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Old 28-03-2020, 10:49 AM
glend (Glen)
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glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 6,151
Tareq, honestly there is nothing wrong with an 8" f5 Newt for imaging. Learn the craft on that before you go adding to the collection. For DSOs you will need a good coma corrector, like a Baader MPCC mk3, and I assume you have an adequate mount. For planetary you will need to look at a Parracor etc to get you the necessary focal length multiplier.
If your heart is set on a good triplet APO, don't compromise with cheaper colour handiacaped Doublet refractors, ED or not all Doublet are compromised.Your Newt has no colour issues, keep that in mind.
Good luck.
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