Omega Micromega version question

[yya]

Hi guys
Here is a quick question for omega micromega, I'm ready to buy a focuser with silver ring, Can I ask any different between normal one?

 

[xkaes]

It looks like one is on backwards.

 

[Pieter12]

Not on backwards, just rotated 180º. The silver ring you're seeing is actually a slot in the eyepiece for a blue filter. It is thought that a blue filter makes it easier to focus. Not necessary.

 

[DREW WILEY]

It just flips around for more compact storage if necessary. The optional blue filter was related to graded blue-sensitive paper days, and when enlarging lenses were less well corrected. The point is, you wanted to focus using blue light only. That is rarely an issue anymore.

 

[yya]

Not on backwards, just rotated 180º. The silver ring you're seeing is actually a slot in the eyepiece for a blue filter. It is thought that a blue filter makes it easier to focus. Not necessary.

Okay! I understood!
Another one just put the filter separate in box

 

[yya]

Not on backwards, just rotated 180º. The silver ring you're seeing is actually a slot in the eyepiece for a blue filter. It is thought that a blue filter makes it easier to focus. Not necessary.

I assume the silver one is blu filter inserted in the lens, if possible, I can easy to remove it, correct?

 

[mshchem]

I remember as a young man I thought that these were not required. I don't know what I would do without it now

 

[Pieter12]

I assume the silver one is blu filter inserted in the lens, if possible, I can easy to remove it, correct?

Yes.

 

[yya]

Yes.

Thanks a lot!