Centaurus A

gregbradley · #1 20-03-2015, 02:57 PM

Its been a while since I posted an image here.

I took this one last weekend in heavy wind. I had tuned up my mounts polar alignment, PEC curve and formed a large Protrack model for it which also makes tracking corrections.

AP140, Trius 694, PMX mount, MMOAG guider with STi with reducer and infrared filter.

4 hours.

http://www.pbase.com/gregbradley/image/159486218/large

More of a test really.

Greg.

clive milne · #2 20-03-2015, 03:03 PM

Beautifully processed.

LewisM · #3 20-03-2015, 03:44 PM

Right up there with Rolf's 300,000 hour image

Seriously nice job well processed

alpal · #4 20-03-2015, 09:26 PM

Hi Greg,
Nice job to capture that halo so well in only 4 hours.

cheers
Allan

DJT (David) · #5 20-03-2015, 09:37 PM

Gorgeous image, Greg. Can't wait to see what you do when it's not a test.

gregbradley · #6 21-03-2015, 06:18 AM

Quote:

Originally Posted by clive milne

Beautifully processed.

Thanks very much Clive.

Quote:

Originally Posted by LewisM

Right up there with Rolf's 300,000 hour image

Seriously nice job well processed

Thanks Lewis. I was happy with the result from only 4 hours.

Quote:

Originally Posted by alpal

Hi Greg,
Nice job to capture that halo so well in only 4 hours.

cheers
Allan

Thanks Allan. The 77% QE of the chip shows through plus the totally dark site.

Quote:

Originally Posted by DJT

Gorgeous image, Greg. Can't wait to see what you do when it's not a test.

Thanks. I also have the AP reducer/corrector. That makes it F5.6. It distorted the guide stars in the MMOAG pretty badly though. I thought of a solution to that afterwards so if I can get it working well it may be the basic setup for that scope with that camera. Just a bit wider field works well with many objects.

This AP scope is super sharp and the sharpest optics I have ever used.

Greg.

RickS (Rick) · #7 21-03-2015, 11:32 AM

Lots of halo, Greg, and an impressive test. Looks to me like the background has a blue/green cast?

Cheers,
Rick.

gregbradley · #8 21-03-2015, 01:06 PM

Quote:

Originally Posted by RickS

Lots of halo, Greg, and an impressive test. Looks to me like the background has a blue/green cast?

Cheers,
Rick.

Thanks Rick. I corrected that some more and its more neutral now, perhaps a tad left. I blame it on Mike's influence as he often has a bluish look which I quite like. So I reckon its his bad influence then?

Greg.

RickS (Rick) · #9 21-03-2015, 01:21 PM

Quote:

Originally Posted by gregbradley

Thanks Rick. I corrected that some more and its more neutral now, perhaps a tad left. I blame it on Mike's influence as he often has a bluish look which I quite like. So I reckon its his bad influence then?

Greg.

He's trouble, that Mikey

strongmanmike (Michael) · #10 21-03-2015, 02:06 PM

Quote:

Originally Posted by gregbradley

Thanks Rick. I corrected that some more and its more neutral now, perhaps a tad left. I blame it on Mike's influence as he often has a bluish look which I quite like. So I reckon its his bad influence then?

Greg.

Quote:

Originally Posted by RickS

He's trouble, that Mikey

Yeah yeah, pick on the Blue Angel

Nice work Greg but I agree with Rick... and looks like you have damaged the stars a bit too, fix these and the Blue Angel will be happy - Amen

Mike

rustigsmed (Russell) · #11 21-03-2015, 02:52 PM

Awesome test! Can't believe it's Centaurus a season already.

gregbradley · #12 21-03-2015, 03:42 PM

Quote:

Originally Posted by strongmanmike

Yeah yeah, pick on the Blue Angel

Nice work Greg but I agree with Rick... and looks like you have damaged the stars a bit too, fix these and the Blue Angel will be happy - Amen

Mike

I did get rid of most of the bluish background since Rick posted. Can you see more? Stars do get a bit stetched in the process. Perhaps I should mask them during the stretching stage?

Quote:

Originally Posted by rustigsmed

Awesome test! Can't believe it's Centaurus a season already.

Thanks. Yes its in a good position at the moment.

Greg.

Ross G · #13 24-03-2015, 08:09 PM

A beautiful Centaurus A photo Greg.

Nice composition with deep detail.

Smooth colours and tones.

I love it.

Ross.

gregbradley · #14 25-03-2015, 08:18 AM

Quote:

Originally Posted by Ross G

A beautiful Centaurus A photo Greg.

Nice composition with deep detail.

Smooth colours and tones.

I love it.

Ross.

Thanks Ross! I may add to this one next time I get to my dark site.

Greg.

sjastro · #15 25-03-2015, 08:50 AM

We are being spoilt with some great images Centaurus A images Greg.

Steven

gregbradley · #16 25-03-2015, 08:59 AM

Quote:

Originally Posted by sjastro

We are being spoilt with some great images Centaurus A images Greg.

Steven

Thanks Steven. I've imaged this area many times I should try and add some data from earlier acquisitions as well as the fresh data.

Greg.

Stevec35 (Steve) · #17 25-03-2015, 03:15 PM

Pretty good for a test Greg! Nice to see an image from you again.

Cheers

Steve

gregbradley · #18 25-03-2015, 03:39 PM

Quote:

Originally Posted by Stevec35

Pretty good for a test Greg! Nice to see an image from you again.

Cheers

Steve

Thanks Steve. Yes it has been a while. I have a few ready to be processed now. I've had a couple before but they weren't good enough and then endless cloudy nights here in Sydney have made it hard.

Greg.