M27 - versus, versus versus

[Tim]

A little while ago I spent 8 hours on m27 with my 8" GSO/QHY8 combination, a couple of nights ago I spent just over two hours on the same target with a Skywatcher Mak-Newt 190 and SXV-H9 mono camera with Baader 7nm Ha and OIII filters.

With the size of the chips and the focal length of the telescope there is a vast difference in image scale obviously, and as the MN190 image is just Ha and OIII data, the RGB colours are effectively false, although I was pleased to see the star colours coming round to what they are in the proper RGB version.

I got the GSO and QHY8 combination feeling that the duo of a fast (f4) tube together with a One Shot Colour camera would enable me to get more out of the limited clear sky time we seem to get here in the UK.

I probably should have delved a little deeper, and looked at NB filters a bit more, as the new M27 pic was captured with half a moon in the sky, and in a quarter of the time of the other image, with a slower telescope, through a 7nm filter!

Oh well, such is life

This is my third image with the MN190, and getting to grips with it is proving very pleasurable indeed. I'd heard it was good, and I am very pleased with the results so far. See what you think.

7 x 600 secs Ha + 7 x 600 secs OIII (HaO3O3) with darks/flats/bias.

Captured in Nebulosity2, guiding PHD/DSI with TS 9mm OAG, MN190 on an EQ6 Pro. Shame about the jpegging really.

Thanks for looking.

TJ

[steppenwolf]

A fascinating comparison - I'd love one of those 190s myself - excellent image, Tim

[Beyond_Vision]

Both great images Tim the widefields star colour look great. The close up with MN190 looks really detailed and the star shapes to the corners look perfect.

Regards

Kevin

[rich_t]

They're both both very nice, looks like the narrowband shot gives the best 3D like appearance.

Cheers,

Rich.

[FLO]

Looking good Tim

The close up with MN190 looks really detailed and the star shapes to the corners look perfect.

And all without a coma-corrector..

[Tim]

Yes Steve, i'm very impressed with the flatness, it is such a relief not to see stars bloating or stretching in the corners, and much less work in processing putting things "right". I'll put a bigger chip camera on it to see how that fares just as soon as I stop having fun with the H9.......could take a while

[Aza]

Really shows how great the 285 chip is.