If i add a 0.7x reducer do i need to recapture my calibration frames

[iwols]

Hi just wondering if i need to recapture my darks ,flats and bias after adding a 0.7x reducer to my imaging train?,thanks

[Elp]

Flats definitely

[iwols]

thanks

[Fegato]

Yes that's right - darks and bias for the camera, flats for any change in the image train.

[Adam J]

1 hour ago, Fegato said:

Yes that's right - darks and bias for the camera, flats for any change in the image train.

Dark flats too as it will likely change your exposure time. 

[Fegato]

13 hours ago, Adam J said:

Dark flats too as it will likely change your exposure time. 

Well, dark flats instead of bias if you really need them yes.  Depends on your camera and your flat exposure time. I have to take them always with my ASI294MC Pro, but never with the ASI2400MC Pro.