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Barlow Lense


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#1 pughpl

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Posted 24 March 2007 - 11:36 AM

I have really gained an interest in lunar observing. In fact I am working through a training course on observing at the present time.  I need to get a barlow lense to use with my LPI.  Any comments or suggestions on the magnification?  Furthermore, if you have used a barlow do you find it dificult to image with the additional magnification?

Thanks

Phillip
LDX-75 AR5

#2 Mark Sibole

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Posted 24 March 2007 - 12:24 PM

A barlow is a good addition for high magnification imaging.
It can be harder to get your object centered on the chip but is very possible.
you can use a 2x,3 x or 5x barlow but remember seeing conditions and transparency plays a big roll in high magnification imaging.
Meade offers several options in barlows and should have 1 to suit your needs.

Regards

Mark
Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#3 iverp

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Posted 25 March 2007 - 08:18 PM

I often use a 2x barlow for planetary imaging. It really helps to get the image scale you need to bring out details. I have tried stacking 2-2x barlows with some success.

I would suggest you get the highest quality barlow you can get for your budget. You might start with a 2x or 3x. At 4x I find that my polar alignment needs to be near perfect or else I start to see lots of image shift. I also find that focusing at 4x is really tricky.

#4 SRTS1

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Posted 27 March 2007 - 03:20 PM

I use the Meade 3x with great success.  I think you will find it very useful.
14" LX200GPS
6"  LXD55
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