A New Swan

[cometcatcher (Kevin)]

That's really an awesome pic Mike, with all the background nebula around M17.

How are you getting such a wide field (1.8 x 1.8 deg) of view from that 12"? Is that CCD one of those big 50 x 50mm ones? Still, that's a huge light cone for a 12 inch scope. Does it have much vignetting with that field?

[strongmanmike (Michael)]

Originally Posted by ghsmith45

mmmmm... Looks like too much red at first sight, but it kinda grows on you the more you look at it. The star colours are nicely balanced and that says to me that colour in the nebulosity is about right. The detail in the nebulosity is very good. Well done yet again.
Geoff

Thanks Geoff, yeah, bit like mould huh?

Nah, actually, looking at images for while will often affect first impressions, so... I'm glad you stared for long enough to be softened a little

Originally Posted by cometcatcher

That's really an awesome pic Mike, with all the background nebula around M17.

Thanks a lot Kevin

How are you getting such a wide field (1.8 x 1.8 deg) of view from that 12"? Is that CCD one of those big 50 x 50mm ones? Still, that's a huge light cone for a 12 inch scope. Does it have much vignetting with that field?

Not quite, it is the 16803 chip which is 37mm X 37mm so at 1120mm FL it is a big field

Mike

[alpal]

Nice pic Mike,
I wish you'd put that 694 away & use the large format more.
The pic is a bit too bright in red for me but that's to your taste.

cheers
Allan

[strongmanmike (Michael)]

Originally Posted by alpal

Nice pic Mike,
I wish you'd put that 694 away & use the large format more.
The pic is a bit too bright in red for me but that's to your taste.

cheers
Allan

Ahhh yes, been thinking this as well...I don't have OAG available for the big ProLine and I have become so used to the lack of differential flexure with the current SX OAG system, not to mention the 2X better resolution due to the smaller pixels of the 694....

It will happen though...at some stage

Oh well Al, those pesky photons from excited electrons of Ha/Hb emission will make'emselves Magenta/Red when they dance

Mike

[SkyViking (Rolf)]

A great swan indeed Mike, nice to see your combinations of old and new data. And yes this area is predominantly magenta due to H alpha+beta emission, thanks for establishing that

I'm also currently revisiting a subject from last year with some new added data (same FOV though). This image processing can be addictive!

[strongmanmike (Michael)]

[QUOTE=SkyViking;1153956]A great swan indeed Mike, nice to see your combinations of old and new data. And yes this area is predominantly magenta due to H alpha+beta emission, thanks for establishing that [QUOTE/]

Thanks Rolfy

I'm also currently revisiting a subject from last year with some new added data (same FOV though). This image processing can be addictive!

...?.. ...Centaurus A?

addictive ...what do you mean you curved, leveled, DDP mask you

[SkyViking (Rolf)]

Originally Posted by strongmanmike

...?.. ...Centaurus A?

No need to panic Mike It's not CenA because that was back in 2013 - time flies!

[strongmanmike (Michael)]

Originally Posted by SkyViking

No need to panic Mike It's not CenA because that was back in 2013 - time flies!

Ok......those dusty pillars near Orion...?

[alpal]

Originally Posted by strongmanmike

Ahhh yes, been thinking this as well...I don't have OAG available for the big ProLine and I have become so used to the lack of differential flexure with the current SX OAG system, not to mention the 2X better resolution due to the smaller pixels of the 694....

It will happen though...at some stage

Oh well Al, those pesky photons from excited electrons of Ha/Hb emission will make'emselves Magenta/Red when they dance

Mike

Hi Mike,
I hope you can get the OAG working with the larger format system.
Using drizzle & dithering you should be able to recover some resolution
as you would be undersampling a bit although the seeing is everything.

cheers
Allan

[strongmanmike (Michael)]

Originally Posted by alpal

although the seeing is everything.

cheers
Allan

Yeah too true but I've seen a distinct improvement in resolution between using the 4.5 micon pixel H694 with OAG on the AG12 compared to the 9 micron pixel 16803 using piggyback guiding...having said that, I am sure getting OAG working with the 16803 would claw some of that advantage back.

Mike