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 Post subject: barlow lens
PostPosted: Sat Sep 22, 2012 6:01 pm 
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Joined: Thu Jun 14, 2012 5:46 pm
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Location: Little Lever
hi, at the moment I've got a 2x skywatcher barlow that came with the scope but thinking of upgrading it with a better one, scope is 130p F=650mm.. eye peices 25 & 10mm
been looking at.. Altair ex ed 3x..televue...astro engineering do a imagemate 4x
price wise Altair is cheapest then astro, televue.. but the astro and televue do a imagemate but can also be used for visual viewing are these any good?


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 Post subject: Re: barlow lens
PostPosted: Sat Sep 22, 2012 8:31 pm 
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Joined: Tue Feb 28, 2012 6:48 pm
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Location: Bolton
A 4x barlow on that 10mm I'm guessing will be horrible. I got a 10mm 25mm and a 2x barlow with my explorer. the 25mm is ok even with the barlow but the 10mm is a bit iffy even without the barlow.

My preference was to buy better quality eye pieces, I rarely use the barlow.

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Phil
Skywatcher Explorer 200P & EQ5


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 Post subject: Re: barlow lens
PostPosted: Sat Sep 22, 2012 11:04 pm 
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Location: Little Lever
Yeah, I don't like using the 10mm, but was thinking of getting something in between the two.

With it being a small scope i need the magnification


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 Post subject: Re: barlow lens
PostPosted: Sun Sep 23, 2012 7:06 am 
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Location: Bolton
This is the Barlow which I use - an APO triplet from Parks Optical:
http://www.parksoptical.com/product_info.php?cPath=25_122&products_id=538&pname=2X+3+Element+Gold+Series+Barlow+-+1.25
It cost around $70 when I bought it (in the USA) a few years ago (when the Dollar exchange rate was much more advantageous!).

But I see that Meade also do an APO triplet (i.e. 3 lenses) Barlow, and there's one on eBay at the moment:
http://www.ebay.co.uk/itm/Meade-4000-Series-140-APO-1-25-2x-Barlow-Lens-Boxed-/150890959645


Last edited by rwilkinson on Mon Sep 24, 2012 7:28 am, edited 1 time in total.

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 Post subject: Re: barlow lens
PostPosted: Sun Sep 23, 2012 4:46 pm 
I use an Orion Shorty Plus - make sure you get the "Plus". It is a fully APO barlow. The TV Powermates are highly recommended, just couldn't afford them at the time.

Ian


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 Post subject: Re: barlow lens
PostPosted: Fri Oct 05, 2012 3:48 pm 
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Joined: Thu Jun 14, 2012 5:46 pm
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Location: Little Lever
Well I've gone for a GSO x3 ed barlow and a BST variable polarizing filter as this is my first filter.


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