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  1. #1
    Robin Leadbeater's Avatar
    Robin Leadbeater Guest

    Default Two comets seen on Friday



    I managed to spot both 2PEncke and T7 Linear in my 80mm f5 refractor with
    9mm eyepiece on Friday. 2P is now obvious though very diffuse and moving
    quite fast. Should be worth going after with binoculars before the moon
    returns.
    T7 was just like a faint star (~mag10?) and moving very slowly. I had to
    compare with the CCD image to pick it out from the other stars in the
    eyepiece. Images of both comets and a 2P animation are on my website here.

    (There's a Pleiades image there taken the same night which I am quite
    pleased with too - top link in the image index)

    http://mysite.freeserve.com/astro2/astro2_image_59.htm

    Robin
    ----------------------------------------------------------------
    Robin Leadbeater
    N54.75 W3.24
    www.leadbeaterhome.fsnet.co.uk/astro.htm
    ----------------------------------------------------------------



  2. #2
    Lawrence's Avatar
    Lawrence Guest

    Default Two comets seen on Friday

    Hi Robin

    I suppose the operative words here are 'seen' and 'spot'. During the
    clear nights of several days back, I took a series of CCD images of 4 or
    5 comets during the night. There are several bright enough for imaging.
    I use Guide-8 updated from MPC, and it shows how many there are at any
    given time and magnitude. One could easily spend all-night just
    collecting cometary images!

    Lawrence Harris


    On Sun, 23 Nov 2003 15:22:09 -0000, "Robin Leadbeater"
    <robin_astro@nospamhotmail.com> wrote:

    snip



  3. #3
    Robin Leadbeater's Avatar
    Robin Leadbeater Guest

    Default Two comets seen on Friday


    "Lawrence" <lawrence@astronomer> wrote in message
    news:2e748affc2423e1133cacf6760023f4a@news.teranew s.com...
    Hi Lawrence,

    I must admit, I let the GOTO do the hard work ;-) but at least 2P is clear
    visually in a small aperture now. I could not see it in the eyepiece a week
    ago. T7 is going to be interesting to follow as it brightens

    Robin



  4. #4
    Robert Geake's Avatar
    Robert Geake Guest

    Default Two comets seen on Friday

    On Sun, 23 Nov 2003 15:22:09 -0000, "Robin Leadbeater"
    <robin_astro@nospamhotmail.com> didnt really know what to say untill:

    :>|I managed to spot both 2PEncke and T7 Linear in my 80mm f5 refractor with
    :>|9mm eyepiece on Friday. 2P is now obvious though very diffuse and moving
    :>|quite fast. Should be worth going after with binoculars before the moon
    :>|returns.
    :>|T7 was just like a faint star (~mag10?) and moving very slowly. I had to
    :>|compare with the CCD image to pick it out from the other stars in the
    :>|eyepiece. Images of both comets and a 2P animation are on my website here.
    :>|
    :>|(There's a Pleiades image there taken the same night which I am quite
    :>|pleased with too - top link in the image index)
    :>|
    :>|http://mysite.freeserve.com/astro2/astro2_image_59.htm
    :>|
    :>|Robin
    :>|----------------------------------------------------------------
    :>|Robin Leadbeater
    :>|N54.75 W3.24
    :>|www.leadbeaterhome.fsnet.co.uk/astro.htm
    :>|----------------------------------------------------------------
    :>|

    I tried to spot 2p about 2 weeks ago (last time se weather was good)
    and found it to be quite dim. Has there been an increase in mag
    latley?


