Largest 1.25 EP for moon viewing?

[Puglets]

What is the largest mm EP I can buy for my celestron nexstar 8se for moon viewing? 25mm seems too close for full view of the moon.

[nightfisher]

A 32mm plossl would be a good ep for the scope

[Puglets]

Everyone I have seen is a 2" EP not 1.25" is there such a thing as a 1.25" 32mm? Saves me buying an adapator as well

[Fozzie]

http://www.telescopehouse.com/acatalog/Revelation-32.0mm-Plossl-Eyepiece-1.25-.html

This should do the trick, it's a good price and a good EP too..

[ronin]

32mm plossl, look up GSO or Revelation eyepieces.

With a 32mm plossl you will get 0.78 to 0.79 degree field, as the moon is about half a degree it will all just fit in.

Equally a 25mm BST Starguider or X-Cel will deliver much the same, about 0.74 degrees.

[John]

Your 25mm eyepiece should enable you to just about fit the Moon in - it gives a .63 degree true field which is a little larger than the apparent diameter of the Moon. A 32mm plossl will give you a bit more leeway though.

[Charic]

Puglets........have you installed the freeware STELLARIUM? you could set-up and use the ocular view to get a rough idea of different  fields of view, and not only that, the program as a Planetarium is a hive of information 

[ghostdance]

+1 for Stellarium ( desktop has more functions but the mobile app is good too). I've gone over to Sky Safari 4 lately - that and Mobile Observatory are good resources - use em a lot. There's also an app called (IIRC) Solar System Scope that is very nice. All on Android via the Play Store. They work well on my Galaxy III (no prizes! )

And to think when I first got a smartphone, I thought Google Stars was the bees knees!

Link to a great ep resource:

http://www.12dstring.me.uk/fovcalc.php

Have fun!

[John]

......Link to a great ep resource:

http://www.12dstring.me.uk/fovcalc.php

Have fun!

Thats an interesting tool and is often linked to on the forum but, in my opinion, it does not accurately present comparisons between eyepieces of the same focal length with different fields of view.

The simulator keeps the field size the same but shrinks or expands the target object proportionally depending on whether the eyepiece selected has a larger or smaller field of view than the previous one being simulated. In the real world the edges of the field of view expand or contract depending on the eyepiece apparent field while the target object stays the same apparent size to the observer.

This may sound a small point but it does mean that the simulator is not always accurately portraying what the observer would see when comparing eyepieces of the same focal length but differing apparent fields.

[MAN or ASTROMAN]

A 32mm Plossl is probably my most used EP.Great for wide-view observing!

[ghostdance]

Thats an interesting tool and is often linked to on the forum but, in my opinion, it does not accurately present comparisons between eyepieces of the same focal length with different fields of view.

The simulator keeps the field size the same but shrinks or expands the target object proportionally depending on whether the eyepiece selected has a larger or smaller field of view than the previous one being simulated. In the real world the edges of the field of view expand or contract depending on the eyepiece apparent field while the target object stays the same apparent size to the observer.

This may sound a small point but it does mean that the simulator is not always accurately portraying what the observer would see when comparing eyepieces of the same focal length but differing apparent fields.

Good point John. I had wondered at some of the simulations but not known the reason. Thanks.