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Thread: Article: What Astronomy Eyepieces should I get for my Telescope?

  1. #11
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    Default Re: What eyepieces should I get?



    Thanks Gabby! Great article!
    Gabby76 likes this.
    Steve
    Scopes:C8 XLT, SV80ST triplet, ES AR102, 1979 Meade 826 8" Newt Mount: NEQ-6 Pro, CG5 Eyepieces:ES 70 Series 25mm 2", 82 Series 18mm 2", 82 Series 11mm, 82 Series 6.7mm and various Celestron cheapies Camera: Canon T3i, Canon XSi(450D) Baader BCF1 modded Guider: Orion MMAG Binoculars: Celestron SkyMaster 15x70. Do not underestimate the powers of a Dark Site!

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    Default Re: What eyepieces should I get?

    Exit pupil and eye relief are related.
    Exit pupil is an important item as it directly affects how much light is entering your eye when viewing.
    Depending on the type of object there is a "best" exit pupil to help you see it, be it splitting double stars, planetary viewing or galaxy hunting.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2"
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    Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the
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    / camera. - Gabrielle

    Ya gotta keep this Apo/
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    thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)

    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

  3. #13
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    Default Re: What eyepieces should I get?

    Me likey, but I haven't used math in decades. So I will learn two new skills again.
    Mark O'Rourke
    Scope:Early 90's Meade 10 inch/254mm Starfinder GEM (German Equatorial Mount)
    Finders:Telrad and GSO 8X50 RACI (Right Angle Correct Image)

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    Default Re: What eyepieces should I get?

    I have converted Gabby76's write up into a PDF.
    With her permission I will post it here so if your like me and like reading stuff on the local machine then you can download.
    Thanks again Gabby76 for this write up. Hopefully I can get past the first eyepiece. LOL
    Attached Files Attached Files
    Mark O'Rourke
    Scope:Early 90's Meade 10 inch/254mm Starfinder GEM (German Equatorial Mount)
    Finders:Telrad and GSO 8X50 RACI (Right Angle Correct Image)

  5. The Following 2 Users Say Thank You to Wildrat For This Useful Post:

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    Default Re: What eyepieces should I get?

    Here is another good read on eyepieces.
    A Guide to Eyepieces
    Mark O'Rourke
    Scope:Early 90's Meade 10 inch/254mm Starfinder GEM (German Equatorial Mount)
    Finders:Telrad and GSO 8X50 RACI (Right Angle Correct Image)

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    Default Re: Article: What Astronomy Eyepieces should I get for my Telescope?

    Thanks Gabby, promoted to the front end!
    How to Select Eyepieces for your Telescope
    Name: Gus OTAs: ED 100 PRO refractor, Orion ST80 (not the CF), 8" Dob stuck in Canada Mounts:HEQ5PRO Synscan mount, Manfrotto Tripod CAMS: Guidecam Philips SPC900 webcams (4), Canon unmodded-450D DSLR

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    | My Astronomy Blog

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    Default Re: Article: What Astronomy Eyepieces should I get for my Telescope?

    I checked my math with this.
    Telescope Calculator - Sky & Telescope
    Mark O'Rourke
    Scope:Early 90's Meade 10 inch/254mm Starfinder GEM (German Equatorial Mount)
    Finders:Telrad and GSO 8X50 RACI (Right Angle Correct Image)

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    Default Re: Article: What Astronomy Eyepieces should I get for my Telescope?

    Great lesson Gabby. Thank you.
    Gabby76 likes this.
    Mark

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    Default Re: Article: What Astronomy Eyepieces should I get for my Telescope?

    I am finding occasionally I will combine a lower mag EP with my barlow and it may been vlose to the mag of a higher EP without the barlow, but it feels easier to see. Is this my imagination or is there sone reason for this?
    Mark

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    Default Re: Article: What Astronomy Eyepieces should I get for my Telescope?

    A barlow will keep the eye relief of the longer focal length eyepiece so is easier to use. In some situations it can even extend the eye relief a bit.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2"
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    / camera. - Gabrielle

    Ya gotta keep this Apo/
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)

    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

 

 
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