View Full Version here: : First Try
Aster
04-11-2007, 12:44 PM
My first try at CCD Imaging with an 8" F5.6 on an EQ6 mount, DSI Pro with IR filter. Around 12 images each stacked in Registack. Seeing was average, focus could be better.
Must put my glasses on next time :)
Alexander
They look great. Have that cursed DSI Pro interlace problem though.....
Looks good, pity about that stupid interlacing :(
Astroman
04-11-2007, 03:03 PM
The interlacing can be removed with Photoshop under Filters>Video>de-interlace. If you have it that is. I just tried it and it cleaned it quite well.
Nice shots by the way.
Tamtarn
04-11-2007, 03:46 PM
Andrew, any chance of seeing the difference after interlacing removal in photoshop.
With Alexander's permission of course.
David
Here is my effort (Hope you don't mind Alexander :D )
Composite image showing both states - the left hand side is normal, right side has simply had the deinterlacing done as above, no further processing at all. I left Photoshop's default settings in place for the deinterlace filter.
The capture program I use (Nebulosity) has this function also.
Tamtarn
04-11-2007, 04:39 PM
That's a great composite image Lee showing what can be done to remove interlacing with a really good result.
I'm sure Alexander will be keen to try this as his first images on the DSI Pro were really good apart from the interlacing.
We too have learnt something new. - Thanks
That deinterlacing works wonders on the image:thumbsup:
Alchemy
04-11-2007, 06:10 PM
worked a treat. now it looks good.:)
now you know how to fix it post more.
iceman
04-11-2007, 06:24 PM
Great first result. Why does the DSI do that interlacing in the first place? I can't see a reason for it except to frustrate the imager :)
I think it is do with how the data is read from the CCD.... apparently much worse with shorter exposures too. Succeeds in the frustration department though! What gets me is why Meade doesn't automatically deinterlace it for you.... :shrug:
CoombellKid
04-11-2007, 08:54 PM
When they were first released I was a member of a DSI yahoo group. The
interlaced problem touted there was. It went something like this, with the
DSI it scans it data twice per image like scanning odd lines first then goes
back and scans the even numbered lines. The problem with interlacing
starts to appear at short exposures like needed for luna and planetary
imaging. Thats not to say there haven't been some fantastic images
of luna and planetary objects, hence the o'l deinterlacing in PS works
a treat.
just my 2 cent worth, correct me if I'm wrong.
regards,CS
CoombellKid
04-11-2007, 09:00 PM
btw, I ran those images through deinterlacing in PS you would never known
those lines were there : ) did the same thing as Lee
regards,CS
You do see it on long exposure too - but seems fainter - shows up as you stretch the image.
Aster
05-11-2007, 02:52 PM
Go for it
Alexander
Aster
05-11-2007, 03:11 PM
Thanks all for your kind remarks. Hope to have my 10" F6 going withing a couple of weeks and do a bit better ;)
As to the tip on de-interlacing in photoshop - THANKS - took a while before I understood what you meant.
To be honest, I didn't notice any lines at first, old age and bad eyesight, until a mate said something along the lines that he would find out how to get rid of the lines, What lines I said :(
But after all you bods mentioned lines I enlarged the image on the LCD monitor and saw what you meant.
Alexander
Great pics Alexander, and nice work with the deinterlasing (I will have to remember that trick!)
Astroman
05-11-2007, 10:57 PM
Pic is below fixed.
ok here is the right image lol..
Astroman
05-11-2007, 11:05 PM
did you have a satellite go through too? got this weird line through the image also. Although satellites tend to look like black blobs on a lit moon.
Aster
06-11-2007, 12:06 PM
What line are we talking about now ??? Can't remember a satelitte.
Have played around with some crummy images in Registack and found some images with lines in it which I put down to stacking error. Not enough alignment points.
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