› Forums › Photometry › Hyperstar for photometry? › I typically get 2.5″ – 3″
30 August 2018 at 7:23 am
#579927
![](https://britastro.org/wp-content/uploads/2017/05/picture-2556-1493793835-80x80.jpg)
Participant
I typically get 2.5″ – 3″ FWHM on my images using a 3.8um pixel size camera (ASI1600MM-C). I only use the middle quarter (area) of the camera due to field curvature.
James