"Roger Smith" schreef in bericht
...

"Sytze Stel" wrote in message
ll.nl...


I read the first posting and found nothing wrong. I remember that
Mars' diameter is given as 25 arcseconds. If one looks through a 75 X
telescope the angle becomes 1875 arcseconds or 31 minutes, the
diameter of the moon as we see it with the naked eye.

Am I mad or am I?

Sytze, (80 since a couple of months ago)

Sytze

Gavin was quoting figures that may have been true in 2003, but they
are certainly not this year. The apparent diameter of Mars is no
greater than 14 arcseconds this August.

Best wishes, Roger


Thank you Roger.

Indeed, in the "Sterrengids" -Starguide- 2003 the apparent diameter of
Mars is given as 25.11" at august 28, in 2005 it is much less.
I shouldhave consulted the books first.
What remains is a half moon, so to say ;-)

Regards,
Sytze