Camera Labs

Hi,
A couple of days ago someone who works for my dad gave me a Helios 600mm scope that had been in his attic for a year. The reason for this post is i have no clue on how to mount my camera (Nikon D90) onto tje telescope. I know i need a t-mount adapter but apart from that thats it, could anyone point me in the right direction?

thanks,
Will.

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Nikon D90

I assume it has a removable 1.25 inch eyepiece? If so you just need a t-ring (fits onto camera), then a t-mount eyepiece adapter. Put it together and that goes in place of the optical eyepiece. Alternatively you can look at eyepiece projection but there doesn't seem to be much for DSLRs that way, more for compacts.

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.