Showing posts with label dwarf Nova. Show all posts
Showing posts with label dwarf Nova. Show all posts

Wednesday, September 16, 2009

VX For Dwarf Nova Outburst .....update#2

The variable Star community is alive with excitement after Rod Stubbing an amateur astromomer from Victoria Australia discovered VX For in outburst for the first time since 1990.

After a 19 year spell the Dwarf Nova has moved into outburst. Importantly Rod appears to have caught it before its previous peak of 12.5 in 1990.



I was able to get some photometery on VX For and reported confirming data on Rod's exciting find to the AAVSO.

Mike Simonsen has written an excellent blog on this star with some of the history and the significance of the event. I imagine professional astronomers will be keen to get some spectroscopy on this interesting star in over the next month.



My observations were just a short run last night as the window is fairly tight from about 11:30Pm local time through to about 4:30am. The co-ordinates also restrict viewing to southern observers: RA 03:26:46.9 Dec -34:26:37.0 so our northern friends will have to leverage any access they can get to southern hemiphere scope......its called teamwork! Also Joe at the Center for Backyard Astrophysics is following the story with interest and rallying the troops!

Anyway it promises to be an exciting time as VX For entertains us for the coming weeks. My first light curve showed it right on the 13.0 magnitude observed the previous night by Rod Stubbing. Amateur Observers can post their results to the AAVSO.



Enjoy! I will post any further updates, you can also follow the light curve here as it develops.

Vx For Dwarf Nova outburst

Great work last night Rod. I jumped on it as soon as it came over the side of the shed and have it in the first image at an average of 12.951 M across the first three images I have downloaded (airmass of 1.5)

I should be able to tighten that up a bit when I process the rest of the run.

Data from my first image....

VX For 12.951 SNR 103

126 12.555 SNR 137
137 13.652 SNR 59

More later....

Firrst three images down:

#TYPE=EXTENDED
#OBSCODE=LPB
#SOFTWARE=Photometrica 3.0
#DELIM=,
#DATE=JD
#NAME,DATE,MAG,MERR,FILT,TRANS,MTYPE,CNAME,CMAG,KNAME,KMAG,AMASS,GROUP,CHART,NOTES
VX For,2455090.09733,12.936,0.011,V,NO,ABS,ENSEMBLE,na,137,13.660,1.55703,na,090915,na
VX For,2455090.09994,12.959,0.010,V,NO,ABS,ENSEMBLE,na,137,13.665,1.53358,na,090915,na
VX For,2455090.10256,12.991,0.011,V,NO,ABS,ENSEMBLE,na,137,13.662,1.51102,na,090915,na

Looks like Rod has bagged a beauty!!!!


Peter

Search

Custom Search
close