那支鏡會比較好?

calvinvtc

那支鏡會比較好?
我係新手黎架，
我有 $5-7k buyget，本來諗住買 meade ETX 90，
但又覺得好似不太夠，125 帶出去會唔會重得滯？
請問仲有無其他更好的選擇?
謝

(Remarks from Oldfield: sorry, I've pressed the wrong button, original content recovered)

[ 本帖最後由 oldfield 於 2009-3-9 15:02 編輯 ]

willis

I have tried the ETX 90, it is very handy. According to the manual, the difference in tube weight is 6.9-3.5 = 3.4 kg. In stargazing extra 3.4 kg is not much.

CHYeung

If you do not have to carry it a long way to the observing site, the bigger is the better.  If you have to travel with it on public transportation, you have to think again.  You have to add the weight of the eyepieces and other gadgets.

The ETXs are good for visual observaing and lunar, solar & planetary imaging.  If you want to start imaging starfield or DSOs (Deep Sky Objects), you need an equatorial mount.

willis

Additional infomation: ETX 90 & 125 share the same tripod.

oldfield

I would suggest a scope which has a shorter focal length...

細口徑睇倒既 deep sky 好多時都幾大下, 所以闊 D 視場有著數 :-)

當然, 如果主要睇月球同埋行星就無所謂