Bias frames with 2x2 bin?

[PhotoGav]

Do I need to shoot a new set of bias frames at 2x2 bin to use with subs shot at 2x2 bin? Or can I use the set I have shot at 1x1 bin with the 2x2 subs?

Thanks.

[swag72]

As far as I understand it, and certainly what I do is shoot one set of bias at 1x1 and another set at 2x2.

[PhotoGav]

Perfect, thank you Sara. The calibration frame marathon continues!!!

[ollypenrice]

Certainly you need new bias and darks.

Flats would be an interesting one, though. The professionals regard flats as containing pixel by pixel information though amateur imagers don't. (Well, I don't, at least!) So will a downsized Bin 1 flat work with a bin 2 image? I suspect that it would but I really don't know.

Olly

[PhotoGav]

Thank you Olly. I've gone for a complete set of 2x2 calibration frames. Though I am employing the 'Penrice Approved Flats For Lazy Imagers' technique for my current LRGB project and will use the L flats for all four sets of subs!

[ollypenrice]

Thank you Olly. I've gone for a complete set of 2x2 calibration frames. Though I am employing the 'Penrice Approved Flats For Lazy Imagers' technique for my current LRGB project and will use the L flats for all four sets of subs!

Scandalous! It's like only ironing your collars and cuffs then wearing a jumper over your shirt. Seriously, see if it works, as it does for many. If it doesn't you'll have to start ironing...

Olly

[lensman57]

Do I need to shoot a new set of bias frames at 2x2 bin to use with subs shot at 2x2 bin? Or can I use the set I have shot at 1x1 bin with the 2x2 subs?

Thanks.

Yes, for sure. Once binned the subs are of a different size so you'd need the Bias, Darks and Flats at the same size, well that is what I'd do.

A.G