Return to Home Page
From tdroege2@earthlink.net Wed Jun 4 01:19:28 2003 Date: Tue, 03 Jun 2003 11:19:14 -0500 To: "James Bedient" <bedient@hawaii.rr.com>, "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp>, <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp>, <vsnet-flare@ooruri.kusastro.kyoto-u.ac.jp> From: Tom Droege <tdroege2@earthlink.net> Subject: Re: [AAVSO-DIS] Re: flares in Mira stars Cc: <AAVSO-DISCUSSION@informer2.cis.McMaster.CA> TASS is presently covering all the sky that crosses the meridian once a night in beautiful light polluted cloudy Chicago. The data you are referring to was the engineering run data where we were following a field as long as the drive would allow. This mostly to test how we could do it. Not very well. The all sky once a night coverage is being done by 3 dual telescope Mark IVs. I am building some Mark Vs. The present plan is to build 2 of them and try to cover the whole sky with 3-4 hour observations in B,V,R and I. This will take a couple of years here in Batavia. If you start out from scratch and decide to build say 200 telescopes at once, then you do it a lot differently than if you try to build a single telescope. Everything gets cheaper. Parts are cheaper, imagers are cheaper, the engineering costs are spread over many devices. You can even think in terms of one large mount holding many telescopes. The Mark V's hold 4. Think in terms of a mount with 400 small telescopes! I have built 14 telescopes solo. With a program of the size that would build and operate a 3 meter telescope, you could build several hundred small telescopes and cover the sky. I think that you would get more science out of such a program than one gets out of the typical "small" 3 meter program. But I just love that no one has tried to do this. This lets me have a field to myself (almost) as an amateur. Every so often I even think I have found something. Who knows, the simultaneous exposure is pretty unique and makes it hard to say that some flash did not happen. We see a lot of such events. So far they are satellites or asteroids passing by. But there are some that are marginal that ... Tom Droege Tom Droege At 06:31 PM 6/2/03 -1000, James Bedient wrote: >ASAS-3 is fine work, but it still only samples (at best) once per day. How >will this definitively answer the question of flaring in Miras? If the flares >lasted days, they would already be known phenomena; if they last only a few >hours, sampling </=1x/day won't help -- much. TASS Mark 4-style observations, >observing a field many times a night, would do the trick, but TASS does not >return to the same field every night. > >You can observe lots of sky once a night, or you can observe a little of the >sky a lot. Can't do both without a whole lot more money than there is out >there for this type of project. And you can't answer the question of >short-lived phenomena in Miras without watching a whole bunch of them at fine >temporal resolution. That is a tough nut to crack. > >Jim B. > >----- Original Message ----- >From: "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp> >To: <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp>; ><vsnet-flare@ooruri.kusastro.kyoto-u.ac.jp> >Cc: <AAVSO-DISCUSSION@informer2.cis.McMaster.CA> >Sent: Thursday, May 29, 2003 9:36 PM >Subject: [AAVSO-DIS] Re: flares in Mira stars > > > > We can now study thousands of Mira stars with ASAS-3 public data. > > They are CCD-based, and we can directly see archival images (at least > > for the older data). Would someone try to make a better statistic for > > the claimed presence of short-lived phenomena in Mira stars? > > > > Regards, > > Taichi Kato > > > > _______________________________________________ > > aavso-discussion mailing list > > aavso-discussion@mailman.McMaster.CA > > http://mailman.McMaster.CA/mailman/listinfo/aavso-discussion > > > >_______________________________________________ >aavso-discussion mailing list >aavso-discussion@mailman.McMaster.CA >http://mailman.McMaster.CA/mailman/listinfo/aavso-discussion
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
