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  1. #1
    Spud S.'s Avatar
    Spud S. Guest

    Default Meade ETX 125 solar filter?



    Does anyone have any experience and/or recommendations using solar filters
    with this scope?



  2. #2
    Tandy W. Carter Jr.'s Avatar
    Tandy W. Carter Jr. Guest

    Default Meade ETX 125 solar filter?

    Hi Spud,

    Even though I have a much larger telescope, using a solar filter is very
    easy. The only difficulty is getting the sun aligned in the eyepiece. The
    only safe way to do it is to use a piece of white paper on a clipboard and
    project the sun on the paper. When the sun is aligned on the crosshairs of
    the finder scope the sun will be in the eyepiece of the main telescope. Put
    the cover back on the finder scope to protect the finder scope and prevent
    the possibility of someone accidentally getting a view of the unfiltered
    sun.

    There are many sources of good quality solar filters. I would recommend
    an aluminized Mylar filter. They are relatively inexpensive and give all the
    safety you need.


    "Spud S." <dean_s@bluelakeproducts.com> wrote in message
    news:j8C0b.526$lw4.145@newsread3.news.pas.earthlin k.net...



  3. #3
    Astronut's Avatar
    Astronut Guest

    Default Meade ETX 125 solar filter?

    Or, with the Baader (Mylar) filter in place, take the eyepiece out of
    the focuser, and you'll have a much better time at getting the Sun
    aligned. Make sure you are using the VISUAL film 5.5ND, and not the
    PHOTOGRAPHIC 3.8ND, which is too bright to do this step without a
    further ND13 filter on the eyepiece.

    Good luck.

    You can order the filter and cell from www.earthandskyshop.ca
    Same price as www.kendrick-ai.com


    Cheers.


    --
    Gil Tennant
    Night Sky Tours - Bringing the Universe to you...
    www.nightskytours.ca


  4. #4
    Tandy W. Carter Jr.'s Avatar
    Tandy W. Carter Jr. Guest

    Default Meade ETX 125 solar filter?

    Hi Roger,

    "Roger Hamlett" <rogerspamignored@ttelmah.demon.co.uk> wrote in message
    news:adM0b.15905$Kx1.249126@newsfep4-glfd.server.ntli.net...
    The
    and
    of
    prevent
    aim
    the
    tube,
    all
    component
    focussed

    I suppose safety is in the eye of the beholder.;{) This is the way I
    have always aligned the sun with my 8" LX200. I have tried the shadow method
    you mention, but I've found that the sun is not always in the eyepiece. I
    never leave the cover off the finder any more than necessary. I guess the
    finder scope on my 'scope is a better quality finder than on the ETX.:{)



  5. #5
    Roger Hamlett's Avatar
    Roger Hamlett Guest

    Default Meade ETX 125 solar filter?


    "Tandy W. Carter Jr." <tandy.carter@att.net> wrote in message
    newsl51b.107706$3o3.7576892@bgtnsc05-news.ops.worldnet.att.net...
    is
    crosshairs
    telescope.
    unfiltered
    as
    inside
    place,
    a
    method
    Yes. On the 8" scopes, the finder is a much larger unit, with a metal tube.
    I'd suspect the reticule could still be damaged if it was left pointed at
    the Sun for any length of time (remember the light is focussed at the
    reticule). On the ETX, the finder is a much smaller unit, with the lens
    mounts at each end of the tube being plastic. If aimed slightly 'off' the
    Sun, it is asking to melt...
    Generically, I have an aversion to ever having an unfiltered/uncapped optic
    aimed at the Sun, but done carefully, with an optic that is reasonably
    built, it is OK really.
    On the LX, you have an 'accuracy' problem with this approach, because the
    front corrector surround is a lot larger than the tube. On the ETX, because
    it has a parallel tube at the front, the 'shadow' alignment is a lot more
    accurate. :-)

    Best Wishes



 

 

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