Go Back   IceInSpace > Equipment > Eyepieces, Barlows and Filters
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rating: Thread Rating: 2 votes, 5.00 average.
  #21  
Old 05-09-2014, 09:21 PM
Wavytone
Registered User

Wavytone is offline
 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Quote:
Originally Posted by Don Pensack View Post
The point is, in an undriven scope
... is NOT ideal for high powered views of ANYTHING.

OP, you must firstly have a scope that tracks at sidereal rate, for starters, and know how to align it well enough.

Second, you have a tradeoff to make : image quality at high power vs field of view.

Those serious about high power views of smallish objects opt for image quality over ultra wide apparent fields of view and in this respect eyepieces with fewer elements (3 elements or less) for maximum sharpness on-axis, minimum scattered light, no ghost images. Smallish fields (50 degrees or less) are an accepted compromise that goes with this.
Reply With Quote
  #22  
Old 05-09-2014, 10:04 PM
MortonH's Avatar
MortonH
Deprived of starlight

MortonH is offline
 
Join Date: Nov 2006
Location: Sydney
Posts: 3,912
Agree an undriven scope is not IDEAL but it's far from useless. My alt-az mounted Newt (200mm f/5) gave me some very nice views of Mars and Saturn using 82º eyepieces (Explore scientific 4.7mm, William Optics 4mm) plus, on a couple of good nights, a 3.5mm LVW.

Jupiter, on the other hand, is trickier due to low contrast features, and I find myself wanting a non-existent 82º Ortho!
Reply With Quote
  #23  
Old 13-09-2014, 02:04 AM
bytor666
Cygnus X-1

bytor666 is offline
 
Join Date: Dec 2004
Posts: 366
Best views of Jupiter were using a 9mm T1 Nagler in a 12.5" F/4.8 reflector, (1995-1996),then after that was with a Pentax XW and finally the Delos in my later years.

I've used anywhere from 200x-260x without tracking and I have no problems nudging along and also sketching details.

IMO, if you want a widish FOV and clariy along with comfort, look no further than the Pentax XL's, Pentax XW's and Televue Delos eyepieces.

Cheers,
Reply With Quote
Reply

Bookmarks

Tags
eye piece, planetary


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 05:19 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement