Centaurus A*

[Atmos]

Taken a little while back but I've decided to revisit this data to see if I can extract a bit more resolution out of it. Went and stacked 320x120s subs and not just the best 146x120s which had FWHM below 1.8". The difference? Not much.

Not only did doubling the exposure time not make much difference to the background smoothness but it also didn't change the FWHM much either. This is possibly due to the weighting I've used for stacking but it was an interesting test to run.

Link to Astrobin (https://www.astrobin.com/full/bdgv2c/B/)

In the centre the stack it had a FWHM of 1.65" so seeing has been pretty kind. Actually has me considering an AO-X to potentially help eek out a little lower FWHM on the nights of better seeing. Going completely unguided at the moment which has its benefits (never chasing the seeing with guiding) but there is some slow (0.1-1s) atmospheric movements which can potentially be removed with an AO unit.

[TrevorW]

Nice plenty detail for just 2 minutes subs :thumbsup:

[Bart]

Highly detailed. Nice colour. What lens or scope was used to give those diffraction spikes?

[Paul Haese]

Lovely work Colin, great detail and colour. I have been collecting on this too, but will need to wait until January to collect more data now.

[Atmos]

Thanks Trevor, I'm read noise limited at 2 minutes at F/10 and OSC, my back yard is pretty bright :lol:



Thanks Bart. I'm using one of the older 3-vein Mewlon 250. 3 veins gives 6 spikes :)



Thanks Paul, I'll be interested to see what you can do with one of your 12".

[Cosmic]

Excellent Colin, loving the detail and structures captured. I was looking at your equipment and was impressed with it. What a lovely setup!:thumbsup:

[Peter Ward]

Makes most big-Mac's look like unappetising pond scum.

A very fine hamburger indeed!

[John K]

Very nice!

Kinda has a professional big telescope film image feel to it with the grain.

Clear skies.

John K.

[strongmanmike]

Yeah, that's what I was thinking John, it's a good shot Col :)

Mike

[multiweb]

That's a really nice close up Colin. Big sampling. :thumbsup::thumbsup::thumbsup:

See the left over pattern from the debayering process under the bright stars? I got that in PI on the pleiades bright blue stars. I think PI struggles with the drizzle combine when the subs are not dithered enough or the number of subs is too small.

[Atmos]

Thanks Daniel, it's starting to get towards the weight limit of the DDM60. I wouldn't really want to go quite as long unguided with a heavier setup as it's likely over 20kg.

[gregbradley]

That's a wonderful Cent A Colin. Very clear in details.

Greg.

[Benjamin]

Wonderful detailed image without anything looking forced. Love it!

[Ryderscope]

Some excellent detail there Colin. Nice work :thumbsup:

[marc4darkskies]

A lovely rendition Colin! Full res version is very impressive! :thumbsup:

[ChrisV]

It's all in the detail. Beautiful Colin!

[cometcatcher]

Holy cow that's sharp!

[codemonkey]

That's a lovely burger, Colin!

"Look ma, no worms!"

[Placidus]

The sharpness of that is just stunning. There are pairs of close doubles there that YOU could drive a truck through, whereas we'd have needed a machete.

[Kempa]

Wonderful image Colin. I can't imagine it is 2 min subs.

[Atmos]

Thanks Kevin, Chris, Marcus, Rodney, Ben & Greg :)



No worms, even after 50-100 iterations of deconvolution ;)



Thanks M&T :)
The stack has a FWHM around 1.7” which certainly helps with those doubles, seeing is everything!



I have a really bright back yard :lol: