I’m new to gathering my own data for astrometry and photometry analysis in Astrometrica.
I have a OSC camera on my main scope (a William Optics123FLT refractor) and so was wondering the best way to use it. Can I use it unbinned and if so do I de-bayer and then load into Astrometrica? And what filter setting should I use in Astrometrica? Or would I be better binning and just using the mono output?
This is a good question – to which I can’t offer you a good answer! You might want to submit your question to the comet discussion list and Nick James or another will likely pick it up quicker.
I would say that if your plate scale is around 1 arcsec / pixel or below then you might as well 2×2 bin and use the mono pics for astrometry. I’m not sure what you should do if you are correctly sampling or are undersampling.
I look forward to seeing your colour pics of Wirtanen! I’ve just bought a Hyperstar (Christmas brought forward) to give me a wide field of view for the close approach.
Good to hear you are imaging 64P – it’s nice isn’t it? And 38P is moving to a better position.
I would de-bayer and use the green layer in Astrometrica as pseudo-V, i.e. set Astrometrica to use V band or the Gaia G band. You can then do astrometry and photometry. Have a look at the comphot page if you want to have a go at photometry. Depending on your pixel scale you can do the de-bayering by linear interpolation or simply by binning the two green pixels in each set of four. The latter is probably more photometrically correct. I have done photometry and astrometry using an ASI294MC camera and get good results.
Let me know if you need more detail on this. I hope that you decide to submit images and data to the section.