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Old 21-01-2006, 03:28 PM
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Thumbs up My Best Saturn So Far

OK. Finally got some semi-decent seeing last night.

This was captured last night around 1.30am with the C9.25, NexImage webcam with IR/UV filter and 2.5x Powermate.

Settings:
Gamma 40-50%, brightness around 60%

10fps, 1/10sec, 100% saturation

Minimal wavelets, mainly in 5 and 6.

No other processing. That's still to come

I think it shows a fair bit of progress from just a few weeks ago?

We did have some probs with onion rings on other avi's but that was due to experimenting at 15fps rather than 10fps.

I've included our effort from a few weeks ago as a comparison. It's the one on the right.

Feedback most welcome
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Old 21-01-2006, 04:07 PM
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lots of eyes on you!

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you have got to be happy with that. let me guess.... a litttle extra spring to the step.... a sideways glance to see if anyone is watching....nope, i'm all alone..........you beeauty you shout as you leap into the air and punch the sky...!!!

well done, now it is just getting ready for great seeing nights, making sure the collimation is spot on etc etc

Last edited by acropolite; 22-01-2006 at 11:34 AM.
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  #3  
Old 21-01-2006, 04:15 PM
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asimov (John)
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That's very nice Matt!! A dramatic improvement. Good to see you experimenting with different frame rates etc, It's the only sure fire way to learn!

Well done & congratulations!
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Old 21-01-2006, 04:36 PM
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Thanks DP and Asi.

Yeah, very happy. Glad there's some improvement.

Dave, it's uncanny you quoted me exactly when I saw the first images on the screen!

I'm having a bit of a problem today with Registax. Our problem is: We saved a previous selection of frames as a project file so we could return later to cull the frames further to 50 or 60 of the very best frames for a stacking.

Once we choose the reference frame and set quality filter parameters and click align the process keeps stopping around the 89% complete point without any error message. It just stops?

It appears to have "ranked" our loaded selection of best frames in the frame list. But when we cull the list further it freezes again after clicking on "Limit".

Anyone had the same problems? Any help would be great.
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Old 21-01-2006, 04:47 PM
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lots of eyes on you!

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hmmm, i do not trust registax to stop mid stream etc. you can output the fslected images into an avi movie at stack time, but generally i always start again. i have played with the projects, but it does seem to do what I expect it to do???
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Old 21-01-2006, 05:26 PM
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The 3 times I've played with registax project files I've had problems twice. I don't bother now. Never had your particular problen though Matt..

BTW I'm talking V2 not 3 here.
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Old 21-01-2006, 05:47 PM
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Well done, Matt! How did she look through me old chum, the 13 Nag?
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Old 21-01-2006, 05:54 PM
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Rod

Very nice, mate.

I was actually very pleasantly surprised because I'd read plenty about the 13mm Nag not really being a planetary EP.

The view was very crisp and the extra FOV allowed for plenty of room to take in plenty of moons.

The dark background was also very nice
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Old 21-01-2006, 05:55 PM
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Can't wait for the 10mm Pentax to arrive though
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Old 21-01-2006, 05:58 PM
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Great improvement Matt , well done .
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Old 21-01-2006, 05:59 PM
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lots of eyes on you!

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Quote:
Originally Posted by matt
Can't wait for the 10mm Pentax to arrive though
i am also keen to see what you think of the pentax, it is something i am keen to look thru one day!
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Old 21-01-2006, 06:04 PM
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Well done Matt.....Just imagine what you could do in 3 months time.
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Old 21-01-2006, 06:08 PM
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Davo

I'll definitely offer comment on the XW.

What with Saturn being a target and Jupiter looming large, the Pentax will be getting plenty of work.

You never know your luck mate. I might pop it in the mail for you in a few months to have a look, if you haven't already bought yourself one by then?

I suspect I won't have to bother
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Old 21-01-2006, 06:13 PM
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Tony

I know what you mean. The moment I packed the gear up last night and looked over to the NE... there the big fella was!

I gazed for quite some time in that direction and muttered skywards:"Don't worry mate, we'll meet soon enough".

I was tempted to get the scope back out but it was just a bit low and a bit close to the moon.

That and I was already happy with the night's efforts.
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  #15  
Old 21-01-2006, 06:16 PM
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great Stuff Matt, very nice and improving all the time, good to see you getting clear skies - so come on where's my mars shot as well .

how many frames are stacked here, I think you'll find that only 50-60 will be a little grainy no matter how good, but try and see.

Not sure what tod do with Registax - I find it very buggy at the best of times and it's always freezing up if I try and stop any process or step back?


Let me know if you want someone else to have a play with your image.

cheers mate
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Old 21-01-2006, 06:32 PM
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Rob

Ended up being 139 frames out of 1100.

We had the lowest quality setting in quality estimate set at 85%. So, we obviously dumped a lot of frames.

Where would you have put the % at? Depends on the frames, I know, but it looked like there were plenty more we could have used for stacking.

Still learning this Registax business.

No mars for you, mate. Don't have a 4 or 5x Powermate and it was hard enough getting saturn on the CCD chip at 2.5x

Would be happy for you to have a crack at the image. Would you like the Avi..? Or would you prefer a TIFF of the stacked 139 frames ready for wavelets?

Thanks mate
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Old 21-01-2006, 06:50 PM
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Hey Matt, you can really go to town with Saturn in terms of frames you collect and stack. Because it's so far away you can run long avi sequences without rotational smearing - I typically do at least 200 sec and get 2000 frames, but occasionally will join two together. I try and get 1000 frames for actual stacking and feel you need around 600 to really overcome grain issues. It's all a bit suck and see with each avi though so why don't you just set the quality for your to end up with around 600 frames and just see what happens - you might be pleasantly surprised... or it might be worse.

I'm in the dialup doldrums ao can't take your avi, but if you e-mail over a TIFF or BMP I'll see if I can tweak any extra out of it.

Cheers matee,
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Old 21-01-2006, 07:01 PM
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OK

Well. Have quickly adjusted quality %.

This time we had 1100 frames for stacking.

Worked a few wavelets. Do you think it's improved. I think there's more detail in the polar hood?

You judge.
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Old 21-01-2006, 07:08 PM
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Quote:
Originally Posted by matt
OK

Well. Have quickly adjusted quality %.

This time we had 1100 frames for stacking.

Worked a few wavelets. Do you think it's improved. I think there's more detail in the polar hood?

You judge.
I think so, if it's the one on the left, grain seems better and banding clearer. There seems a bit more red on the edge which suggests you need to align the colour channels - have you done this in wavelets; if you haven't just select the tab on the right edge that says RGB align and press "estimate" and it should do the trick.
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Old 21-01-2006, 07:16 PM
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yes it's the one on the left.

will do the colour align

thanks mate

am sending you the tiff

this rocks!!!!!!!!!!!!
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