Lens or Telescope? a dilemma!!!
I am looking for a Nikon 300mm f2.8 lens (which goes for about 900 dollars) which I would like to use for widefield, perhaps narrowband AP due to its fast f.
Of course the dilemma is...a Takahashi 60CB goes for about the same amount. Its a bit slower and even with a reducer (which will cost of course raising the price tag) it can reach f4.2
Any opinions?
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