香港天文論壇

which one is better?
short tube or long tube refractor if their aperture are the same

i 've ask the shopkeeper...he said celestron is the same as sky watcher.....they are both the same company.....they sell to US in celesstron but they sell to asia in sky watcher....is that true

is celestron= sky watch?
coz i see their telescopes are the same but in different color
ya....are all telescopes be made in china, even celestron and meade?

someone will solve in some year later......god knows

ya.......it aims to satisfy our curiosity....not only astronomy but all subjects we are studying

very good

C4 la...celestron c4r

is celestron C4R suitable for me such a beginner.
does the small aperter of refractor be dimmer the image? compare with reflecter

YA.....i 've a binocular scope recently but i want to promote to
telescope.....i 've read alot of astronomy magazine(e.g sky and telescope) and skill in books and on internet.......however, i 'm really no idea to buy which scope....thx
ps. u guys can reply in chinese

hi, every scope master...i am a beginner...i would like to know
which brand is better(celestron, orion, meadea, tasco.....)
refraction or reflection?
cheap or expensive( is $2000 a scope is expensive?)
thx