Maclean156 Posted November 2, 2021 Share Posted November 2, 2021 Hi. I've a celestron edge hd 8. I will be connecting my nikon d5100 dlsr via the diagonal with an adapter. Obviously the image is going to be tiny so I think a barlow is what is needed. My question is what size barlow and what make of barlow should I get? Many thanks in advance Steven Link to comment Share on other sites More sharing options...
callisto Posted November 2, 2021 Share Posted November 2, 2021 17 minutes ago, Maclean156 said: Hi. I've a celestron edge hd 8. I will be connecting my nikon d5100 dlsr via the diagonal with an adapter. Obviously the image is going to be tiny so I think a barlow is what is needed. My question is what size barlow and what make of barlow should I get? Many thanks in advance Steven Here is a helpful tool https://astronomy.tools/calculators/field_of_view/ Mark Link to comment Share on other sites More sharing options...
Maclean156 Posted November 2, 2021 Author Share Posted November 2, 2021 Thanks but what barlow make is good? Link to comment Share on other sites More sharing options...
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