Quote:
Originally Posted by RickS
Andy,
There's nothing wrong with sampling at 3 arcsec/pixel or more. Plenty of great widefields have been captured with a FSQ-106 and KAI-11000 or KAF-16803 sensor at 3.5 arcsec/pixel.
If it were me I'd be looking for more sensor real estate and bigger pixels but I'm not sure if the FLT110 has the image circle for a big chip?
Cheers,
Rick.
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Hmm - well that's an idea I hadn't considered Rick, a new camera?
The FLT 110 came with an adapter for an STL 10000 so maybe it has the image circle required, but the budget probably won't stretch that far unfortunately, then there's 2" filters etc.
Quote:
Originally Posted by glend
Does it have to be a refractor? The Skywatcher MN190 (1000mm fl, f5.3) is within your budget and a darn good astrograph with true colour rendition, no detectable coma, and no diffraction spikes. If you don't mind diffraction spikes there are many newt (& coma corrector) combos that will eat up less than half your budget.
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Hi Glen, no I'd consider a newt - I looked at the TAK Epsilon E130D - a mate has one and it's fantastic, but it's almost $4k.
With a FL of 1000mm the MN190 is longer than my current setup (616mm) so it has an even narrower FOV. But hey, maybe there are other, shorter newts around that are cheaper than the Tak E130D but still make decent astrographs?