I’m looking for a refractor recommendation for astrophotography (not visual). Here’s a bit of my history, as well as what I’m thinking; I’d love to hear some of y’alls input.
I currently own a Celestron 9.25” SCT scope that I run with a .63x reducer, giving me a focal length of 1480mm. It lives on a EQ6-R Pro. I’ve mated it up with a ZWO ASI1600mm pro, and can also throw a Canon 5D mk IV on it too. It is great for galaxies and planetary stuff, but working with larger objects would require some crazy mosaic skills with a massive time investment, so that’s out.
What I’m wanting is a wider field to be able to capture some of the larger targets out there; North American, Andromeda, California, Heart, Soul, The Veil, etc. So after using Stellarium and putting some of the wider field scopes into the equipment profiles, as well as my cameras, I’ve narrowed it down to wanting around a 350-400mm view when paired between the 1600 & 5D.
Here’s what I’m looking at so so far:
WO GT71 triplet f/5.9 - 420mm (reduced to 336)
WO Zenithstar 73 doublet f/5.9 - 430mm
WO Zenithstar 61 doublet f/5.9 - 360mm
Meade 70 series 6000 quad f/5.0 - 350mm
They all fit into my rough budget (including accessories), but I’m still not certain between them, or even if I’ve totally overlooked another gem out there. What would YOU buy in the $1,100 range, and why?