DSS - whats's going on here then?

[laser_jock99]

I tried combining just ONE sub and a flat in DSS and it has somehow managed to screw up the colour alignment at one edge only. Ideas please?

[Uranium235]

Bit of a daft question.. but why would you want to run just one sub through DSS?

If its for calibration purposes, you can just tick the "save calibrated/debayered" box in the stacking settings. All you need to do then is to register the image (no need for align or stack), DSS will then spit out the calibrated file in your image directory with the name <filename>.cal.fit.

You can change the output type to .tif is you want something a bit more photoshop friendly.

[laser_jock99]

Bit of a daft question.. but why would you want to run just one sub through DSS?

Good question. I was getting this effect when stacking 5 subs, so I tried just 'stacking' a sub and a flat and it still happened. So how can one sub become half misaligned when in theory there is no alignment involved?

[russellhq]

Another daft question, but is the sub OK before you run it though DSS?

[laser_jock99]

Another daft question, but is the sub OK before you run it though DSS?

Not perfect- but better than the DSS stack.

[Uranium235]

Hmmmm... interesting. So it happens with more than one sub too?

Have you tried registering them using registar? It wont calibrate them for you, but it makes a good job of aligning subs that dont want to behave.

Just a theory, but perhaps the fact the field isnt flat is confusing the stacking software as to which stars to choose, and therefore leading to misalignment when registering.