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Thread: GSO Cassegrains

  1. #11
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    Default Re: GSO Cassegrains



    Interesting. Considering central obstruction and spider vanes is this claim justified?

    "it’s ideal for crisp and razor-sharp visual observation and imaging. This telescope offers views that rival apochromatic refractors"
    Scopes: Celestron: 8" SCT F10, Omni 150R Achro F5, Onyx 80ED F6.3, Mak 127mm F12; Meade: ST80 F5. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, AzGTi, UA MicroStar. Binos: Orion 15x70, 10x50, Nikon 8x40. EPs: Pentax: XWs; TeleVue: Delites, Plossls & barlows; ES: 68s; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV; Meade: UWAs & Plossls. Diagonals: Baader: BBHS mirror, Zeiss Spec prism, Clicklock; TeleVue: Evebrite. Filters: Lumicon, Baader, Astronomik. DSO tally: 1333 (Completed: M110, H1, H2. In progress: H3: 115, H2,500: 962, S110: 73). Doubles: 772, Comets: 11, Asteroids: 59

  2. #12
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    Default Re: GSO Cassegrains

    Quote Originally Posted by Bigzmey View Post
    Interesting. Considering central obstruction and spider vanes is this claim justified?

    "it’s ideal for crisp and razor-sharp visual observation and imaging. This telescope offers views that rival apochromatic refractors"
    Secondary obstruction is 33% according to the specs so that is significant.....
    Michael
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  3. #13
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    Default Re: GSO Cassegrains

    Quote Originally Posted by not_Fritz_Argelander View Post
    Teleskop Service sells the same OTA and recommends a RC reducer https://www.teleskop-express.de/shop...es-ab-F-8.html
    I notice in that product description it states "works good with Celestron EHD...etc..." I wonder how similar it is to the dedicated EHD FR's. It's definitely a lot cheaper, even with exchange rate.
    ~Frankie~ My mind: Always on...Slightly off.
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  4. #14
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    Default Re: GSO Cassegrains

    Quote Originally Posted by not_Fritz_Argelander View Post




    What Vixens are being phased out?!! The VMCs??
    Yes unfortunately, Vixen made the announcement in December that they would be phased out this year 2019. No replacement has been announced at this time.
    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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    The weakest link in the optical chain is the large nut located directly behind the
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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)

  5. #15
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    Default Re: GSO Cassegrains

    Quote Originally Posted by SpyderwerX View Post
    I notice in that product description it states "works good with Celestron EHD...etc..." I wonder how similar it is to the dedicated EHD FR's. It's definitely a lot cheaper, even with exchange rate.
    I suspect that I'll try the Astro Physics reducer first, since I already have it. About the same price.

    https://telescopes.net/store/astro-p...SABEgI1IfD_BwE

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  6. #16
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    Default Re: GSO Cassegrains

    Quote Originally Posted by Gabby76 View Post
    Yes unfortunately, Vixen made the announcement in December that they would be phased out this year 2019. No replacement has been announced at this time.
    I vaguely remember your telling me that before, sorry for being dotty.

    I’ve been following the pricing, noticing large swings on the 8” costs. Should have been less disciplined.

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    Default Re: GSO Cassegrains

    I was looking at the VCM200 again so I need to either make up my mind, start planning on used or wait for reviews of these GSO offerings.
    A Intes MN or MC is still a possible option later on also.
    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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    The weakest link in the optical chain is the large nut located directly behind the
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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)

  8. #18
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    Default Re: GSO Cassegrains

    Quote Originally Posted by Gabby76 View Post
    I was looking at the VCM200 again so I need to either make up my mind, start planning on used or wait for reviews of these GSO offerings.
    A Intes MN or MC is still a possible option later on also.
    Intes is dead. Long live Intes Micro. Same opticians, less abuse of the workers.
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    Default Re: GSO Cassegrains

    Even Intes Micro is in a bit of a slow down as most of the optical work has been turned over to military optics right now.
    Some things are getting scarce if it comes from Russia or Ukraine.
    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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    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)

  10. #20
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    Default Re: GSO Cassegrains

    Quote Originally Posted by Gabby76 View Post
    Even Intes Micro is in a bit of a slow down as most of the optical work has been turned over to military optics right now.
    Some things are getting scarce if it comes from Russia or Ukraine.
    Yes. I’ve noticed a distressing decrease in the number of offerings. I (very much, is an understatement) prefer Rutten Maksutov designs to silver spot Maksutovs. The GSO offerings of Rutten Maks are good for AP but are lacking visually.

    An alternative to my making a Houghton Cassegrain is a Classic.
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