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Thread: EP for EV9.25

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    Cool EP for EV9.25



    Hi Folks. I'm a relatively young observer (turning 30 this year) that got into the hobby a couple years back. My eye's are 20/20 and being I live in rural Saskatchewan Canada I have dark skies all over within a 10 minute drive. The light pollution in my backyard in the middle of town isn't bad for the occasional late night weekend viewing session. I started with a $100 80mm refractor and I was instantly hooked. Not long after that I got a Skywatcher 8" dob and a variety of cheap EP's including the 8-24mm Celestron zoom. Last year I went to a star party event in southern SK and the skies were transparent and still almost every single night. I spent hours just finding only a few objects as there was just too much to look at. Since then I recently had my first born and time for this hobby is hard to come by. I am informing you of all this because my situation may change your advice and or answers depending on my circumstance.

    So anyways, I just picked up a Celestron Nexstar EVO 9.25 a couple weeks back because I needed something I can haul around easy and will setup quickly and give me the best views for a portable scope. Now my question is what EP's do I buy next? I love viewing planets especially Saturn (who doesn't), but I also am getting more into deep sky now that I actually have a scope that can find whatever I want with the push of a button. I am currently mostly using a 12mm Celestron, 40mm Celestron (came with scope) and the 8-24mm Celestron zoom. These are all 1.25" and I am happy with the views but of course I want the best views available to me as that is my nature. I find myself using the 12mm a lot even on Messiers and Galaxies and TBH I don't grab the 40mm much...I just find the objects too far away to resolve any detail.

    I am looking at getting a Celestron 2" diagonal or equivalent ($180CDN) and a Televue Ethos 13mm ($750CDN). I don't have the opportunity to look through a 2" EP and the nearest dealer is 4 hours from me! That is why I am here. Do you guys think this is a good way to start with 2" or should I just get a cheap Luminos 2" ($250CDN)? Or do you have any other suggestions for me? I want to make sure I'm not dropping a grand on something I wont think is worth it.


    Thanks!

  2. #2
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    Default Re: EP for EV9.25

    Welcome to the forum!!

    One of the great things about the scope is that it will work well with almost any EP, the Luminos will work well with it. Will the view be better with the Ethos? Yes. Will it be 3x better? NO! Only you can say if it will be worth it to you to spend the extra on the Ethos.
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    Default Re: EP for EV9.25

    Hi and welcome!

    I think if at all possible you should have a look through a 100° eyepiece before committing to the 13mm Ethos, to make sure you are comfortable with that width of field. I had one, and sold it because I was happier with the view through my 13mm T6 Nagler: and the Nagler is lots smaller (and cheaper) too, so it doesn't unbalance my dob.

    By the way, you don't need a 2" focuser for eyepieces with FL's less than about 17mm: the 13mm Ethos is actually a 1 1/4" eyepiece...

    If you are wanting to go down the 100° track, have you thought about the ES eyepieces? I have the ES 20mm 100°, and it compares very well with the 21mm Ethos at about 1/2 the price- and would work very well with your f10 scope.

    All the best, and enjoy your new scope: that 9.25" OTA is one of the best out there!

    - Dean

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    Default Re: EP for EV9.25

    Your scope is very kind to almost any decent eyepiece. I have a C8 so a little different but pretty close for eyepieces. I use 10mm 13mm, 22mm and 35mm Panoptic a lot in this scope. Eyepieces are so subjective that trying to make suggestions for you is a mine field.
    Yes to a dielectric 2" diagonal (many nice ones to choose from). Personally these would be my choices 10mm Delos or Pentax, 14mm Delos, 22mm Nagler, and 31mm Nagler. For me the 35mm Panoptic and the 31mm Nagler are tied but quite different. I picked the 35 Pan as my keeper. You could get the 10mm and 14mm for the price of the Ethos. In the premium eyepieces there are a great number not on my list that are just plain wonderful, like the Ethos.
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    Default Re: EP for EV9.25

    As others already indicated SCT scopes are not to fussy about EPs and even budget EP works fine. Still, you will see noticeable improvement once you step up in EP quality.

