Barnard's Loop with old, russian Helios lens

[Tomasz]

Hi!

This time I have tried old 58mm Helios lens made in CCCP attached to QHY163C ColdMOS camera. And... the lens is terrible Only centre of the frame is OK with rounded stars. On edges or even more (1/3 of frame) there are trail not stars!
I spent two nights to take a whole Barnard's loop picture - one for Ha and second for RGB.
Camera is great and it has very nice sensitivity in Ha.

This is final image my favourite DSO:

24x300s Ha 7nm

30x180s RGB

 

And only Ha:

Tomek

[Horwig]

A superb image of my favourite area of sky as well

 

Huw

[happy-kat]

Lovely definition.

Did you stop the lens down at all?

[Chris]

Really nice! 

[Tomasz]

1 hour ago, happy-kat said:

Lovely definition.

Did you stop the lens down at all?

:-) Thank You,

Yes it was stopped to F3,5

[bobro]

Could you post the RGB only image? Thanks.