ngc5101 and 5078

[Asterix2020 (Paul)]

Ok, I didn't try that. Just did then and you're right. Kind of silly.

[atalas]

Wonderful field!

[marco (Marco Lorenzi)]

Fantastic image Ray, colors, details, all perfect ! You have outdone yourself

Clear skies
Marco

[SkyViking (Rolf)]

That's really good and some very cool galaxies as well, both the foreground ones and all the background fuzzies. Great choice of target and great work

[alistairsam]

Wow, that's stunning Ray.

[Shiraz (Ray)]

Originally Posted by atalas

Wonderful field!

Thanks Louie.

Originally Posted by marco

Fantastic image Ray, colors, details, all perfect ! You have outdone yourself

Clear skies
Marco

thanks Marco - appreciate the comment

Originally Posted by SkyViking

That's really good and some very cool galaxies as well, both the foreground ones and all the background fuzzies. Great choice of target and great work

thanks Rolf - yes, I think that the background Abell group is in some ways more interesting than the foreground.

Originally Posted by alistairsam

Wow, that's stunning Ray.

Thanks Alistair.

regards Ray

[astronobob (Bob)]

Totally grouse piece of work , , ,

[strongmanmike (Michael)]

Originally Posted by strongmanmike

Raaaather good shot that old boy....

I look forward to viewing it back home in a few days, the room here in Thailand is a bit bright but never the less I can tell it's a corker shot

Viva la fast Newt, SX camera and short subs = great combo

Mike

Well I'm home Ray ...aaaand I have had another look at this on my good screen and in nice softly lit evening surrounds at home....

I have to say that any perceived processing flaws or equipment induced artifacts are completely inconsequential and do not prevent this image being as close to a perfect galaxy image that one could hope for with equipment such as yours. It shows lovely balanced colours and has details and an overall quality and fidelity rarely seen, even in images captured by much larger, more traditional long focal length and more expensive systems, using ridiculously longer exposures than yours.

Certainly an image to be very proud of - congratulations

Mike

[Shiraz (Ray)]

Originally Posted by astronobob

Totally grouse piece of work , , ,

thanks Bob

Originally Posted by strongmanmike

Well I'm home Ray ...aaaand I have had another look at this on my good screen and in nice softly lit evening surrounds at home....

I have to say that any perceived processing flaws or equipment induced artifacts are completely inconsequential and do not prevent this image being as close to a perfect galaxy image that one could hope for with equipment such as yours. It shows lovely balanced colours and has details and an overall quality and fidelity rarely seen, even in images captured by much larger, more traditional long focal length and more expensive systems, using ridiculously longer exposures than yours.

Certainly an image to be very proud of - congratulations

Mike

that's a very generous comment Mike and really appreciated - thanks very much for the encouragement. Still many things to work on, but this hobby is great fun eh?

regards Ray

[Nicola (Nicola)]

I'm astonished...simply beautiful!

[Andre27 (Andre)]

Absolutely stunning , well done.

[barx1963 (Malcolm)]

That is quite arguably one of the most astounding images I have seen.
Ray, congratulations!
Looking at the native scale image as I scroll it around I just keep seeing more galaxies. And the two main ones are simply beautiful. And to think this is achieved with and EQ6 and a 10" newt, just fantastic and a credits to your skill.

Cheers

Malcolm

[alpal]

Top image - I hope you produce many more.

[Shiraz (Ray)]

Originally Posted by Nicola

I'm astonished...simply beautiful!

thanks Nicola

Originally Posted by Andre27

Absolutely stunning , well done.

thank you Andre

Originally Posted by barx1963

That is quite arguably one of the most astounding images I have seen.
Ray, congratulations!
Looking at the native scale image as I scroll it around I just keep seeing more galaxies. And the two main ones are simply beautiful. And to think this is achieved with and EQ6 and a 10" newt, just fantastic and a credits to your skill.

Cheers

Malcolm

Thanks Malcolm. I also find it fascinating to wander round the field - there are just so many galaxies out there. Re equipment, I think that the main factor is the seeing - doesn't matter what gear you have, the sky has the last word.

Originally Posted by alpal

Top image - I hope you produce many more.

Thanks Allan - I hope to, but I am getting a bit older every day and the scope seems to be getting heavier .

Regards ray

[madbadgalaxyman (Robert)]

G'day Ray,

I just sent a link to your image to Prof. Ron Buta (University of Alabama), as I feel that the faint outer spiral structure of NGC 5101 is particularly well shown in your image.

