Kokusai Kohki ORTHOSCOPIC lenses are around $50 with good reports
Vixen Lanthanum LVW lenses are around $190.
with a excellent reports in Magazines
Kasai HC -orthoscopes are around $120 but based on the Carl zaiess Abbe series.........of course not the same quality but apparently getting there.
These are similar to vixen with only around 40degreesFOV
All are Japanese but only Vixen is probably relatively well known and I cant find much on the other 2 though I am led to believe by various posts that some people believe they are good or very good. vixen would perhaps just edge them out
I have been going round in circles the last week trying to select some appropriate eyepieces for a 5inch/130mm Vixen reflector model R130sf.
I figure if I get a high priced /high quality eyepiece I can easily swap or sell this down the track if i ever need to upgrade to another/ different type of scope .
With cheaper models I can buy a greater range and see more
but perhaps not as well.
NO point putting a $10,00 STEREO INTO A CLAPPED OUT $500 VW , though some may.
likewise I DON'T WANT TO OVER SPEND ON A SCOPE, WHICH IS FAIRLY INTRODUCTORY.It has its limitations.ie 260x with a barlow
galaxies , nebula and planets would be my main viewing,
I have decided to order a good quality Barlow though many have said not to.
I want to get the most out of viewing but if differences are not so noticeable the price becomes the issue.
There would be no issue if i had the opportunity to try them alll....................which I don't have
Buy what you can afford is not the point of this post, rather where is the value.
What areyou favorites.
If you had about $200 each to buy 4 lenses what would you buy in order of ranking for your $800.