Are eye-fi (wireless) SD-memory cards acceptable?

[Daveskywill (David)]

Hello:

I just wondered about the possibility of shooting astrophotos using a good Canon Rebel T2i with wireless card (eye-fi) and wirelessly loading it

onto the hard-drive of a laptop in the observatory or out in the field?

It is advisable? Does someone here know about the range of use (like even how far) too it will communicate before the signal breaks?

PS: does anyone know, if I used one of those power supplies for my T2i, like to power it from a car battery, how to make your T2i stay on without doing the auto power off?

David

[Daveskywill (David)]

Does someone know if this will work: http://www.cercisastro.com/DC%20Adapter.html ? for DC to DC converting power supply for T2i

And will a CLS Astronomik light pollution filter work well for deep sky or is a Lumicon deep sky (SCT thread) filter better?

And should a person use multiple (light pollution) filters?
PS: it's good to be scientific and take notes. Of course that way we can compare and diagnose problems better.