20100114sun

[xiaoer]

今日終於可以試新玩具LS75F，目視好正，但又發現有問題未解決：手頭上的拍攝工具350D和ToUCam都無法對焦。結果夾硬拆了blocking filter 後的extension tube，再用橡筋圈固定ToUCam才勉強對焦。下次會試試加barlow看看能不能移後back focus。不過在烈日當空的環境下，對焦、快門、光暗、對比全部都是胡亂設定，加上只用porta mount沒有tracking，回到室內才發現拍得一塌胡塗。
所以實在很佩服David及 egret34 等同好的毅力，拍出現想的太陽實在不易啊~~

[anyone]

thanks for sharing !

[willis]

Fully understood ur problem! It is quite hard to do accurate focusing under very bright environment! Anyway ur dual speed focuser should help a lot!

[sn-10]

Fully understood ur problem! It is quite hard to do accurate focusing under very bright environment! Anyway ur dual speed focuser should help a lot!

The problem is, you should be able to see the surface detail while focusing. So exposure exposure exposure! Try to look at your exposure setting again.

[Eddy So]

[xiaoer]

Fully understood ur problem! It is quite hard to do accurate focusing under very bright environment! Anyway ur dual speed focuser should help a lot!

The problem is, you should be able to see the surface detail while focusing. So exposure exposure exposure! Try to look at your exposure setting again.

多謝sn-10的貼士~~
我也是調較exposure until the surface detail is seen
不過我想willis 和我所講的困難是，在強光的環境下，很難看到notebook的畫面，所以我估我要找塊黑布蒙頭才能看清楚對焦情況。
另外想問問拍攝日珥時，是不是要先用正常exposure來對焦，然後加長exposure time？因為日珥好像比較暗，看得到橙皮紋，又看不到日珥了。還是我未對好焦才出現這種情況？
謝謝~~

[Wah!!]

另外想問問拍攝日珥時，是不是要先用正常exposure來對焦，然後加長exposure time？因為日珥好像比較暗，看得到橙皮紋，又看不到日珥了。還是我未對好焦才出現這種情況？
謝謝~~

因為兩者光度相差甚遠, 所以需要有高寬容度的CCD/CMOS拍攝, 或者透過不同曝光值再由數碼合成.

[sn-10]

Fully understood ur problem! It is quite hard to do accurate focusing under very bright environment! Anyway ur dual speed focuser should help a lot!

The problem is, you should be able to see the surface detail while focusing. So exposure exposure exposure! Try to look at your exposure setting again.

多謝sn-10的貼士~~
我也是調較exposure until the surface detail is seen
不過我想willis 和我所講的困難是，在強光的環境下，很難看到notebook的畫面，所以我估我要找塊黑布蒙頭才能看清楚對焦情況。
另外想問問拍攝日珥時，是不是要先用正常exposure來對焦，然後加長exposure time？因為日珥好像比較暗，看得到橙皮紋，又看不到日珥了。還是我未對好焦才出現這種情況？
謝謝~~

拍2張exposure唔同照片, 再合成。

[bingsze]

吸血鬼二號出場啦，

唔知三號幾時發作呢？

[David]

今日終於可以試新玩具LS75F，目視好正，但又發現有問題未解決：手頭上的拍攝工具350D和ToUCam都無法對焦。結果夾硬拆了blocking filter 後的extension tube，再用橡筋圈固定ToUCam才勉強對焦。下次會試試加barlow看看能不能移後back focus。不過在烈日當空的環境下，對焦、快門、光暗、對比全部都是胡亂設定，加上只用porta mount沒有tracking，回到室內才發現拍得一塌胡塗。

I am so happy to see that you are finally using that very fine filter.

Actually, egret and I didn't shoot under the sun. We shoot on the 6th floor corridor. The computer is in the shadow while the scope is under the sun. Our school is fortunate to have such a good position just outside the physics lab. You would have our results if you shoot at our place. Very little skills are needed.

[MOON TO]

幾好

[lewis]