Wow, it's absolutely a good news to us
This barlow is a piece of gem!!
I had been looking for it since I bought my telescope, and luckily found it in the second hand market in the UK, in turn bought it from an amateur in Spain last year.
Once you hold it in hand, you feel its weight and how solid and robust it is!!
It's designed to be used with TMB supermonos - you put one TMC into the barlow, you will be amazed - simply precise machinery
Savio had already posted a few threads about this little piece of gem.
I heard from other amateur astronomers that one was sold in second hand market in the US (uncertain about when it was) because the amateur did not like how his Carl Zeiss Abbe orthos sat into the barlow ... not smoothly sliding into the body of the barlow ... and decided to sell the TMB barlow and match the CZA with CZ barlow. But that amateur highly praised the performance of the TMB barlow.
I think the best way to see how good it is is to see it yourself - of course, "look through" the eyepiece+TMB 1.8ED barlow+telescope
Price tag at USD $420 ...
still a little cheaper than Carl Zeiss Abbe Barlow sold in the US ... so tempted to get another TMB ... just in case i lose or break it ...
there was one Masuyama 60mm wide field eyepiece sold at the price of AUD$750 in September last year ... you see these vintage astro stuff can really scare you off ...
Um ...
Just wondering if Savio has had a chance to use the Carl Zeiss Abbe 2x barlow - this barlow's power can go to 2.5, 3.0, ?4.0x with extension tube.
How does the Carl Zeiss barlow in higher power >2.0 perform in observation/planetary/lunar imaging compare with piling up two TMB barlows??
Would this run of TMB 1.8x ED be exactly the same as the previous run?? You know I has two TMB 4mm supermono/supermonocentric eyepieces of different colour!!

Have a safe and successful trip in Tibet!!
See you guys in HK in February, let's meet up sometime - star party/solar party/lunar party, or just meet up for a drink!!!!!!