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Thread: Accessories questions

  1. #1
    Amitiel's Avatar
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    Default Accessories questions



    What kind of Accessories can I purchase for my Orion Space Probe that will give me more enjoyment in viewing the stars. I would like to see some nebula. Would a 3X Barlow work. I tied a 5X times Barlow but it was too much for my telescope.

  2. #2
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    Default Re: Accessories questions

    You should create a signature so others will know what size telescope you are asking about.
    For visual a 2x barlow will be enough but it also depends on what eyepiece focal lengths you currently have.
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    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
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    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)

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  3. #3
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    Default Re: Accessories questions

    Many people starting out get hung up on magnification, but that's not really what our hobby is about. And high magnification is only useful in a relatively few occasions. I believe you should concentrate on lower power to observe most DSOs.

    Most nebulae will require that you are observing from a DARK location.

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    120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk BT-82XL-ED, 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader
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    Default Re: Accessories questions

    I assume you have the Orion SpaceProbe 130ST? I believe this comes with 25mm and 10mm plossl eyepieces, giving magnifications and field of view of 26x with roughly 2-degree fov, and 65x with roughly 45 minute fov respectively. For planetary viewing you might want either a 2x barlow for the 10mm eyepiece, or a 5mm eyepiece. This will give you 130x and enable you to see the rings of Saturn, several cloud bands on Jupiter and (maybe) the GRS, etc. You may be able to go higher on a good night with (say) a 3mm eyepiece (217x), but you are also getting a very small exit pupil (just over 1/2mm), which means the view may be degraded by imperfections in your eyes (like "floaties") and wont be as high contrast as with the 5mm eyepiece (and its 1mm exit pupil).
    For larger nebulae (like the Orion Nebula or Andromeda) the supplied 25mm eyepiece should give nice views from a dark site. 15mm and 10mm (like the one you have) eyepieces will enable you to get closer views of smaller DSO's while still having high contrast. Many people believe that 2-3mm exit pupil (ie from these FL eyepieces) is ideal for DSO's.

    You can look at some of the more expensive eyepieces to give wider FOV, like the ES 68 or 82-degree series, but I would suggest you work with what you have got for a while so that you know what you want (and give you a chance to save up!). Plossl eyepieces such as the ones supplied give good views for the price, but the FOV is relatively narrow in comparison to the more expensive ones.

    However, personally I think the first and best observing accessory you can get to give you more enjoyment is an adjustable observing chair!

    All the best,

    Dean
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    Default Re: Accessories questions

    You are correct, I have the Orion Spaceprobe 130ST. Im having a blast looking at the stars that I can see and have seen the things of Saturn and what I am assuming the clouds of Saturn. I shoo have filters as well. Can't wait to see Mars hopefully. I have the eye pieces that came with the telescope as well as the Gosky 1.25-Inch Premium Telescope Accessory Kit (Silver)- 5pcs Plossl Eyepiece Set, 7pcs Filter Set, 2X Barlow Lens. It contains the following: 40 mm Plossl Eyepiece
    20 mm Plossl Eyepiece
    12.5mm Plossl Eyepiece
    8 mm Plossl Eyepiece
    6mm Plossl Eyepiece
    Specifications: Fully multi-coated/ 4 element optical design / 52 degrees field of view / Filter thread /Standard 1.25" barrel


    2X Barlow Lens - 1.25":
    Specifications: Doubles the magnification of any eyepieces, effectively increasing the range of available magnifications


    Filters:
    #82A Blue Filter
    #56 Light Green Filter
    #23 Red Filter
    #21 Orange Filter
    #12 Yellow Filter -
    Moon Filter
    Polarizing Filter(Single)
    Specifications:
    Help bring out certain details on the planets
    - Moon filter helps reduce the negative effects of glare for a more detailed and comfortable observation
    1.25” filter threads on the filters.

    Hopefully this was a good purchase.

  6. #6
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    Default Re: Accessories questions

    The eyepieces will get you viewing and you will figure out which focal lengths you like the most before upgrading.
    The Moon filter will be handy, the coloured filters will be a personal decision.
    Enjoy the views with your telescope
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    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" Orion Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

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    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)

  7. #7
    bertha01's Avatar
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    Default Re: Accessories questions

    Tagged, this seems like a very interesting thread

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    Default Re: Accessories questions

    Quote Originally Posted by bertha01 View Post
    Tagged, this seems like a very interesting thread
    Are you considering a purchase of anything in particular?

    If you are just starting, perhaps you should give this thread a look. https://theskysearchers.com/viewtopic.php?f=4&t=331

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    120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk BT-82XL-ED, 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader
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    &SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

 

 

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