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Thread: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

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    Default Can anyone recommend a good 1.25" Orion wide-field eyepiece?



    I have a Nexstar 8i and a 28mm (ED-Orion) eyepiece, a 9.5mm (ED-Orion), and a 5mm Orion Edgeon Planetary eyepiece. I also have a 2x Barlow, and a 2.5x Barlow. But I don't feel that the 28mm is wide enough for me to find some objects. Often when I use the GoTo, the object is just off of the field of view, and I have hunt for it. So maybe something like an Orion Ultra =Wide Field View 42 mm?

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    SCOPES: Celestron Nexstar 8i, Celestron Nexstar 5SE. Eyepieces: Orion ED-2 25mm (1.25"), Orion ED-2 9.5mm (1.25"), Orion Edge-On Planetary 5mmEP (1.25"), Celestron 1.25" diagonal, Telrad, Celestron 2x Barlow, Teleview 2.5x Barlow, 8-24mm zoom eyepiece, Celestron LPR filter, Celestron f 6.3 reducer/corrector, Lumicon 1.25" rotating polarizer, Celestron color filters (#21, 80A, 56, & 96). MISC: Duralast 12 volt 230 amp battery, black flexible dew shield for N8i, Celestron 7 amp Powertank. Note, most of my equipment was bought used in a great package deal.

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    Joanna Sue's Avatar
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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    I have to ask is there some reason why you are just considering only Orion eyepieces? I would think you might wish to look at ES or some other maker too and compare prices.

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    KathyNS's Avatar
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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    According to the listing I saw, the Orion ultra-wide eyepieces have a design field of view of 100 degrees. In your scope, they are going to be severely limited by the barrel diameter.

    Even in a 2" barrel, you would only get a 60 degree AFOV from a 40mm eyepiece. In a 1.25" barrel (in the unlikely event that such a thing existed), you would only get a 37 degree AFOV.

    Here is a spreadsheet that will help you choose eyepieces: spreadsheet
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  4. The Following 2 Users Say Thank You to KathyNS For This Useful Post:

    astronian (09-13-2013),Joe Lalumia (09-13-2013)

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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    How about trying a reticle EP to improve your centering at the beginning of the alignment sequence. Defocusing the star is another way to improve the accuracy without the reticle. Even if your object is out of the field, it should always be "off" in the same position. So rather than searching about, it should correct in the same direction for each object as you move about the sky.

    Just a different thought.
    pb2au

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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    Well you will not be using those barlows with either the 5 mm or 9 mm for sure in your 8i as those combinatins are way too powerful ..

    Anyway I think you should try to refine your alignment procedure and set up the scope better (Balance Backlash,etc ...I do own an 8i and it puts 80 percent of my GoTos dead center and the other 20 percent just slightly off center using a 25 mm standard plossl and it will track well enough to keep the entire FULL moon entirely inside the FOV of that eyepiece for at least 7 full hours..at which time is was nearing the edge but still entirely in the FOV

    While it took a while for me to get the scope "adjusted" and fine turned it can be done pretty easy ...

    Bob G
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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    Hello LeubDier. If you feel the need to stay with the Orion lines of eyepieces and remain within a reasonable budget, you might want to consider the 66 degree Expanse line at:

    Orion Expanse Wide-Field 1.25" Eyepieces | Orion Telescopes

    The Expanse 9mm eyepiece was a workhorse for me years ago. Also, still within a reasonable budget, but with even better quality, I have liked these 70 degree eyepieces from University Optics at:

    Eyepieces - 1 1/4" Oculars from University Optics

    However, in the last few years, I have been upgrading to the Explore Scientific widefield eyepieces, but in the 2" barrel size. While certainly not inexpensive, they represent a top value for the money. I hope this helps, and best wishes on your next eyepiece choice.
    - Marshall

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    Lightbulb Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    Hi LD. I would go along with some of the other members and work on your alignment over spending on a EP just to get a target in your FOV. Although a
    32mm or 42mm EP is great to have on hand for observing I hope you understand where it is we are coming from here.
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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    At about a 65 degree field of view-- the GSO superview of eyepieces are very good for the low cost-- in a mid priced eyepiece all of the Hyperion brand eyepieces are very good, along with the Orion Stratus line of eyepieces. None of these will "break the bank" but are good value for the money.
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    Default Re: Can anyone recommend a good 1.25" Orion wide-field eyepiece?

    Thanks for the great input. I was thinking of Orion eyepieces because my other ones are all Orions. Maybe I should consider other brands. Yeah, I know I have a lot to learn about this hobby. I guess my scope needs some adjustment for better GoTo functioning. Thanks again to all.

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    SCOPES: Celestron Nexstar 8i, Celestron Nexstar 5SE. Eyepieces: Orion ED-2 25mm (1.25"), Orion ED-2 9.5mm (1.25"), Orion Edge-On Planetary 5mmEP (1.25"), Celestron 1.25" diagonal, Telrad, Celestron 2x Barlow, Teleview 2.5x Barlow, 8-24mm zoom eyepiece, Celestron LPR filter, Celestron f 6.3 reducer/corrector, Lumicon 1.25" rotating polarizer, Celestron color filters (#21, 80A, 56, & 96). MISC: Duralast 12 volt 230 amp battery, black flexible dew shield for N8i, Celestron 7 amp Powertank. Note, most of my equipment was bought used in a great package deal.

 

 

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