Derotator and image issue

[Howardk]

I am shooting in altaz with no guiding and use a derotator to derotate my subs

I am capturing ‘raw frames from the camera’ whilst live stacking and my frames after stacking in saspro show huge rotation as if my derotator wasn’t working…which it is!

Is this because i am capturing raw frames from the camera whilst live stacking?

If so… would i see much better derotated frames if i wasn’t live stacking and captured my subs from the start capture menu button?

[Howardk]

Its ok

I reversed the motor direction on my derotator and now all is good

But I would like to know if there is any difference in saving subs ‘raw from camera’ while live stacking compared with using the ‘start capture’ command

[admin]

Hi,

the only difference is whether SharpCap will apply any selected pre-processing steps to the image before saving (things like dark, flat, etc)

* If saving RAW frames from deep sky live stacking then the pre-processing is *NOT* applied to the saved frames
* If capturing from 'Start Capture' or 'Quick Capture' or 'Snapshot' then the selected pre-processing is applied

cheers,

Robin

[Howardk]

Thanks Robin