cotterless45 Posted August 3, 2015 Share Posted August 3, 2015 Going to have another shot at this, assuming that it's widening,http://webbdeepsky.com/double-stars/Nick. Link to comment Share on other sites More sharing options...
Tzitzis Posted August 3, 2015 Share Posted August 3, 2015 Good luck then Link to comment Share on other sites More sharing options...
jkwhinfrey Posted August 3, 2015 Share Posted August 3, 2015 Ambitious, let us know how you get on... good or bad James Link to comment Share on other sites More sharing options...
chiltonstar Posted August 3, 2015 Share Posted August 3, 2015 Good luck Nick - should be possible as I can manage it occasionally with 127mm.Chris Link to comment Share on other sites More sharing options...
laudropb Posted August 3, 2015 Share Posted August 3, 2015 Good luck. I have never managed a clean separation with this, but if it is separating I will give it another go, if and when I get a clear sky. Link to comment Share on other sites More sharing options...
chiltonstar Posted August 3, 2015 Share Posted August 3, 2015 I've tried simulating this pair using Excel (for 127mm aperture), and with excellent seeing, the peak-to-trough ratio is about 15% - a bit easier than the Dawes limit.Chris Link to comment Share on other sites More sharing options...
John Posted August 3, 2015 Share Posted August 3, 2015 Good luck with Lambda Cygni Nick.I've had fairly frequent goes at it with my ED120 since it's been well placed but so far the "snowman look" is the best I've done with it. I'm waiting for an exceptional seeing night I think .... Link to comment Share on other sites More sharing options...
chiltonstar Posted August 13, 2015 Share Posted August 13, 2015 With excellent seeing through the haze here last night, I had a go (sorry about the quality - I have the artistic skills of a carrot) at sketching Lambda Cyg, while I was waiting for the main event of the evening to appear. Seeing was excellent, with sharp, stable diffraction rings, even at x300, which I can achieve with my Mak on only a few nights per year.Chris Link to comment Share on other sites More sharing options...
jkwhinfrey Posted August 13, 2015 Share Posted August 13, 2015 Well done. That's a tough one... and I should add that you've given me a new respect for carrots James Link to comment Share on other sites More sharing options...
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