Three versions of Rosette

[RAC]

This is the first image i've done with this Mamiya 300mm MF lens. Its a bit of a beast to work with, you need to stop it down slightly to about f3.2 and use an external aperture mask to keep the diffraction spikes away but after doing that its ok.

Atik 383L+ mono,

Mamiya 300mm f2.8 APO Lens @f3.2,

Celestron CGE mount autoguided,

Flats and bias files,

10 x 600sec HA,

12 x 600sec Olll,

12 x 600sec Sll,

All filters Baader 1.25in,

TS filter drawer,

Stacked in DSS and processed in PixInsight.

Mamiya 300mm f2.8 APO by meg rac, on Flickr

Rosette Nebula Bicolour red by meg rac, on Flickr

Rosette Nebula Bicolour yellow by meg rac, on Flickr

Rosette Nebula hubble palettet by meg rac, on Flickr

[zakky2k]

Beast of a lens! Looks much bigger than the Canon 300 F/2.8 ?

Great shots!

[Pete Presland]

great shots, the hubble pallette does seem to show more of the fainter nebula. how and where do use/get the colour sceme for the hubble pallette?

[RAC]

great shots, the hubble pallette does seem to show more of the fainter nebula. how and where do use/get the colour sceme for the hubble pallette?

I just used HA as green, Sll as red and olll as blue with PixInsight.

[Steve 1962]

Great shot - personally I like the last one the most.

It looks as though that lens works really well - not sure I understand your comment about avoiding diffraction spikes - why would you get these from this lens?

[michael.h.f.wilkinson]

Amazing shots. Hubble palette does seem to show most detail.

[RAC]

Great shot - personally I like the last one the most.

It looks as though that lens works really well - not sure I understand your comment about avoiding diffraction spikes - why would you get these from this lens?

If you stop the lens down the aperture blades cause spikes. I don't have to use full stops as i can turn the ring as little as i like.

[Steve 1962]

the aperture blades cause spikes

Aha! Thanks - that's something new learned today!

[Gina]

Goodness me - that's wonderful - beautiful detail

[TakMan]

That's one 'mother' of a lens - and I thought my Nikon f/2.8 70-200 was hefty!

Put me down for the third one also...

The first has a green cast on my (calibrated) monitor...?

Great FOV also!

Damian

[Leveye]

Absolutely stunning like the bluish one the best. Bravo!