DWood

Thanks. Hopefully they open back up. I've searched and searched and can not find it anywhere else

Nothing. I've searched all around

But that's not as fun.

We have a Celestron power seeker 127eq that we don't much like. I am thinking of changing the mirrors to parabolic and removing the corrective lens. On top of that I was thinking to get a collapsible front part for the secondary mirror mount. To increase the focal length. What is that piece called and can you buy it independent?

Thanks

Exit pupil is what I was needing. Apeture÷magnification=exit pupil Focul Length(scope)÷fl(eye piece)=mag So I'm using 70mm aperture 400mm fl So 32mm eye piece 400÷32=12.5 70mm÷12.5=5.6mm exit pupil. Is that right? So that in reality would be the lowest we would want to go.

My wife got my daughter a Gskyer 70mm 400mm for Xmas. I've been doing reading and trying to learn. We will give early for the saturn jupiter conjunction. Searched site but unsure b of the venaqcular I need. What is the lowest return on investment for low power eyepiece? At what point does low magnification start to deteriorate the actual volume the scope can handle? Eyepiece in regards too.