At Last

[blinky]

Well finally got a Saturn I am happy with

796 out of 20000 stacked. I also had an IR filter and a Neodynium on as well. Doubled the size in registax then saved at a quarter size.

Have another one to be stacked (one without the Neo filter) so will see that one tomorrow.

[Andrew*]

20,000 frames?!? Also, I don't know how much effect a Neo filter would have on Saturn...

But anyway, that's a fantastic image. I bet you're pleased.

Andrew

[geppetto]

You got some nice detail in that one Blinky

Well done

[blinky]

Sorry Andrew 2,000 frames! I did take a 5,000 frame capture at the weekend but it would not read in Registax so thought 2,000 was a good figure.

[daz]

5000 frames would be too big for Registax I think blinky - what version?

Try using VirtualDub to cut it into chunks, and then load the separate files into Registax

[blinky]

If I split the video up I cannot see how to get registax to continue stacking. Do I not then have to manually select the point for stacking in each segment? This would be OK if I have a nice star I could select in each segment but with Saturn I cannot see how I could select exactly the same point on multiple clips, or am I missing something?

[Chubster]

Hi Blinky...another great pic but can I ask why the "then saved at a quarter size" I have noticed you have done this a couple of times....is this just too reduce the file size or is there more to it

Cheers

Chubs

[blinky]

I saw in one of the tips for planetry images that in registax increase the image when stacking then decrease the image again when finished. I find that increasing the image gives a lot of noise et but when shrunk back down they are smoothed out and give a nice image. I might try it again and not bother increasing/decreasing again to see what it comes out like.

Blowing a gale here so wont be out tonight anyway!

[Andrew*]

talk about it! I was considering getting up before work tomorrow morning, but not to the 29mph winds that are promised!

I can't really see why you would get a better image by blowing it up and shrinking. I thought that was one of the best ways to ruin an image!

Andrew

[daz]

Andrew - Because the resampling algorithms are different when processing that when finished. Once the image is processed, it's a simple re-sizing by x%. Any noise is therefore increased as well.

Blinky - Registax just loads each file and appends the frames to the ones currently open. You shouldn't need to reselect alignment points

P.S. Moved to Imaging section

[Chubster]

Sorry for being dumb..so do you resize before processing ?

[daz]

No Chub, during.

You can tell Registax to re-sample bigger as it processes each frame, then once it has stacked everything, resize it back it down again. You'll probably need to tweak the wavelets again after.

I'll try and so a before-and-after type thing over the weekend, so you can see what I mean.

P.S. no such thing as a dumb question!!

[Chubster]

Cheers Daz

Is this done at the optimize stage...ie resampling ? If so is there a preferred method, Bell lanczos etc?

Cheers Chub

[daz]

Yep, that's the one.

I don't think there's a right or wrong option there, different routines will give different results I guess. When I've used this option, I've used Mitchell (? Not got registax on this machine, but I think that's what it's called!!).

If I get time, I'll do a comparison of the options so you can see the results