[Prev][Next][Index][Thread]
Re: (meteorobs) Video Camera Data
Definitely the best buy. Numerous Ocultation people use
them to time ocultations. Unfortunately I bought my equivalent
Panasonic WV- BP314 before these cheaper ones were known
of. You can also go mobile without the need for an inverter that
can frequently drown out the WWV ground wave on my setup.
----- Original Message -----
From: Rob McNaught <rmn@aaocbn.aaodot gov.au>
To: <meteorobs@jovian.com>
Sent: Monday, July 19, 1999 5:00 PM
Subject: Re: (meteorobs) Video Camera Data
> Dave,
> This is the same sort of security camera I mentioned with the same
> results. Depending on your intended purpose, it can be quite adequate. I
> use it on a all-sky mirror to TIME fireballs. It has very limited
> application for other meteor work without use in conjunction with an
> intensifier.
>
> Robert H. McNaught
> rmn@aaocbn.aaodot gov.au
>
> On Mon, 19 Jul 1999, Dave English wrote:
>
> > I figured that a little more information is due so you can
> > estimate the bennifits and limitations of the camera Brian Hunter
> > wrote about for SeeSat. Here is the heart of his message;
> >
> > "As some of you know, my standard observing tool is an 80 mm.
> > f/5 refractor on a simple alt/az mount. I purchased a ccd-based low
> > light level televison camera and have it mounted on the end of the
> > elevation axis opposite the telescope. It is mounted on a 135 mm focal
> > length camera lens (48 mm aperature) and connected to a VCR. The two
> > 'telescopes' are pointed in the same direction so the VCR carries a
> > complete record of what I am looking at. The camera has a built in
> > microphone that picks up the clock ticks generated by the computer and
> > also any comments I make as I observe.
> >
> > The camera is a P23C from Supercircuits Inc. in Leander Texas
> > (www.supercircuits.com), it sells for US$80 plus shipping.
> >
> > The remarkable thing about this camera is that it is rated a
> > 0.04 LUX (not a typo), and with a 48 mm aperture, I can see stars down
> > to 8th magnitude and satellites down to 7th magnitude and occasionally
> > fainter. The downside is that the ccd chip is only about 10 mm across
> > the diangonal and the field of view, even with the 135 mm focal
> > length, is only about 3 degrees. I'm playing with other optics to try
> > to find a combination that gives me a larger field of view and better
> > sensitivity.
> >
> > There are a couple of other minor problems. The resolution is
> > not great especially on bright objects, there appears to be blooming
> > from pixel to pixel and I don't ever get pinpoint or single pixel
> > images. The chip is not cooled and at high gain, the random background
> > noise is quite obvious." Brian Hunter<bkh<@chem.QueensUdot ca>
> >
> > I hope that Bob and Ed and others who are interested in using
> > video to record their observing sessions can work out if this camera
> > is worth looking into.
> > Dave English
> >
> >
> > To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
> > http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
> >
>
> To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
> http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
>
To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
References: