Affiliation
American Association of Variable Star Observers (AAVSO)
Thu, 11/08/2012 - 13:51
I'm traveling to Mt. John in about a week to continue debugging the 24-inch telescope. If anyone has specific targets in the southern hemisphere for which they want images, let me know. I'll be happy to do single-night snapshots or perhaps a time series, depending on how the telescope performs. BVgri available; 13x13arcmin FOV; 6<V<20mag.
Arne
How about these
To: Arne,
How about these gems:
BT Tel 18:11:35.27 -55:35:11.2 (RR type, range 14.7-15.9)
IZ Tel 20:28:44 -56:20:43 (EA type, range 12.06-14.06)
RS Gru 21:43:04.22 -48:11:22.2 (HADS type, range 7.94-8.48)
TT Hor 03:27:04.4 -45:52:56.6 (EA type, range 9.8-10.5)
B&V filtered shots would be great with RS Gru & TT Hor needing short exposures (5-15 seconds) To get SNR of >30k adu and IZ Tel & BT Tel needing longer exposures (30-90 seconds) to get SNR of >20k adu on the stars, especially if they are in the quiescent portion of their range. If you we're to get 25 B&Vs. on the last two (short exposure) and 12 B&Vs on the first two (long exposure) that would be great.
I can do an ensemble reduction if there are at least 4 comp starts in the fields shot. I would use you code as the observer.....
Sincerely yours,
James Foster
Los Angeles, CA
obs code: FJQ
p.s. The OC61 sounds familiar to the scope I used at JPL's Table Mountain Facility. It was a 24-inch f/10 with a 1k x 1k LN2 cooled ccd. Glad to hear you have similar sized equipment down south! Be safe.
How about PNV J05202109-7305433 (OGLE-2012-NOVA-003)? Appears to be in fairly rapid decline - under-observed only 4 OGLE IV observations in I-band (25 Oct - 04 Nov) and one R-filtered CCD obs (05 Nov). BVRI would be handy. Not in AAVSO database yet. I tried an RGB image on 08 Nov but only got a faint trace, maybe mid mag 15s unfiltered.
Cheers -
Rob Kaufman, KBJ
Here is one
To: Arne
Here is one more.....
BB Dor 05:29:28.64 -58:54:46.6 (Type: NL/VY-U Gem type?, Range 14.3-19.3 V-mag)
This is a cataclysmic variable with a 3.93 hrs period. It was mentioned in the recent Cornell article on Kepler's observations of V447 Lyr. This will probably be the best star to benefit with a large apeture scope with a long (4.5hr) time series and short (60-sec) exposures with V filter.
James