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Old 14-07-2018, 06:45 PM
Malcolm
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Malcolm is offline
 
Join Date: May 2015
Location: Lismore NSW Australia
Posts: 242
afaik you only need a Canon t-ring plus a 2" adapter. There's a chart around on the net somewhere that shows the limit of exposures you can make for your latitude before field rotation sets in. From memory about 25 secs max and it's decided on the altitude above the horizon of the target. But you could take multiple shots and stack them. You could possibly use a 2"' GSO barlow but I can't say if you'd achieve focus with it. I use a cmos and or a ccd camera opn my GOTO with average results. A Canon on a SkyWatcher can achieve focus with just the t-ring and adapter, at least it does on mine. The link you posted is for a Sony, not a Canon. https://www.opticscentral.com.au/sax...canon-eos.html Apparently you need a T Adapter as well but I don't see it there.
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