Stacking...?

"Robert Geake" wrote in message
...
Hi Chaps

I had a bash at taking a bunch of 10 second exposures of M13 the
other day, then tried registax to stack them....

The result was worse than the best frame!
Could this be because i did not pick the best
frames from the bunch ?


Here's my attempt on M57 only, lifes too short to wait for M13 on a dial up
:-(

http://www.leadbeaterhome.fsnet.co.uk/M57_temp.htm

Aligned and stacked with k3ccdtools
Low histogram point set to reduce noise
High histogram point set to stretch contrast
Gamma increased to 1.8 to stretch faint detail
Red curve tweaked in photoshop to bring out colours in ring

Robin

On Tue, 8 Jul 2003 21:01:42 +0100, "Robin Leadbeater"
wrote:


"Robert Geake" wrote in message
...
Hi Chaps

I had a bash at taking a bunch of 10 second exposures of M13 the
other day, then tried registax to stack them....

The result was worse than the best frame!
Could this be because i did not pick the best
frames from the bunch ?


Here's my attempt on M57 only, lifes too short to wait for M13 on a dial up
:-(

http://www.leadbeaterhome.fsnet.co.uk/M57_temp.htm

Aligned and stacked with k3ccdtools
Low histogram point set to reduce noise
High histogram point set to stretch contrast
Gamma increased to 1.8 to stretch faint detail
Red curve tweaked in photoshop to bring out colours in ring

Very nice Robin!

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

On Tue, 8 Jul 2003 21:01:42 +0100, "Robin Leadbeater"
wrote:


"Robert Geake" wrote in message
...
Hi Chaps

I had a bash at taking a bunch of 10 second exposures of M13 the
other day, then tried registax to stack them....

The result was worse than the best frame!
Could this be because i did not pick the best
frames from the bunch ?


Here's my attempt on M57 only, lifes too short to wait for M13 on a dial up
:-(

http://www.leadbeaterhome.fsnet.co.uk/M57_temp.htm

Aligned and stacked with k3ccdtools
Low histogram point set to reduce noise
High histogram point set to stretch contrast
Gamma increased to 1.8 to stretch faint detail
Red curve tweaked in photoshop to bring out colours in ring

Very nice Robin!

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

Ahh, Exellent Smithers.....

http://robert.thegeakes.co.uk/astro/m13/00result.jpg (473kb)

Rob

"Robert Geake" wrote in message
...
Hi Chaps

I had a bash at taking a bunch of 10 second exposures of M13 the
other day, then tried registax to stack them....

The result was worse than the best frame!
Could this be because i did not pick the best
frames from the bunch ?

Thanks

Rob

--
________________________
http://robert.thegeakes.co.uk/
51:21N 00:23E

Ahh, Exellent Smithers.....

http://robert.thegeakes.co.uk/astro/m13/00result.jpg (473kb)

Rob

"Robert Geake" wrote in message
...
Hi Chaps

I had a bash at taking a bunch of 10 second exposures of M13 the
other day, then tried registax to stack them....

The result was worse than the best frame!
Could this be because i did not pick the best
frames from the bunch ?

Thanks

Rob

--
________________________
http://robert.thegeakes.co.uk/
51:21N 00:23E

On Wed, 9 Jul 2003 09:32:39 +0000 (UTC), "Robert Geake"
wrote:

Ahh, Exellent Smithers.....

http://robert.thegeakes.co.uk/astro/m13/00result.jpg (473kb)

Rob

That's better Rob!

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

On Wed, 9 Jul 2003 09:32:39 +0000 (UTC), "Robert Geake"
wrote:

Ahh, Exellent Smithers.....

http://robert.thegeakes.co.uk/astro/m13/00result.jpg (473kb)

Rob

That's better Rob!

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

On Wed, 9 Jul 2003 10:50:49 +0000 (UTC), "Robert Geake"
wrote:

Just needed a kick up the jacks to get me
to actually try a manual stack!

That image is only 6 frames as well...

Only took about 30 mins as well, next time
i will set the digicam to ISO50, that should
reduce noise quite a bit.

If you hadn't been brave enough to post a link to your original 'poor'
(in the nicest possible way of course) attempts, you would not have
ended up with the nice result you have.

Sometimes we all need a kick up the backside to push us closer to
excellence. (Sick buckets at the ready sir...!)

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

On Wed, 9 Jul 2003 10:50:49 +0000 (UTC), "Robert Geake"
wrote:

Just needed a kick up the jacks to get me
to actually try a manual stack!

That image is only 6 frames as well...

Only took about 30 mins as well, next time
i will set the digicam to ISO50, that should
reduce noise quite a bit.

If you hadn't been brave enough to post a link to your original 'poor'
(in the nicest possible way of course) attempts, you would not have
ended up with the nice result you have.

Sometimes we all need a kick up the backside to push us closer to
excellence. (Sick buckets at the ready sir...!)

--
Pete
Homepage at http://www.pbl33.co.uk
CCD/digicam astronomy

"Pete Lawrence" wrote in message
Very nice Robin!

Thanks Pete. On reflection, I probably pushed it a bit too far for effect.
I would rather be imaging though, but I guess it is something to do while
waiting for some....

Clear Skies
Robin