The Bubble in HA using DSLR

[tooth_dr]

Yet another clear night with the Moon out, someone must have know I'd just bought an H-a filter lol!

Imaging: SW 250px / