V411 Tau ... Other rapid pulsators?
Posted 18 October 2013 - 11:25 PM
Anyone know of any other similar objects or a list of them with very fast periods and decent ranges?
I know the delta scutis are fast too but low amplitude. There's another star in Aquarius with an 88 minute cycle if I recall correctly, but it skims my treeline. V411 goes nearly straight over me so that will be a clear shot.
Posted 19 October 2013 - 01:15 AM
At mag 14-15 it would be tough visually (impossible from where I view for me). It does sound interesting though. The period is so short that it could be included in a very dark sky trip with modest apertures without taking up the whole night, lol. I was not aware of the ZZ Ceti class of variable. Thanks for the post.
Posted 19 October 2013 - 11:18 AM
I got sidetracked last nite and didn't get out there, but tonight I'm going to make sure I take a run at it.
ZZ Ceti class, huh. OK that gives me some info for more digging. I like the idea of the fast ones...instant gratification!
Posted 19 October 2013 - 02:27 PM
but i would also welcome suggestions on short period variables.
I use a C9.25 at f/6.3 with an Atik 314L and would like to target a star that would allow me to get a lightcurve (my first) within one night.
Posted 21 October 2013 - 01:09 PM
Maybe the moon is blowing out so many stars due to proximity I'm not getting everything I should. By eyeball, this makes some sense, but the camera should punch through a bit better and even on a 20 sec run I'm not seeing anything comparable to the charts.
I used the co-ords from AAVSO, and when I type them into Google Sky I get the same stars on the charts. It's particularly vexing because the 1 deg chart I made shows a wicked bright (for our purposes) 6-7 mag star near the edge, and I see no such bright one anywhere near via eyeball and a wide angle eyepiece.
I guess I'll upload a shot to the plate solver site and see where the heck I'm actually pointed, I'm a bit mystified. It's got to be something stupid, but it's sure confusing!
Done some more googling on this class of star and I'm not finding much else as good for instant satisfaction at a reasonable magnitude range. All the rest have a range of tenths or hundredths of a magnitude.
Posted 03 November 2013 - 02:16 AM
Posted 03 November 2013 - 08:10 AM
Posted 04 November 2013 - 01:20 PM
Posted 05 November 2013 - 05:35 AM
Posted 05 November 2013 - 06:07 AM
Posted 05 November 2013 - 03:39 PM
What colour would you like ??? Chat is cheap - at least I got a piccy or two
Boy that's an odd color on CY
Posted 08 November 2013 - 09:17 PM
Posted 08 November 2013 - 11:14 PM
Almost a magnitude from peak to peak, over a period less than a couple of hours. Great for 'instant gratification' or testing a new equipment configuration.
Altho it's circumpolar for us, at this time of year, very low in the north, so light curve quality will be poor because it's so low.
Posted 09 November 2013 - 06:49 PM
Bummer about CY, jg!
Posted 09 November 2013 - 10:13 PM
Posted 15 November 2013 - 08:04 AM
I compiled a list of very rapid variable stars from the GCVS website. The limiting parameters are those stars brighter than mag 15 that change by 0.1 mag or greater within a 4 hour period of time. These are posted as a favorite (#37) link in my observatory website.