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What is wrong with this star?

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#1 James Cunningham

James Cunningham

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Posted 12 July 2018 - 10:59 PM

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. 

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#2 junomike

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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..



#3 ishorx

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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




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