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Tareq
Thanks for your kind comment about my images
Bigger Aperture is not always better
We are all limited by changing atmospheric conditions every time we go out
My 6” f6 has sometimes produced better quality lunar images over time than the 8” f5
With planetary imaging a lot of things affect your outcome like image scale, focal ratio, atmospheric conditions and so on ..... that’s why they coined the phrase “Lucky Imaging”
My 8” f5 is a big an aperture as I will ever need , it can resolve most objects down to magnitude 10 on a good night.
A bigger scope would require an observatory as the scope then becomes a wind sock
I’ve never tried to collimate an f4 newt but many IIS members have said on many occasions stick to with an f5 as f4 can be troublesome
I enjoy visual astronomy so I only observe with my 12” Goto dob , it’s on an Az Alt drive turntable base.Its not designed for imaging and I never bought it for than purpose
Hope you gather enough information to make a decision on what scope you by. Remember that you can’t go wrong with a 6” or 8” newt ,they just simply work and work well , they are best all round scopes on the planet for the price
Good luck !!
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