[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: FN Vir?
For DS23 I took everything in my log where the *center* of the image was
between 6 and 8 hr. This was based on the log book entry which was made
from looking at an image and writing down what DS9 thought was the
center. This can be another degree off. So DS23 could extend 3 degrees
either side of the above band. Someone can plot it and put up exactly what
For the whole engineering data set, I have about 85% of the full band at +7
At 09:07 AM 6/22/02 -0700, you wrote:
> >Star 94283 on the TASS CD 23 might be FN Vir, not sure.
>Since the Simbad coordinates are:
>13 00 36 +05 41.0 J2000
>it would be in Tom's stripe, but I thought CD23 only covered 6h-8h RA.
>Shows what I know. Here are the J2000 coordinates, in case someone
>wants to calculate proper motion themselves. The UCAC2 position
>should be close enough for tass:
> 13 00 36.632 +05 40 56.57 epoch 1950.4 USNO-B
> 13 00 33.495 +05 41 8.15 epoch 2000.368 UCAC2
>This star is bright enough to be in most of the proper motion catalogs:
> Lowell (Giclas) G060-055 1.04 arcsec @288 deg
> LHS (Luyten) 2264 0.973 arcsec @284.4 deg
>It was on our photographic parallax program (8.4pc if I recall right),
>but has not been observed in the CCD era.
> Note that high proper motion objects are missed by most of
>the surveys if their proper motion exceeds a certain amount (you can't
>easily match across decades of plate epoch). One arcsec/yr is getting
>close to that limit. Even for my 20yr timespan of taking CCD data,
>I find that many stars are moving outside of my normal matching radius
>and so I am going to have to rework my analysis pipeline one of these