Buta essentially "wrote the book" on ring and bar structures in disk galaxies, extending the original Sandage-Hubble and de Vaucouleurs-Sandage-Hubble galaxy classification systems so that they include notations that express more detail about the bar and ring structures that are found within spiral and S0 galaxies.

In the case of NGC 5101, there are at least two ring structures, that which immediately surrounds the bar, and the ring (or broken ring) structure that is formed by the overlap of the outermost spiral arm (or arms).

For comparison purposes I attach a deep UKS image that was made by David Malin:



The following NIR image (J+H+K bands) from the 2MASS survey hints that this galaxy might contain a third ring, a small tight ring immediately surrounding the centre:



Cheers,
Robert

Notes added in edit:
I further note that IIS member Martin Pugh has also recently imaged this field.

As another comparison, here is the B-band ("blue") image from the online version of the De Vaucouleurs Atlas of Galaxies:



The blue knots in the faint outer arms are emphasized, on account of the bandpass of this image.
The outer arm structure is reminiscent of a weak density wave, perhaps caused by the inner bright oval section of this galaxy (the bar plus the bar-encircling ring) acting, itself, as a bar.
(for info on this sort of thing, one can 'google' on the phrase "resonance rings" in the context of galaxy morphology)

[alpal]

Ray,

Thanks Allan - I hope to, but I am getting a bit older every day and the scope seems to be getting heavier .

Regards ray

Hi Ray,.
I know how you feel - it's not easy to set up all that equipment.
It's hard when you work full time.
I can only take pics on Friday or Saturday night &
then of course when it's clear & no Moon.

I am thinking this hobby is more for a retired person with an observatory
that only has to be set up once.

cheers
Allan

[nandopg]

Ray,
In a word: outstanding image !!
I can see all the right concepts applied in your images, from the lenght and quantity of the subs up to the post-processing.
Thank you very much for sharing this beauty,
Fernando

[Shiraz (Ray)]

Originally Posted by madbadgalaxyman

G'day Ray,

I just sent a link to your image to Prof. Ron Buta (University of Alabama), as I feel that the faint outer spiral structure of NGC 5101 is particularly well shown in your image.

Buta essentially "wrote the book" on ring and bar structures in disk galaxies, extending the original Sandage-Hubble and de Vaucouleurs-Sandage-Hubble galaxy classification systems so that they include notations that express more detail about the bar and ring structures that are found within spiral and S0 galaxies.

In the case of NGC 5101, there are at least two ring structures, that which immediately surrounds the bar, and the ring (or broken ring) structure that is formed by the overlap of the outermost spiral arm (or arms).

For comparison purposes I attach a deep UKS image that was made by David Malin:

Attachment 162590

The following NIR image (J+H+K bands) from the 2MASS survey hints that this galaxy might contain a third ring, a small tight ring immediately surrounding the centre:

Attachment 162592

Cheers,
Robert

Notes added in edit:
I further note that IIS member Martin Pugh has also recently imaged this field.

As another comparison, here is the B-band ("blue") image from the online version of the De Vaucouleurs Atlas of Galaxies:

Attachment 162599

The blue knots in the faint outer arms are emphasized, on account of the bandpass of this image.
The outer arm structure is reminiscent of a weak density wave, perhaps caused by the inner bright oval section of this galaxy (the bar plus the bar-encircling ring) acting, itself, as a bar.
(for info on this sort of thing, one can 'google' on the phrase "resonance rings" in the context of galaxy morphology)

Hi Robert. thanks for the comprehensive information and for passing the image on

Originally Posted by alpal

Ray,


Hi Ray,.
I know how you feel - it's not easy to set up all that equipment.
It's hard when you work full time.
I can only take pics on Friday or Saturday night &
then of course when it's clear & no Moon.

I am thinking this hobby is more for a retired person with an observatory
that only has to be set up once.

cheers
Allan

I meet the "retired" bit, but still set up every night - I need to bite the bullet and look at a more permanent setup, but light pollution is getting steadily worse at this location.

Originally Posted by nandopg

Ray,
In a word: outstanding image !!
I can see all the right concepts applied in your images, from the lenght and quantity of the subs up to the post-processing.
Thank you very much for sharing this beauty,
Fernando

Thanks Fernando - I am glad that you like the image - I was very pleased with how it turned out, all considered.

Regards ray

[multiweb (Marc)]

Awesome.

[Shiraz (Ray)]

Originally Posted by multiweb

Awesome.

thanks Marc. regards Ray