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Thread: Eye pieces

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    Unhappy Eye pieces



    Hello there I am considering purchasing extra ep's for my synscan 127 with a view of spotting some planets as well as possibly one or two galaxies but I'm totally confused as to which ones I need. I'm looking at Baader along with Televue but are they both as good as one another or is one better, if so why?
    The size I'm going to start with is 6.5 and from there I intend to purchase more, do I need to keep to one brand or not? I'm not really bothered whether they are wide field of view or not but once I get through the confusing language the sellers use ( for people new to astronomy that is) I can investigate other options depending on my viewing sessions.

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    Default Re: Eye pieces

    First things first, for observing galaxies you will often want different eyepiece characteristics than planets, the most prominent of which being magnification. Many galaxies and nebulae are bigger targets than one would expect, so will usually want a wider field of view for them. Planets, on the other hand, are very small and bright, so magnification becomes very important. Magnification is limited by both seeing and aperture though. The laws of physics will only let you increase magnification so far for a given aperture before the quality of your image begins to degrade. This page will give a better explanation than I can:
    Starizona's Telescope Basics
    Meanwhile, if the atmosphere is not crystal clear when you are observing, you will run into poor seeing conditions at higher magnifications. When the atmosphere is thick and turbulent, images will appear jittery and blurred as light travels through it.

    I would suggest starting at lower magnification and working your way up. Personally, almost all of my observing is with two eyepieces and a barlow lens: a 25mm, a 12mm, and a Zhumell barlow. The 25 gives me wide field views, the 12mm lets me close in on planets and small DSOs, and the barlow lets me get in really tight on planets when seeing permits. The 6.5mm you mentioned would give you 230x magnification in your scope. While this is great for planets (And within your scope's usable magnification levels), seeing may not always permit that level of magnification and you may be disappointed. I see that you live in the UK, which has similar weather to where I live in Oregon, USA. It's quite common for seeing conditions to prohibit me from going beyond about 150x without a noticeable loss in visual clarity.

    As for brand, you never have to stick with one. Most of my eyepieces are made by different manufacturers (1 Zhumell, 2 Meade, 1 Astro-tech, Two unmarked that came from a garage sale, and 3 Celestron). Some brands are definitely higher quality than others, but that doesn't automatically make them the better choice. A Televue plossl EP will beat a cheap Meade plossl by most comparisons, but the Televue costs five times as much.

    To wrap up, I have a couple questions for you. First, what language confuses you? There are definitely a lot of terms that are thrown around, so if you tell us where you're getting hung up we can help clarify it for you. Second, what eyepieces do you currently use and what about them makes you want something different? This is important, because it will let us know what you have already tried and allow us to make better suggestions based on what you have.

    Hope this clears things up at least a little!

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    Atlas, Celestron CG-4, Orion Min-EQ
    Eyepieces: TV Delos 8mm, ES82 18mm, Assorted bundled eyepieces
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    Default Re: Eye pieces

    Hello ravenhawk82 thanks for you reply. Firstly I use the EP's that came with the scope they are 20 and 10 mm. The language that is confusing ( jargon) used on the web site (Harrison) on there it mentions two types of EP, 1) Hyperion and )2 orthoscopic (both of them are Baader) there is a brief explanation for each but what is the basic deference?
    The reason I want extra EP's is that I currently have only two (the ones supplied with the scope when purchased) and I feel that better quality as well as filling in some viewing holes, will improve my experience.

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    Default Re: Eye pieces

    Angelegirl
    First of all you do not and actually should not limit yourself to a single brand.... While Teleuve makes good eyepieces and you pay good money for them NOT EVERY ONE is the best in it that one focal length when looking for say a 6mm or so eyepiece you have to compare several manufacturers and pick the one that "works" best for you and of course your budget... Personally I use Pentax XW's for high power and Televue Panoptics for low power.. the reason is The Televue are better low power eyepieces then the more expensive comparable focal lengths of the Pentax..BUT on the other hand the Pentax high power eyepieces beats the higher power Televue Delos eyepieces... (my opinion) I would be a fool to stick with one brand...

    For The higher power eyepieces you normally do not want a wide field FOV for lower powered eyepieces wide FOV is usually not only wanted but needed... The comments about magnification made by Ravenhawk are true... Most of us observe under low power (well under 200x 90 percent of the time (excluding the moon) so to be honest I too would recommend start your collection with low power eyepieces or at least medium power....

    What is important to me ...EYE RELIEF the distance you have to place your eye above the eyepiece in order to use it comfortably I need at least 15 or os mm anything less and I have to have my eye in contact with the eyepiece ( those high power Plossl eyepieces are a royal pain and useless for me but the lower power Plossls are fine .... FOV used to be very important but I sold off my ultra wide angle 82 degree eyepieces and replaced them with 68-70 degree eyepieces several years ago because I did not like having to shift my old eyeballs all over the FOV plus I tend to concentrate on axis (the center of the FOV and not along the edges... )...So frankly eyepieces are extremely personal items...what works for you may be completely useless or disliked by your next door neighbor at a star party even using the same scope as you do...

    Bottom line...Optically there is not a heck of difference between any named brand eyepiece on the market so a Meade will be just as useful as a Televue or Baader or Explore Scientific or Celestron or Zhumell ESPECIALLY for beginners ...So I'd say buy a named brand..buy one that fits your budget and then use the darn thing...

    Bob G
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    Default Re: Eye pieces

    Hi Angel,

    the best deal right now are the Maxvisions. I expect them to sell out soon, but they're still available. They have a bit of a history. Made by Maxvision (a JOC brand), Meade carried them as their SWA line. Then Meade fell out with JOC, cancelled a big order, and put their SWAs on sale to abandon the line. They sold out quickly in the US. JOC, who owns Explore Scientific was stuck with a whole lot of eypieces and offered them in Europe (UK too) for ridiculously low prices: Explore Scientific | Okulare | online kaufen

    I have two of them, the 20mm and 28mm 68°. Got them for €69 and €95 from this dealer in Den Haag. They are surprisingly good. As a matter of fact, I may buy the 34mm as well, even though it is hefty.

    Read about them at stargazerslounge.com. Here's a google link that will bring you directly to the relevant discussions: Maxvision

    These are (almost) as good as Televue Panoptics, and better than Hyperions.
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    Default Re: Eye pieces

    When it comes to EPs, most people will begin with Eye relief. Which is going to offer the best and what are you comfortable with. I do believe Brand can go a long way and the saying "you get what you pay for" can mean exactly that when it comes to EPs. I began with Celestron in March and had 5 of their EPs and a Barlow. I sold all but the 32mm EP and spent some money on a couple mid-range EPs. I simply can't afford TeleVue, but I hear nothing by good things about them. I'm waiting for my TeleVue Barlow but $400 an EP is simply out of my price range. I did however score a $400 Zhumell EP for $100 so if you do some hard research, you'll find some deals out there.

    Many members suggested Explore Scientific, but again I spent the money on the Zhumell's for now. I do plan of checking them out. Baader was also brought up to me when I was looking for better EPs. While the Zhumell "Planetary Series" were better than my Celestron, my Zhumell "Z100" blew me away!
    My advice? Stay away from kits. I didn't heed that advice and like I said, I sold most of it a month later. You're doing the right thing by researching and asking questions.

    Good luck!
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    • EPs: Zhumell Z100 9mm, Orion Expanse 15mm, 6mm. Orion
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