I have a celestron 11 inch SCT. Here is an image Polaris. I should be able to see its companion star but its not showing. What is wrong? Thanks. Jim.
What is wrong with this star?
Posted 13 July 2018 - 07:30 AM
Jim, IMO you need almost perfect seeing conditions and an Instrument (and eyepiece) that controls scatter extremely well.
Although I love my SCT's, I would use a a mid sized Apo for this task..
Posted 14 July 2018 - 06:39 AM
you can easily see Polaris's companion with an eyepiece if seeing is not too bad which is magnifying many times but I would guess at prime focus the image scale is small and I would guess the brightness of the star overshadows it