[vsnet-chat 1490] Re: Bistar Survey on Sept. 12

[Seiichi Yoshida <seiichi@muraoka.info.waseda.ac.jp>]

Dear Brian,

Re: [vsnet-chat 1434] Re: Bistar Survey on Sept. 12

>      This is very interesting and valuable survey work.  As a next step,
> you may wish to try getting photometric calibrations of your images.
> For your two shorter focal-length lenses (24mm and 35mm) it will be
> convenient to use corrected V and B-V from the Tycho catalogue, since
> the magnitude limits are well matched.  For the two telephoto lenses,
> the Tycho photometry can be supplemented with fainters stars from my
> long list of photometric reference stars.  The 180mm lens will always
> have some of these fainter stars, and 300mm lens will have them often.
> Since you are first making a star-list with coordiantes for all stars,
> use of a list such as this can be made nearly automatic, much as you are
> already doing with matching the star-filed with the GSC.

Thank you for your comment and I am sorry to be late to reply you.

Yes, photometric calibrations is one of the tasks in my future work
list. I will show you the experimental result about this point in the
near future.

Best regards,

--
Seiichi Yoshida
Muraoka Lab., Waseda University, Japan
seiichi@muraoka.info.waseda.ac.jp
http://vsnet.info.waseda.ac.jp/muraoka/members/seiichi/index.html

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp