MI5 Persecution: Home Office MI5 Liaison won't comment

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Date: 29 Nov 2006 21:43:16
From:
Subject: MI5 Persecution: Home Office MI5 Liaison won't comment

Home Office MI5 Liaison won't comment

I wrote to Jack Straw, Home Secretary, in early 1999, following an article in the Times in which he spoke of his "close
monitoring" of the Security Service. My letter asked him if he had "authorised any surveillance or harassment actions against
me". He didn't reply himself, but passed on my request to the Home Office's Organised and International Crime Directorate
(how appropriate for an international master criminal like myself), and specifically their Intelligence and Security Liaison
Unit. They first made a fairly vacuous response; after further prodding, they made a further response, shown here.

So there you are. Zip the lips, lie low and say nuthin. Open government? That'll be the day.

416

--
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Date: 29 Nov 2006 19:31:29
From: Joe S.
Subject: Re: Collimation

Date: 29 Nov 2006 18:11:22
From: Dennis Woos
Subject: Re: Collimation

"Steve & Lizzie" <steveandlizzie@blueyonder.co.uk > wrote in message
news:0Jnbh.34807$qd7.25319@fe1.news.blueyonder.co.uk...
> Hello to all.
>
> I'm a struggling amateur trying to get to grips with collimating my
> Skywatcher 130P (focal length 650).
>
> I've had the scope for about six months now and had a go at collimating
> sometime back - I had some excellent advice from this group as to links
> etc
> and found a lot of clear information online (thanks again for the help!).
> When I finally plucked up the nerve to have a go, I found that I needed to
> perform a lot of adjustment on the secondary mirror - both tension of the
> vanes and angle of the mirror.
>
> Since this time I've still been having problems focusing and the usual
> star
> tests led me to believe that my attempts at collimation had been less than
> successful. To save further struggling I decided to by a laser
> collimator -
> sure enough when I fitted this the collimation was some way out (the laser
> collimator is a reasonable one and the laser alignment looks good). It
> won't
> surprise anyone to hear that I had to do a lot of adjustment to the
> secondary to get the laser to centre on the primary! Using this device I
> was
> able to get everything lined up, however when I took the device out and
> had
> a visual inspection of the view down the focuser - the results looked
> rather
> unlike the pictures/descriptions I have of a collimated scope . The
> reflection of the primary's centre circle look to be off to one side etc.
>
> I am now concerned that my initial (and maybe subsequent) fiddling has put
> things so far out of true that I'm just making matters worse. Please can
> anyone tell me is this a genuine concern or if the laser shows a good
> result
> can I relax a little? I haven't had chance to try the scope again yet so I
> don't know how it will perform and as a rank amateur it would be easy for
> me
> to blame my equipment instead of my own bad practices.
>
> Thanks very much for any advice given.
>
> Steve
>

If you are collimated, then everything should line up when you center your
eye over the focuser. If not, then you have something out-of-whack. I am
assuming that your focuser is square with the tube.

First off, make sure that the secondary mirror is positioned in the center
of the tube. If it isn't, you can adjust it by loosening and tightening
opposing spider vanes. Secondly, make sure that the secondary mirror is
properly positioned under the focuser. Look at the secondary through the
focuser, and ignore what is reflected in the secondary. The secondary
should look round and centered in the focuser. If it isn't round, rotate it
to make it look round, and move it forwards or backwards to get it centered
under the focuser. Now adjust the tilt of the secondary so that the center
spot of the primary is in the center of the secondary. The laser can also
be used for this - do you understand that your eye and the laser must
produce the same result, given that you position your eye along the same
axis as the laser? Finally, adjust the tilt of the primary such that the
laser beam returns to itself.

This can be an iterative process if stuff is really out-of-whack, so after
doing all of the above check it again. The second time should require only
small adjustments. Think about what it is you are doing and seeing - I
promise that there is nothing hard about it once you get it.

If all else fails, go to your local astro club where you will find folks
that can show you how to collimate your scope in a few minutes. You should
join a club in any case - great fun and you will learn a lot.

Dennis

Date: 30 Nov 2006 02:57:56
From: Humble Pie
Subject: Re: Collimation

Steve & Lizzie wrote:

>
> I am now concerned that my initial (and maybe subsequent) fiddling has put
> things so far out of true that I'm just making matters worse. Please can
> anyone tell me is this a genuine concern or if the laser shows a good result
> can I relax a little?

>
> Steve

Very simply the answer is yes. You can get things 'so far out of
whack' that it becomes difficult (for the beginner) to bring things
back on center, without starting from scratch, fresh - and that is
exactly what you should do. Put the laser away.

The good news is, even an experienced collimator starts fresh and
covers the basics, on every ocassion.

Do the basic mechanical part of collimation first. If the mechanical
part is done correctly then the optical part will follow with better
results. Go to the websites suggested by others here or do a Google
search on "collimation" and do the "mechanical" part of collimation.
When that is complete do the optical part.

The mechanical must precede the optical. Both go together.

Good luck -