View Single Post
  #14  
Old 27-02-2011, 10:50 PM
AstralTraveller's Avatar
AstralTraveller (David)
Registered User

AstralTraveller is offline
 
Join Date: Mar 2008
Location: Wollongong
Posts: 3,820
Quote:
Originally Posted by mikesim View Post
Thanks for the advice folks,
I'll go into Bintel in the next few days and check them out. Am leaning towards the naglers for eye relief and price (allows me to buy more EP's and minimise use of the powermate). May also start with the 31 Nagler for low magnification wide FOV. I read on a review that the standard TV plossl is actually better for planetary observation than a wide FOV so i might get a couple of them as well.

http://www.cloudynights.com/document...yeyepieces.pdf

Cheers
Mike
My old Celestron 7.5mm silver-top plossl used to beat a 7mm Nagler on planets. However IMHO the best choice for planets is an ortho (unless perhaps you can find a TMB super-mono). I have UO HDs and I'm stoked (and the plossl is in retirement). You just can't beat less glass (and good coatings) for reducing scatter and so increasing sharpness and contrast. Also, when you look at a bright object with a plossl you will get a ghost image diagonally opposite the object which can be quite distracting. That is from light bouncing off the front of you eye and off the front surface of the eye lens and back into your eye. Because the front surface of the ortho is a different shape you don't see this artifact. That in itself is a huge improvement.

Last edited by AstralTraveller; 27-02-2011 at 10:51 PM. Reason: typo
Reply With Quote