Are there any drawbacks to the variable magnification telescope eyepiece?
An easy twist of the eyepiece brings magnifications from 50x to 100x without refocusing or even with parfocal optics at least having to change eyepieces. I was looking at Celestron's Ultima line and noticed that variable magnification eyepieces cost just as much as fixed magnification/focal length eyepieces. With variable magnification, the value of a Barlow is seriously diminished, because who needs to double the number of effective eyepieces when you can get a large, continuous range of them in one eyepiece? The eye relief does vary a little with different magnifications, but other than that I could not find a reason why this kind of eyepiece should not become my low to mid power eyepiece of choice. It covers from about 10mm to about 20mm, if I remember right, and that translates to between 50x and 100x for a 1000mm focal length telescope like mine. Why pay money for multiple quality optics in the 10mm to 20mm range, when they can get them all in one eyepiece of the same qualit
What about achromatic lenses? 6 lense systems are quite popular and expensive. Simple 3 lense systems can be quite cheap and bad quality. 4 lense Plossl are better and 5-6 give eye relief, larger AFOV, etc. Given the same number of lenses and line of product (material quality and design specifications), are not the variable eyepieces better than the fixed eyepieces?
I am talking about telescopes here, not microscopes. I am also comparing apples to apples: eyepieces with the same number, quality, and types of lenses.
Possibly related posts: (automatically generated)
- Related posts on drawbacks
- Drawbacks Of Quick Weight Loss « New Taste to Explore
- darlenesfarm.com » Blog Archive » Archive your e-mail from almost ...
- Auto Navigation Systems in All Their Variety | Buy & Reviews ...
- Related posts on Eyepiece
- 16 Cool Photography Accessories « Being an Online Entrepreneur
- Corrine Fasching » Blog Archiv » Marine Binocular Buyers Guide ...
- nikon fm2n amazon | Nikon Digital Camera
- Related posts on Magnification
- Bushnell NatureView 8×42 Roof Prism Binocular | Goggle Finder
- Corrine Fasching » Blog Archiv » Marine Binocular Buyers Guide ...
- Opteka 650-2600mm High Definition Telephoto Lens for Canon EOS 50D ...
US $14.75
Too many lenses… each lens causes a little bit of chromatic abboration… Keep it as simple as possible when it comes to lenses…
Moose is right. However, I have had good success with using variable magnification eye piece with the standard light microscope. The effects are excellent. The only drawback that I have noticed is that when the eye piece is adjusted for highest magnification, the field of view narrows a bit. This is not a major problem but does distract. My advise is, pay the extra cash and get a quality lens devise.
Your choice is good. You don’t need to be extremely picky unless you are going to do astrophotography.