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yet another eta
Hello Folks,
With advice from this forum I captured the Eta Carinae nebula last night.
A stack of four 6.5 minute ISO 800 pictures with Canon 60DA at prime focus of my Mewlon 210,off axis guiding with Orion thin off axis guider and PHD2.
A hot day and even with 3 hours to cool to ambient the focus was hard to keep as the evening cooled and the scope shrank. Refocusing the Mewlon is a pain with image shift. This means that PHD has to be stopped and restarted after focusing. I still did not get it right, more practice required.
Would people tell me what else is wrong, apart from coma from the uncorrected Mewlon.
Such criticism would be welcome.
Cheers
Chris
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