    I tried many different EPs in my 8" SCT from generic to Televue and the lines I would recommend are ES 68 and 82 degrees and Meade 5000 UWA. They work great on all kind of targets from planets to DSOs.

    Definitely get good quality 2" diagonal. I use Celestron SCT dielectric.
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    Default Re: EP for EV9.25

    As with anything you buy when price starts to substantially increase (2X or 3X) usually the performance is not worth it. However one situation I can compare to personally is binoculars. I've looked through quite a few and I have looked through a pair of $40 Celestrons, $500 Celestrons and $1200 Zeiss. The Zeiss were the best but the $500 Celestrons and the $1200 Zeiss under most conditions were almost the same and if you weren't comparing side by side back to back you would probably never know. As for the $40 Celestrons…..yeah no point in even talking about it haha. So I guess my question now for you is would the Luminos be more comparable to the Ethos visually, or would it be closer to the cheaper Plossl's im using?
    Last edited by jake_9611; 06-23-2018 at 04:24 PM.

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    Default Re: EP for EV9.25

    When I had my 9.25 SCT and Edge scopes I found that they were indeed very forgiving of eyepieces.

    Personally I dislike the 100 degree AFOV eyepieces. I find that scattered light is not well controlled in them and the pin cushion distortion is annoying. Similarly for the 82 degree formats. So I won't talk about those.

    You will want to have an eyepiece that gives you the maximum TFOV possible with your 2" visual back upgrade. That could be either the 55mm TeleVue Plossl or the 41mm TeleVue Panoptic. Also you'll want an eyepiece that gives a 2mm exit pupil which gives the maximum resolution achievable with your scope. So that would be a 20mm focal length. The TV Plossl at 20mm and the Panoptic at 19mm would be very good.

    But for crisp planetary views and maximum contrast on DSOs Orthoscopics rule and they have better eye relief than plossls. KK Fujiyama are fine as are BCOs.
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    Default Re: EP for EV9.25

    Quote Originally Posted by not_Fritz_Argelander View Post
    When I had my 9.25 SCT and Edge scopes I found that they were indeed very forgiving of eyepieces.

    Personally I dislike the 100 degree AFOV eyepieces. I find that scattered light is not well controlled in them and the pin cushion distortion is annoying. Similarly for the 82 degree formats. So I won't talk about those.

    You will want to have an eyepiece that gives you the maximum TFOV possible with your 2" visual back upgrade. That could be either the 55mm TeleVue Plossl or the 41mm TeleVue Panoptic. Also you'll want an eyepiece that gives a 2mm exit pupil which gives the maximum resolution achievable with your scope. So that would be a 20mm focal length. The TV Plossl at 20mm and the Panoptic at 19mm would be very good.

    But for crisp planetary views and maximum contrast on DSOs Orthoscopics rule and they have better eye relief than plossls. KK Fujiyama are fine as are BCOs.
    I just looked up prices from my nearest distributor and the 55mm TV Plossl is $320 and the 41mm TV Pan is $640. Is the pan worth it @ twice as much? Pricing scale is the same for the 20mm and 19mm...

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    Default Re: EP for EV9.25

    Quote Originally Posted by Bigzmey View Post
    As others already indicated SCT scopes are not to fussy about EPs and even budget EP works fine. Still, you will see noticeable improvement once you step up in EP quality.

    I tried many different EPs in my 8" SCT from generic to Televue and the lines I would recommend are ES 68 and 82 degrees and Meade 5000 UWA. They work great on all kind of targets from planets to DSOs.

    Definitely get good quality 2" diagonal. I use Celestron SCT dielectric.
    The only diagonal I see that Celestron offers doesn't say dialectric? However Televue has one for $50 more...Also I cant get ES EP's from my supplier so im stuck with Televue.

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    Default Re: EP for EV9.25

    Quote Originally Posted by jake_9611 View Post
    The only diagonal I see that Celestron offers doesn't say dialectric? However Televue has one for $50 more...Also I cant get ES EP's from my supplier so im stuck with Televue.
    Being stuck with TeleVue isn't bad.
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