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Comparison Star Chart for Nova Del 2013

SXN's picture
SXN
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Joined: 2010-03-12

If you want to plot your own chart for Nova Del 2013, you can go to the chart plotter at http://www.aavso.org/vsp and set the coordinates for RA= 20 23 30.73, Dec= 20 46 04.1 and name the chart Nova Del 2013. Set the field of view for 10 degrees (600 arc minutes) and the limiting magnitude for 7 or 8...

OR- you can just download the one attached to this post.

AttachmentSize
Nova Del 2013 Binocular chart.png65.41 KB
field photometry incoherence for 000-BLC-933
Thibault de France's picture
Thibault de France
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Joined: 2013-03-11

Hi ,


In the table 12522CK  for  000-BLC-933 the star n°80 have to AUID :000-BLC-955 and 000-BCL-387

with to different Bmag  : 8.320 and 9.513

witch one is the right ?


Thanks


Thibault

80 comp stars on Nova Del 2013 charts
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SXN
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Joined: 2010-03-12

Thibault,

Those data are for two different stars. The northernmost one at 20:21:01.08 [305.25449d] +21:31:03 [21.51750d] is Henden USNO data and should be very good. The one closer to the nova at 20:23:08.99 [305.78745d] +20:51:51.1 [20.86419d] is Tycho data and should be pretty good also. Pick one and be confident in your result.

Mike Simonsen

 

80 comp stars on Nova Del 2013 charts
Thibault de France's picture
Thibault de France
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Joined: 2013-03-11

I just understand that it is different stars ,
There is two number 80 in the chart , and i had seen just one .

Thank you

Thibault

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484