache...

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