Atic monochrome Titan for photometry?

[astrogardener]

Hi all,

I want to buy a ccd for variable star photometry. I know that some of the 'entry level'/ autoguider ccd's are being used and good science is being achieved, however I can't find any observations from anyone using a monochrome Titan.

This ccd ticks all the right boxes for photometry as far as I can see, apart from having anti-blooming, although I believe with careful exposures this shouldn't be a problem.

I'm looking at the Titan because I only do variables, and not any other imaging.

Any thoughts?

Thanks guys.

Doug.

[andrew s]

Doug - I think it should be fine. You need to establish it's linearity to ensure you are in the linear response region when you make you measurements. It's QE is not particularly high (see here http://www.astrosurf.com/buil/isis/noise/result.htm for some measurements on one example. This manual is worth a read http://www.aavso.org/ccd-observing-manual.

Regards Andrew

[astrogardener]

Thanks Andrew,

Yes, the linearity will be the critical factor. I just wish there was some data out there using this ccd. Most of my variables have no bright stars that fall inside the FOV, and the AAVSO have done a great job of finding suitable comps that are close to the variable.

Thanks for the links.

Doug.