新手雙筒問題

love826

http://sites.google.com/site/superbinocular/

SAKURA 20-180倍(強) X100可變倍廣角高倍望遠鏡
依家適合新手用嗎???
我好想學睇星><

Bug

不適合啊...太大太重啦，變焦鏡睇星質素又差 (當年我都中過招，買過類似的鏡 )
新手的話...雙筒買7x50左右的已經很好啦。

love826

哦....多謝你幫手!!!
如果係新手, 係唔係買7x50??可唔可以睇到星雲嫁=v=(妄想), 不過, 大約幾錢到??? 邊度有得買?? 咩牌子好呀><

Bug

可以睇到很多星雲星團，雖然看來只係像好細的霧狀物體...但新手平平地先買支來練吓揾星雲星團絕對合適。
大支雙筒很難使用，揾星雲星團比用細雙筒難很多...
7x50基本上平平地$200-300已經很好，在鴨寮街買大陸貨也可以，但最重要的是要留意鏡片鍍膜，見到那些聲稱「夜光」、紅色鏡片鍍膜的要避之則吉(我又中過招.... )，應要揀透光度高的。

love826

原帖由 Bug 於 2009-2-8 01:00 發表
可以睇到很多星雲星團，雖然看來只係像好細的霧狀物體...但新手平平地先買支來練吓揾星雲星團絕對合適。
大支雙筒很難使用，揾星雲星團比用細雙筒難很多...
7x50基本上平平地$200-300已經很好，在鴨寮街買大陸貨也 ...

嗚嗚
我係睇星新手....好多野都唔識...
基本上..鏡片鍍膜，透光度高, 都唔知係點=[
可以比多小小資料我防止比人art嗎
thx x100000000........................0

willis

I am also a novice, but I got a 10x60 ($400) from Grandeye. The image is bright & sharp for me!  In fact it is much better than what I have bought from Ap Liu Street.

[ 本帖最後由 willis 於 2009-2-8 10:43 編輯 ]

love826

原帖由 willis 於 2009-2-8 10:38 發表
I am also a novice, but I got a 10x60 ($400) from Grandeye. The image is bright & sharp for me!  In fact it is much better than what I have bought from Ap Liu Street.

400蚊....嗚...好似好貴咁, 不過應該ok o既
但係, o係邊度買???
有冇平少少嫁=[

willis

A smaller objective version, 10x50, costs $280. Browse this link: http://www.grandeye.com.hk/

love826

em...我仲有一個問題....
10x50, 10x60, 所睇到o既星星/ 星雲會唔會分別好大???
如果係o既...100蚊o既差距, 都唔緊要o既

willis

Pros:
A 10x60 binocular can gather about 44% more light compared with a 10x50 binocular. ( (60/50)^2 = 1.44 ) So a 10x60 forms brighter images .
In addition, a 10x60 binocular has a higher resolution. ( resolution ~ 1/D, where D is the diameter, the smaller the numerical value, the larger the resultion) So a 10x60 forms shaper images
Cons:
10x60 is bulky compared with 10x50.
u need to pay more foa a 10x60

PS* I a novice in stargazing. I only know about the physics. The most obvious difference is the brightness. This helps me to spot out dimmer nebulas easier.

[ 本帖最後由 willis 於 2009-2-8 19:22 編輯 ]