[vsnet-chat 5468] Re:[vsnet-campaign-v838mon 376] V838 Mon photometry/imaging techniques

[Seiichiro Kiyota <skiyota@nias.affrc.go.jp>]

Thank you for your helpfull suggestion.

In message "[vsnet-campaign-v838mon 376] V838 Mon photometry/imaging techniques",
aah@nofs.navy.mil wrote...
 >     - use V or Rc filters

OK. I will try Rc filter after my AP-7 CCD camera will be repaired. 
(Now I have problem in shutter of my AP-7.)

#But my old Rc filter may change color during storage and difficult to transform.
#And Rc=14.7 is near limiting magnitude of my telescope. I will try to take long exposure or to stack images.

 >     - use a small measuring aperture
 >     - set the sky annulus outside the light-echo shell

Also I will try this.
But FOV is about 4 arc second/pixel in combination of AP-7 and my telescope.                                       
Thus I do not know that small aperture size works well or not.
 
                                                    Seiichiro Kiyota


----
 Seiichiro Kiyota  skiyota@nias.affrc.go.jp
 Laboratory of Stress Physiology
 National Insititute of Agrobiological Science
 Tel:81-298-38-8384
 Fax:81-298-38-8347

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