FreeLists / az-observing / [AZ-Observing] Re: Deep Impact: Comet Tempel from Flagstaff

[BillFerris@xxxxxxx]

It's tough for me to estimate a brightness change  as I couldn't see the 
nuclear region prior to impact. But at its brightest  (about 15 to 20 minutes 
after impact), the nuclear region appeared stellar and  similar in brightness 
to 
the faintest of the three stars just northeast of  Tempel. Those three stars 
were...
Tycho 5546:1273:1, 11.2 mag.
GSC  5546:1397, 11.6 mag.
GSC 5546:0882, 11.9 mag.
 
NOTES:
- ID's from MegaStar5
- Magnitudes from ASAS-3: 
_http://www.astrouw.edu.pl/~gp/asas/asas3_catalog.html_ 
(http://www.astrouw.edu.pl/~gp/asas/asas3_catalog.html) 
 
Thanks to Brian Skiff for pointing me to  ASAS-3


So, I'd ballpark--large stadium w/  corporate skyboxes--the core at the upper 
11th magnitude range. Who else made  comparisons between the core and those 
three stars and what were your results?  For about 5 minutes, they formed a 
fine parallelogram  asterism.

Regards,

Bill in  Flagstaff



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