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Originally Posted by EzyStyles
thanks Robert. More washed out with a 3x barlow than 2x? should I save my money then instead of getting a 3x barlow since i already have a 2x?
Cheers
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really depends on what eyepieces you have, the scope you're using (the larger the aperture the higher the magnification you can usefully use - if seeing conditions allow), and what you want to view. For example if you had an 8inch F5 newtonian, it could usefully be pushed to max ~300x magnification under good seeing conditions and this would be useful for lunar/planetary viewing (but little else). If your highest mag eyepiece was a 10mm, this would give 100x, a 2x barlow 200x and a 3x barlow 300x. SO in this case the 3x would be useful to you on occasion. If you already had say a 6mm eyepiece the 2x barlow would have already pushed you to/beyond maximum usable mag limit so no point having a 3x in this case.
hope that helps,