[Prev][Next][Index][Thread]

Re: (meteorobs) Video LM and Rates (was The Leonid Meteor Outburst of 1997)

George,

> When using a video system, is there any problem with magnitude 
> determinations? Does your system do it automatically or do you have to 
> guestimate in some way as you look at the tape later?

MetRec computes the meteor brightness. It uses the brightness of a
number of reference stars for calibration. However, single video frames
are relatively noise, and image intensifiers are very sensitive in the red
and IR part of the spectrum. This is why I think that the absolute
accuracy is only in the order of 1 mag. This become even worse if the
meteor is very bright or very faint.

Sirko

--
************************************************************************** 
*  Dipl.-Inform. Sirko Molau                  *                          *
*  RWTH Aachen, Lehrstuhl fuer Informatik VI  *              __          *
*  Ahornstr. 55, D-52056 Aachen, Germany      *       " 2B v 2B "        *
*                                             *                          * 
*  phone: +49-241-8021615                     *             Shakespeare  *
*  fax  : +49-241-8888219                     *                          *
*  email: molau@informatik.rwth-aachendot de     *                          *
**************************************************************************
*  www  : http://www.informatik.rwth-aachendot de/I6/Colleagues/molau       *
**************************************************************************

To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
References: