geoflewis

2 minutes ago, Kon said:

Would 5ms at high gain also work, I will have to try but this inconsistent seeing makes experimenting difficult.

For me a big downside of very fast capture speeds is the much larger SER files that creates. The only time I've felt that super fast speeds worked was with Mars last year in poor seeing and even then I'd say the jury was still out. With the much smaller ROI on Mars, it wasn't the issue that I get the huge file sizes from the much bigger Jupiter.

1 minute ago, Pete Presland said:

A fine looking image, especially considering its current position.

Thanks Pete

4 minutes ago, Pete Presland said:

So hard to know just how good or bad the data is, then where to stop with it

So very true....!!

10 minutes ago, Pete Presland said:

Previous effort was this and that was the not the first effort either

Believe me, I know that feeling. The 'previous' version as you called it is smoother, but I think too soft - it's the fight we continuously seem to have.

Very nice image Pete, smooth with plenty of detail coming through.

Very nicely done, colour balance is good. Either the seeing was very poor (you hinted at that), or you didn't quite get tight focus.

22 minutes ago, Space Cowboy said:

Absolutely, thanks Geof I'm testing wavesharp at the moment so would be interesting to try your data.

I've PM you a few TIFFs

10 minutes ago, Pete Presland said:

its a magnificent image, the processing looks very good to me. A nice balance between maintaining a natural looking image and a good level of detail. 

Thanks Pete, that's what I keep striving for....

8 minutes ago, Space Cowboy said:

I really need to get some new data of my own rather than waffling 🥴

Happy to share any of my raw stacks, if you want to play with the data....

2 minutes ago, Space Cowboy said:

Sorry Geof I was meaning wavelets in the sharpening sense. People talk about Registax, astrosurface or wavesharp but in my view there are so many different combinations of wavelet settings that similar results can be attained from either application.

I really need to get some new data of my own rather than waffling 🥴

I save my wavelet settings in Registax and Astrosurface, so really no, or very little difference in that part of my processing. What I did differently with Friday's image was different saturation/vibrance and adjusted the colour temp in IA from the default 6550K to 6300K to 'warm up' the image. Maybe the stronger / warmer colours give a different appearance to sharpness, but of course also diffeent seeing conditions, so no 2 images ever process the same.

Nevertheless, it's very helpful to have yours and others eyes on the case; your feedback is very much appreciated, thank you.

1 minute ago, Kon said:

You probably want to delete your exact coordinates from a public forum.

Yeah, I thought that after posting, but it's not that precise....

On 03/12/2023 at 19:25, bosun21 said:

That's the one. Thanks.

Great, so for longtitude use -ve numbers if west of Greenwich, +ve numbers if east of Greenwich. For latitude, northern hemisphere is +ve, southern hemisphere id -ve.

1 hour ago, bosun21 said:

Thanks. I have been using Sharpcap for capture. I will have to have a look at Fire capture. I have just downloaded Winjupos today and I'm watching the tutorials on YouTube. Is the location details in degrees/minutes or decimal? I have watched two videos who say contrasting things. Sorry for the incessant questions but this is a steep learning curve. Much appreciated.

Do you mean this section? It is degrees and minutes, but honestly in my experience it has little bearing on the processing.

If it's something else, please could you share a screenshot.

2 hours ago, Space Cowboy said:

Hmmm.....I think its the type of sharpening. The detail in the softer version still looks coarser than  your previous November images.

 

No sharpening per se, just a different mix of wavelets. I almost never use any sharpening tools on my planetary images.

6 hours ago, IDM said:

It’s interesting that you are going as slow as 100fps, I have always tried to go as fast  as possible, that is clearly not required as judged by your image quality!!

There is a trade off between capture speed and signal. I've had discussion about this with a few different folks, a couple of who are top planetary imagers in Australia, Anthony Wesley and Niall MacNeill, both of whom prefer signal over speed, though their seeing conditions are usually better than we experience in the UK. You only need enough speed to 'freeze' the seeing. Take a look at the discussion thread on this image of mine in Astrobin, where Niall shares the analysis that he did and observations about Anthony Wesley's (nickname Bird) methodology.....

https://www.astrobin.com/0znu04/

That said, as @Kon mentioned, after experimenting with 5ms, 8ms, 10ms and 13ms, I too have settled on 10ms as my goto standard for Jupiter and Saturn. I also shoot for a fairly high histogram of 85%, which seems to help render a better colour balance in post processing.

12 minutes ago, bosun21 said:

Sorry to jump in Geof but what format do i put into Winjupos? Is it decimal degrees or other? Thanks.

Sorry, I'm not understanding the question? Where are you looking to enter something? I save my SERS in FireCapture with WinJupos ready format file names, so I just load them into Image Measurement, fit them to the outline frame overlay and WinJupos does it's thing.

22 minutes ago, Space Cowboy said:

Yep that is a bit too much sharpening. The detail is becoming bloated especially on the north pole. If thats grade 3 and the first version is grade 2 I'd go for grade 1 🙂

Thanks Stuart, oh so I thought you were asking for sharper detail. Here are my other 2 version.....

3 minutes ago, Space Cowboy said:

Great detail again Geof! Personally I prefer your previous images from 25th and I think 11th Nov? They had finer detail with a more natural appearance in my opinion.

Thanks Stuart, the images from 25 Nov and the better one from 11 Nov both had the GRS showing which is always pleasing, so makes them look good, but you may be right. Of course seeing is variable and possible the seeing on 1 Dec wasn't quite as good. I did produce a sharper version, which possibly shows more detail, but it just looked too harsh, but here it is fyi...

I will be interest to have your opinion please.

44 minutes ago, petevasey said:

Thanks, Geoff,  I'm referring to the oblong just above and to the right of the GRS.  I think it's been around for quite a while, but the colour seems to be deepening.

Cheers,

Peter

Ok, yrs that's been there for a couple of months at least. It was there for my 1st look at the GRS this apparition in Sept, but has continued to develop with its interation with the GRS rotation. Here's a few of my images fyi...

4 minutes ago, bosun21 said:

Thanks Geof. I take it that you capture in mono?

Well yes, IR is mono, but I'm using the very IR sensitive colour camera ASI462MC.

Nicely done Peter. Which feature beside the GRS are you referring to. Oval BA is a redish feature just below and to the right of the GRS which seems to be reforming after it's encounter with the GRS a few weeks ago.

Excellent animation, very consitent processing with good details showing.

Very nice image. I use the same capture settings and duration for IR as I do for colour and process them almost identically (other than colour adjustments of course).

8 hours ago, Roy Foreman said:

Oh for some clear steady skies so I can have a go at Saturn.  Not that my result will be as good as yours. Nice image considering its low altitude.

Thanks Roy, yes, low elevation and getting smaller as it recedes from Earth in their respective orbits.

8 hours ago, Roy Foreman said:

Very nice image. Lots of detail and just the right amount of sharpness.

Thanks Roy, I really appreciate the feedback as I've been struggling to get the processing right, though I think that I'm getting close now.