Quote:
Originally Posted by Chippy3476
So a 40mm would be pretty useless with an 8" dob by the sounds of it?
So how would I go about getting a smaller magnification? I assume I will need less than 48* for lunar observing? Apart from that would there be any need to get a smaller magnification at all?
Thanks
Dan
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Not useless, but not as satisfying as a 32mm eyepiece would be for general usage - that is giving the widest field of view to observe deep sky objects that just fit inside that field.
But if you were using a H-beta filter to try see the Horsehead nebula in your telescope, you might see it with the 40mm, but won't with the 32mm.
I'm not sure why you want such low power for lunar observing. Even a 15 mm standard plossl eyepiece will have all of the moon sitting totally inside the field of view. Typically one would then use higher power to look at lunar features closer.
Regards,
Renato