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Thread: Eye Pieces?

  1. #1
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    Default Eye Pieces?



    I'm sure this has been well covered, but I couldn't find it searching the forum. I was curious what size eye pieces would be a good start, currently I have a 25mm, 9.7mm, which I understand will give me a magnification of 53 and 136.5 respectively. Due to cloud cover I haven't a good chance to test them out.
    I should also add I have a 2x Barlow, moon filter, and considering a solar filter.
    Thanks

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    Default Re: Eye Pieces?

    Welcome to the forum What kind of scope do you have?

    I'd say you already have a fair range to start with, but a 16mm would be a good addition. I can recommend the one in my signature. If you're hungry for power, maybe a 6mm, but might only be usable when seeing is excellent.
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    Raymond Howard
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    12.5" f/6 custom Dob by New Moon Telescopes, Orion XT8 f/6 "ruby-red" Dob. Finders 13x80 Stellarvue RACI, 9x50 Orion RACI. Eyepieces 34mm Explore Scientific 68°, 24mm ES 68°, 16mm ES 68°, 10mm TeleVue Delos 72°, 7mm TeleVue DeLite 62°.

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    Default Re: Eye Pieces?

    Yeah, it would help to know which scope you have. But I think most 1325mm scopes are maks, about 100mm.

    Double your f number is usually good, on an f / 13 26 would be good, 25mm might be good. You already have one of those, the 9.7mm should be good for planets. I'd probably go for a wider one, maybe 32-40mm, not sure if this is will give a wider field, but should give a brighter view.

    The ones you have are good to start with, 53x for dso's and the other for planets and planetary nebulae, when needed.

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    Default Re: Eye Pieces?

    Hi, Thanks for the replies, I have a Celestron 4se, forgot to add that.
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    Default Re: Eye Pieces?

    Oh, Ok, yeah, 53x is probably close enough to 2mm exit pupil. I'd probably get a 40mm. I've had good luck with a 36x on 4.5 ", and that would be similar magnification.

    Not sure if you would get the full 43-50°, but it should brighten things up.

    I don't go more than 60x really often on my 4.5 ", but if you really like planetary nebulae, you might want one between the 53x and the 9.7mm. Also Orions nebula is nice at a bit higher magnification, maybe 60-90x. So one in that range might be good.

    I haven't stargazed under a lot of lp, not sure if higher magnification would help, kind of doubt it.
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    Default Re: Eye Pieces?

    You might read these excellent posts. They are well-written and highly informative.

    A Treatise on Optimizing Planetary Views

    A Treatise on Optimizing DSO Observation
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    "Astronomy compels the soul to look upwards and leads us from this world to another." — Plato
    Celestron 8SE, assorted oculars from 6 to 26mm.

 

 

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