[vsnet-alert 8836] Re: [FWD] Fading: ASO-H45 observations: Dwarf Nova in Hydra ASAS1025-15

Berto Monard LAGMonar at csir.co.za
Thu Feb 2 16:30:25 JST 2006


The decline/fading mentioned by Clay is not an actual fading of the DN but represents the fading part after the s/hump. 
If observations were done an hour earlier they would have shown a 'brightening'...

My own observations last night showed that ASAS 102522-1542 is still humping and at the same average brightness as it was a couple of nights ago. Too strong wind and threatening weather limited the observations to only one cycle and a bit.

Berto Monard / CBA Pretoria

>>> Hitoshi YAMAOKA <yamaoka at rc.kyushu-u.ac.jp> 31/01/2006 18:11 >>>
From: "P. Clay Sherrod" <drclay at tcworks.net>
Subject: Fading: ASO-H45 observations:  Dwarf Nova in Hydra ASAS1025-15
Date: Tue, 31 Jan 2006 09:06:11 -0600

ASO-H45 observations:  Dwarf Nova in Hydra ASAS1025-15
Showing a substantial decline during this sequence.

COD H45
CON [drclay at tcworks.net] 
OBS P.C. Sherrod
MEA P.C. Sherrod
ACK ASO Observations
AC2 drclay at tcworks.net 
TEL 0.41-m f/3.3 RC + CCD
COM Reduction done using Charon
COM Charon version Jan 08 2006 12:23:52
COM Report file created Tue Jan 31 01:15:56 2006
NET UCAC2

ASAS1025-15
Calibrated Sequence via ASVSO Comp. Star "123" (12.28, +/- 0.06), Chart 1020-15;
star within central field with ASAS1025-15
Each photometric measurement was calibrated against this star individually.

ASAS1025-15              C2006 01 31.35031 10 25 22.22 -15 42 21.5          13.0
R      H45
              C2006 01 31.35031      2453766.850307              12.99R      H45
              C2006 01 31.35254      2453766.852541              12.94R      H45
              C2006 01 31.35533      2453766.855330              12.91R      H45
              C2006 01 31.35636      2453766.856360              12.94R      H45
              C2006 01 31.35755      2453766.857552              12.99R      H45
              C2006 01 31.35883      2453766.858825              12.98R      H45
              C2006 01 31.36255      2453766.862552              12.95R      H45
              C2006 01 31.36415      2453766.864149              12.86R      H45
              C2006 01 31.36545      2453766.865446              12.91R      H45
              C2006 01 31.36659      2453766.866591              12.94R      H45
              C2006 01 31.37264      2453766.872645              12.99R      H45
              C2006 01 31.37321      2453766.873212              12.98R      H45
              C2006 01 31.37519      2453766.875191              12.99R      H45
              C2006 01 31.37895      2453766.878953              13.05R      H45
              C2006 01 31.38047      2453766.880469              13.02R      H45
              C2006 01 31.38158      2453766.881580              13.06R      H45
              C2006 01 31.38432      2453766.884323              13.04R      H45
              C2006 01 31.38533      2453766.885330              13.07R      H45
              C2006 01 31.38602      2453766.886024              13.07R      H45
              C2006 01 31.38701      2453766.887008              13.04R      H45
              C2006 01 31.38942      2453766.889416              13.12R      H45
              C2006 01 31.39579      2453766.895793              13.12R      H45
              C2006 01 31.39925      2453766.899253              13.10R      H45
              C2006 01 31.40016      2453766.900156              13.13R      H45
              C2006 01 31.40264      2453766.902645              13.13R      H45
              C2006 01 31.40373      2453766.903733              13.19R      H45
              C2006 01 31.40468      2453766.904682              13.14R      H45
              C2006 01 31.40614      2453766.906140              13.19R      H45
              C2006 01 31.40723      2453766.907228              13.20R      H45
              C2006 01 31.40859      2453766.908594              13.19R      H45
              C2006 01 31.40974      2453766.909740              13.20R      H45
              C2006 01 31.41302      2453766.913015              13.17R      H45


Clay
--------------------
Dr. P. Clay Sherrod
Arkansas Sky Observatories
Harvard MPC H41 (Petit Jean Mountain)
Harvard MPC H45 (Petit Jean Mountain South)
Harvard MPC H43 (Conway)
Harvard MPC H44 (Cascade Mountain)
http://www.arksky.org/ 

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