Quote:
Originally Posted by dannat
Sam, firstly - you need to decide if you want to hand hold them or mount them on a tripod.(please report back )
It is very difficult to hand hold steady anything above 10x magnification for any length of time.
for astronomy i really like 15x70 - for widish field of view & good mag.
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Just to clarify the first number is the magnification and the second number is the apperture diameter.
Big apperture, more light, better for fainter objects.
However, too big a magnification with average aperture = CR@P ! Its like looking through a long narrow tube. Difficult to find your way around the sky. Frustrating for a beginner.
That is why the 9x63 are so good.
Also, dividing the apperture by the magnification gives you the exit pupil size. Too small is bad. Lioke a dot. Exit pupil should be 5 to 7 for best results, depending on your eye health, age etc.
Bintel are highly regarded here in Sydney too!
Knowlegable staff willing to spend time helping you.
Highly recommended.