    Rob


  5. #5
    Robert Geake's Avatar
    Robert Geake Guest

    Default Two comets seen on Friday

    On Mon, 24 Nov 2003 13:15:38 +0000, Robert Geake <rob@thegeakes.co.uk>
    didnt really know what to say untill:

    :>|On Sun, 23 Nov 2003 15:22:09 -0000, "Robin Leadbeater"
    :>|<robin_astro@nospamhotmail.com> didnt really know what to say untill:
    :>|
    :>|:>|I managed to spot both 2PEncke and T7 Linear in my 80mm f5 refractor with
    :>|:>|9mm eyepiece on Friday. 2P is now obvious though very diffuse and moving
    :>|:>|quite fast. Should be worth going after with binoculars before the moon
    :>|:>|returns.
    :>|:>|T7 was just like a faint star (~mag10?) and moving very slowly. I had to
    :>|:>|compare with the CCD image to pick it out from the other stars in the
    :>|:>|eyepiece. Images of both comets and a 2P animation are on my website here.
    :>|:>|
    :>|:>|(There's a Pleiades image there taken the same night which I am quite
    :>|:>|pleased with too - top link in the image index)
    :>|:>|
    :>|:>|http://mysite.freeserve.com/astro2/astro2_image_59.htm
    :>|:>|
    :>|:>|Robin
    :>|:>|----------------------------------------------------------------
    :>|:>|Robin Leadbeater
    :>|:>|N54.75 W3.24
    :>|:>|www.leadbeaterhome.fsnet.co.uk/astro.htm
    :>|:>|----------------------------------------------------------------
    :>|:>|
    :>|
    :>|I tried to spot 2p about 2 weeks ago (last time se weather was good)
    :>|and found it to be quite dim. Has there been an increase in mag
    :>|latley?
    :>|
    :>|
    :>|Rob
    My old companion Ceil tells me that it has increased by several
    magnitudes of brightness from 14 to 8. Easy pickings now!

    This will be my first observation of a comet....Ooo i could crush a
    grape!

    Rob

  6. #6
    Joerg Glissmann's Avatar
    Joerg Glissmann Guest

    Default Two comets seen on Friday

    On Mon, 24 Nov 2003 13:22:11 +0000, Robert Geake <rob@thegeakes.co.uk>
    wrote:


    errm.. excuse the question showing my utter inexperiencedess at watching
    comets:
    You're talking about motion there. Can you actually detect the motion of a
    comet when vewing it through a scope? I.e. is it moving relative to the
    stars around it? (The image in above website certainly looks like it.) If
    so, over what period of time do you have to watch to detect the motion?
    Is it days / many hours or rather a matter of a quarter of an hour?
    (I suppose it depends to a great deal on magnification, let's assume a
    magnification of 100x-200x)

    Thanks,

    Joerg

    --
    Joerg Glissmann

    remove pants to reply..

  7. #7
    Robin Leadbeater's Avatar
    Robin Leadbeater Guest

    Default Two comets seen on Friday


    "Joerg Glissmann" <spampants@glissmann.de> wrote in message
    newspry5bytt3dt6j3n@news.cybernet-ag.de...

    Hi Jeorg

    My animation of 2P Encke is time lapse. It shows how far the comet moved in
    about 20min. To give you an idea of the movement, the field of view in the
    animation is (very roughly) what you might expect to see in the eyepiece at
    200x magnification. 2P Encke is nearing perihelion which is the point in its
    orbit when it is closest to the sun and moving fastest. It is also
    relatively close to us and we are probably viewing it at quite an angle to
    its direction of motion too so it appears to move quite fast against the
    background stars. T7 Linear has a distance to run before it reaches
    perihelion in (I think) March next year so it is further away and not moving
    as fast. The motion against the background stars is therefore much less at
    the moment. More distant comets appear almost stationary and may take
    several days to show any appreciable motion

    Robin



  8. #8
    Joerg Glissmann's Avatar
    Joerg Glissmann Guest

    Default Two comets seen on Friday

    On Mon, 24 Nov 2003 20:38:23 -0000, Robin Leadbeater
    <robin_astro@nospamhotmail.com> wrote:


    Hi Robin,

    thanks for answering.. and for pointing out things that are rather obvious
    if you don't just look at your T7 Linear picture, but also at the one of 2P
    Encke and its animation.. (*duh* :-)

    Joerg

    --
    Joerg Glissmann

    remove pants to reply..

 

 

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