The Retina Nebula, IC 4406

[Pilgrim]

Image taken over 5 nights with a TAL250K 10" scope on EQ6R mount in Brisbane city (Bortle-7). ASI290MM camera with LRGB filters set.

Lucky imaging with 1.6" filtering condition.

LRGB 41 x 5 min (~10 frames per channel)
Each 5 min frame is a sum of 60 lucky subframes by 5 sec each.

Total: 3h25m filtered exposure time (2460 x 5 sec frames), from total observational time about 17 hours during 5 nights 21, 22, 24, 25, and 26 August 2021

full at astrobin : https://www.astrobin.com/full/k69fzy/0/

[multiweb]

:eyepop: That's very neat. You don't see that one often and in that much details. Subzero cool. :thumbsup::thumbsup::thumbsup:

PS: Pretty exotic telescope too.

[PKay]

Great result Igor

Such a small and feint target, certainly in the 'too hard basket' for most.

And as Marc said, not many have attempted it especially from the city.

Very well done and 10/10 for effort :thumbsup:

[Pilgrim]

Thanks Marc and Peter for your kind words!

The weather was interesting these days, on average the atmosphere is not fancy but with the help of lucky-imaging there are quite a lot of really calm moments to catch.

[Pilgrim]

Yeah, I love this tube. Extremely compact for its aperture and strong. It arrived in my luggage on four flights during 36 hours. The suitcase was destroyed , the tube received a couple of scratches from strong blows, but even the factory collimation of 14 years ago was not affected. (Yes, I never collimated this tube and it still perfect). I think it could even survive the plane crash, not loosing it's collimation :D

[Placidus]

That's a very clever technique.

To get it at all is good. It's magnitude 10.9, versus say the Dumbell at mag 7.6. I suspect other readers haven't quite tweaked as to how special this image is.