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Re: Radiants, was Re: (meteorobs) A blank meteor reporting form
GeoZay<<
>rather amusing that IMO had 10 degrees assigned to the Orionids... when it
has
>an actual sharp radiant of 0.84 degrees, and 8 degrees for a supposedly
>diffuse radiant for the capricornids. I can see giving the capricornids a
>slightly wider girth due to zenithal attraction would be greater for it's
>slower meteors than the faster orionids. But apparently this wasn't a
>consideration?<<
Mark>> Can you point me to the source of the 0.84 degree diameter? How was
this
determined (visual, radar, etc)? I don't remember seeing this....
>>
The only source I have was from a private communication listing radiants of
various showers from Rainer Arlt that he got from Juergen Rendtels as the
results of the meteor Photographic program. Don't know if it's published
anywhere...but this is the reason why radiant diameters are no longer in the
Shower Calendar tables and not on the meteor summary report forms in the newer
imo handbook. The fact that they are still mentioned for the highlighted
showers I think was an oversight? I expect these to be gone by the next shower
calendar? The shower radiants I got from this communication I entered into my
meteor guidebook. I guess this would be the only source that I know of that
has them listed?
George Zay