Explore Scientific Eyepiece

[Nightspore]

It would take too long to list all my eyepieces. I don't actually know where a lot of them are. I have a pair of Ohi 25mm orthoscopics (mine are Astro Hutech). The Fujiyama and Astro Hutech are just re-badged Ohi.

 

 

I didn't think there was a 25mm BCO. After 18mm isn't there a 32mm Plossl?

 

 

I finally collected a set of Tak ortho's not long before they ceased making them.

 

 

 

[Scopeman]

I'm going to possibly get the 18mm Fujiyama, but below that the exit pupil is too small for me

[Nightspore]

The 18mm Astro Hutech (next to the 18mm BCO below) was the first ortho' I ever bought. It still gets used. It was the eyepiece that kind of converted me to ortho's. 

 

 

You might find this useful:

 

 

Baffle diameter = Field stop.

[Scopeman]

That is quite interesting, the lens diameters are so tiny for the higher powers, well from 7mm to 3.5mm

[Nightspore]

17 minutes ago, Scopeman said:

That is quite interesting, the lens diameters are so tiny for the higher powers, well from 7mm to 3.5mm

 

 

I believe ortho's generally have slightly longer eye relief compared to Plossls.