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pgwenlan

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Posts posted by pgwenlan

  1. Don't know how you do that.

    Unless I've mis-read, Chn has the "Synscan goto" - which does not need to start from any particular position; and locates itself via the 2-star alignment.

    It takes a bit of practice, but once you have the hang of it, it takes just a couple of minutes to be up & running. It also has "brightest star alignment", but I've found "2 star" so easy.

    That may also be why "parked position" is only very briefly mentioned in it's particular manual...

  2. I have the same 'scope, and don't start from "parked", because my position will change from session to session.

    I assume that you are doing a "2 star alignment"? If so, it WILL be off on the 2nd star - it needs you to tell it where that star is.

    When you say "miles off", how far do you mean? Sometimes mine can be several degrees; but it doesn't know where you are specifically - the lat/log is only accurate to about 100m, and there is no allowance for height above sea level - hence it needs you to centre on the 2nd star...

    Use as high a magnification eyepiece as you can to get more accuracy - but on the 2nd star you will probably need to go back to a 25mm or so to find it initially, then drop to a smaller eyepiece to centre it in...

    Also, don't rely on batteries - they won't last long at all!

    Hope that helps!!

    Peter

  3. But the book is aimed at people with manual scopes.

    True - but sometimes I've found, even with a GOTO, that it is very useful. When looking for really feint objects it is helpful to know what stars are in the vicinity, just to know that the 'scope is in the correct portion of sky! And the pictures in TLAO show good realistic views as seen through a 'scope.

    +1 for TLAO!!

  4. The finished webcam mod complete with film canister cap to keep sensor dustfree in storage :hello2:

    The lens cone enlarged with a file [prior to completion!] to ensure no vignetting of the sensor by a fast lens system.

    Many thanks for the mod pics - very helpful. I hope to get mine up & running soon............

    Cheers,

    Peter

  5. Hi all,

    Has anyone tried to piggyback a Handicam, or similar video camera, to take videos (obviously!) which can then be converted to avi and registacked, etc, as per a webcam?

    I've tried a search here, but can only find one referrence back in 2007...

    The cam has an optical zoom of 40x and a digital of 2000x.

    Any ideas would be welcome, or have I missed something?

    Thanks,

    Peter

  6. Just had my first decent view of Saturn with the SW 127 GOTO - fantastic!

    And my daughter got to see it for the first time ever - I think the neighbours might have heard the "Oh wow" moment!

    Unfortunately it's not truly dark here yet (10pm) and I can't stay out late (early morning...), but it was so worth it!

    Only have the SW kit eyepieces, but even the 10mm with the 2x barlow gave reasonable views.

    I think some new ep's are in order!! Must start saving - again...

    • Like 1
  7. I was looking for soemthing similar and found this...

    Not a tray for an existing tripod but a combined Bag/Tray and tripod...

    Capiz Projector Tripod Stand Tray & 15.4" Laptop Netbook Notebook Bag Briefcase | eBay

    Peter...

    Hi Psychobilly,

    Yes, I saw that as well. The "Tripad" does away with the need for an additional tripod - I didn't see the advantage with the projector stand over using a small table as I do now...

    Maybe it will come to the UK in the course of time!!

    Or perhaps some inventive soul on here can come up with a useful DIY alternative!!

  8. Hi all,

    Just though I'd share this piece of free software:

    "The Photographers Ephemeris"

    It can be downloaded at:

    stephentrainor.com: tools

    Designed, obviously, for photographers, but useful for astronomy:

    It shows the time and position of sunrise, moonrise, sunset, moonset, civil, nautical & astronomical twilight - all linked to google earth.

    I've found it very useful for gettiing the position of the sun & moon within the confines of my garden, as well as any other places visited, and for any date in the future.

    Hopefully some will find it as helpful as I have!

    Regards,

    Peter

  9. What do you mean in black and white !!? :icon_salut::icon_scratch::D

    Our eyes "see" using cones & rods in the eye. The cones are less sensitive but can see colour, the rods more sensitve but see only black & white.

    As the stars, etc, are so far away and therefore relatively dim, the rods pick up the image for our eyes - and so we see the night sky in black & white with the naked eye or the telescope.

    However, a camera or a webcam, having a much greater exposure time, is able to detect the colour of the objects - hence the colour pics that we enjoy.

    I hope you understand what I mean!

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