(meteorobs) Perseid report

[Paul Roggemans]

Poor sky at my home (Mechelen, Belgium) with stars of +3 barely visible due
to cirrus and thin cloud, no way for visual observing. However my 4 Watec
cameras, each with a small FOV (22° x 30°) captured as many as 360 meteors
in 7,41 hours. Most meteors were Perseids and relative bright. Looks like
we got a normal return with very nice hourly rates. My cameras are part of
the Benelux CAMS network which aims to obtain meteor orbits, therefore it
is difficult to value the activity in terms of hourly rates or ZHRs. In
total the network has 47 operational cameras More about CAMS can be found
here: http://cams.seti.org/easyCAMS.html. I uploaded a selection of
brighter meteors on my Facebook page.

Clear skies,

Paul Roggemans

On Wed, Aug 12, 2015 at 9:45 PM, Ed Majden <epmajden at shaw.ca> wrote:

> Rascals:
>  I set up an experimental image intensifier spectrograph and secured a few
> spectra.  I was using a Grade B surplus Philips XX1332 image intensifier I
> bought from a surplus dealer in the UK.
>
> See:
> http://www.abex.co.uk/sales/optical/night_vision/intensifiers/xx1332/index.htm
>
> The intensifier proved to be very noisy and there were other spectra
> produced by lights, out of the field of view.  I used an Optec LLC 300 g/mm
> blazed transmission grating on a Bronica F-2.8 - 100mm f.l. lens.  The
> spectra are of questionable quality because of the intensifier noise etc.
> It will take me awhile to download and examine these spectra to my
> computer.  They were recorded on a VCR video tape which uses NTSC so is not
> compatable with the European system.  My tape ran out around 1:30 a.m. PDT
> and some hase was present so I went to bed.  No time/date stamp was used.
> If the spectra look worthwhile I will try and capture them and send you
> samples.
>     If its clear out tonight I will try again.  Hard for this old goat to
> stay up all night, ha! ha!   Never did try my DSLR as I did not have the
> correct adapter rings to mount my grating on.  Have this on order but of
> course won't get here in time for the Perseids.  Didn't set up my
> reflection grating spectrograph as I was having difficulies with it.  I was
> going to use an old Sentinel All-sky Camera interface box to try and
> capture spectra directly to a computer.  Of course Murphy's Law hit me and
> the computer failed.  Hope to get this working eventually.  Hope the video
> is not too noisy as that will trigger captures.
>     Anyway that's my report for now.
>
> Ed Majden
> B.C. Meteor Network
> Courtenay, B.C. Canada
>
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