Anyone gave these a go ......

[spaceboy]

http://www.365astronomy.com/77mm-abbe-orthoscopic-eyepiece-p-3111.html

I have been looking for a BGO in the 7mm focal length but with the used prices going up and down like a yoyo I thought I would consider my other options due to the market seemingly flooded with various orthos of equal quality to the BGO..

I have watched John's reviews http://stargazerslounge.com/topic/184935-astro-hutech-orthoscopics-compared-with-baaders-orthoscopics/ with much interest and my own experiences with the 6mm BCO would have the cash a flowing if only they would bridged the gap between the 6mm and 10mm BCO.

Having come across 365 Astronomy's offering with a similar FOV to the BCO and in a focal length of 7.7 which would be perfect for me I wondered if anyone else have had experiences with these particular ortho ?? I see TS also have a very similar one for sale.

[michael.h.f.wilkinson]

These look the same as a series of orthos offered by TS under their own brand. No idea about quality

[John]

Those have been around for a few years under a number of brand names. The reviews I've read say they are decent but not quite as good as Baader GO's / Astro Hutech's / Fujiyama / BCO or the Circle-T "volcano tops". The performance gap between the BCO and the likes of the BGO is pretty tight IMHO - I doubt you could squeeze another eyepiece in there !

The Astro Hutech's and Fujiyama orthos are just as good as the Baader GO for what it's worth.

[rwilkey]

Hi Spaceboy, yes, these were sold under the Kson branding in the UK for a short time, I bought a set of four and they are not bad, but a bit of false colour (yellow) creeps in and to be honest I would not buy them again, I would go for the Astro-Hutech if I was buying again, but don't like the narrow aFoV, more used to my widefields and 60 degree BST's.

[spaceboy]

Thanks for the advice guys.