Ryaen

3 hours ago, vlaiv said:

That topic is rather complicated. You don't need 3 elements, 2 is enough to get a "perfect" barlow.

Barlow is really simple optical design so you can't go wrong much in design itself - but you can in manufacturing. Much more important than number of elements is how good the product is in use.

That x2.5 GSO barlow is very good barlow and certainly very good value for the money. Much better than stock / plastic items that usually come with the scope.

There certainly are better barlows out there like Baader VIP barlow that you can "tune" to required magnification by using extensions but it costs like x3-x4 more than GSO one and difference will be minimal.

In fact - I'm more concerned with fact that you are using Bird-Jones type scope than anything else. Again similar thing with that - in itself Bird-Jones design is not a bad design - only problem is that it is often poorly executed design and advice that you'll find most often on such scope is to stay clear of them.

Not saying that your particular model is poor - I've neither seen Meade model nor read review of it so far. It could be rather decent, but there is a chance that scope simply provides blurred image at higher magnifications (having cheap plastic stock barlow won't help either).

Knowing this, I don't think you should go overboard with expensive barlows - as it might not result in improvements that you are after.

Hey that’s a quite an information for me being a noob. Thanks a lot.

I will stick to GSO 2.5x Barlow lens as of now.

3 minutes ago, vlaiv said:

In theory, you should be fine with that scope with magnifications of about x120-x150 range. That should give you good sharp image even in average seeing conditions.

With x2 barlow, you'll get x100 and x133 magnification. With x2.5 barlow you'll get x125 and x166 magnification.

This really gives you idea of what barlow you want - one that is x2.5 (but in reality is closer to x2.2), is triplet lens and is sensibly priced - look no further than:

https://www.365astronomy.com/GSO-2.5x-Achromatic-3-Element-Barlow-31.7mm-1.25.html

Given that you already have 15mm and 20mm eyepieces, x2.5 GSO barlow should not be too hard to purchase locally?

Much appreciated. Thanks mate.

However, my confusion is all about element present in a Barlow. 2 element or 3 element ? Does it really make a big difference in quality of viewing like getting sharp images with a decent field of view.

52 minutes ago, Philip R said:

Hi @Ryaen and welcome to SGL. 

+1 above, as per @andrew s.

To add to the confusion of which Barlow lens... 
I have a Klee 2.8x Barlow and a 1.6x Astro-Engineering 'MagniMax' that screws into the filter thread of the eyepiece.

It’s Meade Polaris 127mm aperture, 1000mm focal length of the objective, f ratio 7.9.

I have got 15mm, 20mm GSO super view, Plössl eyepieces. To avoid, buying higher magnification(6 to 10mm), I thought to go for a good Barlow lens.

The Barlow provided by Meade is basic, gives quite dark and blurry viewing even in clear calm Night sky and thus looking to upgrade it.

I even put my telescope out for acclimatisation for about 40mins to an hour.

Hi, I am pretty much new in Astronomy. Recently I have bought Meade Polaris 127mm telescope. The Barlow(2x) which Meade has provided is pretty basic. It gives pretty blurry view.

I have read few blogs and get to know that for 127mm, 2x-3x magnification is more than enough. Now I’m confused in its specs(element in it).

Wondering which one I choose, 2.5x Barlow 3 element or 2x Barlow with 2 element to get clear and crisp viewing.

Ryaen