DSLR Modification

回覆文章
頭像
cwlam
白矮星
文章: 803
註冊時間: 週一 03 8月, 2009 09:07
來自: Tin Shui Wai

DSLR Modification

文章 cwlam » 週二 18 8月, 2009 09:11

Hi, I am the beginner for astrophotography. May I ask why we need to modify the DSLR for astrophotography? Is it easy for modify by DIY?

頭像
funoooo
夸克星
文章: 7783
註冊時間: 週五 30 6月, 2006 16:34
聯繫:

文章 funoooo » 週二 18 8月, 2009 09:26

Because the filter of DSLR Camera will filter out a lot of Infra red color and almost this side of color. Thus, after modification, you will get very rich red and colorful photo.

頭像
Wah!!
夸克星
文章: 13264
註冊時間: 週一 15 3月, 2004 21:28
聯繫:

文章 Wah!! » 週二 18 8月, 2009 10:56

Because most of the deep sky nebula produce Hydrogen-alpha light (red), it will be filtered out by DSLR original UV/IR cut filter.

頭像
cwlam
白矮星
文章: 803
註冊時間: 週一 03 8月, 2009 09:07
來自: Tin Shui Wai

文章 cwlam » 週二 18 8月, 2009 13:08

Is that means once I modified the DSLR, it will affect our normal use for photographing? It can be DIY for modification?

頭像
xiaoer
白矮星
文章: 667
註冊時間: 週五 19 5月, 2006 19:37

文章 xiaoer » 週二 18 8月, 2009 13:41

cwlam 寫:Is that means once I modified the DSLR, it will affect our normal use for photographing? It can be DIY for modification?
1. Yes, since more light in the red side would enter the CCD/CMOS, the photos also look more red under AWB. Therefore you have to customize white balance manually. And you will get use to it.........

2. Yes, you can just cut and replace the filter in front of the sensor. Most of us are using Baader filter and of course you can use a plain glass with the same dimensions instead (it is said that the autofocusing may not function well if different thickness is used). The Baader filter could be bought from tan14 and many of us ask him to modify for us.

回覆文章

回到「天文數碼攝影入門 Digital Astrophotography ABC」

誰在線上

正在瀏覽這個版面的使用者:沒有註冊會員 和 1 位訪客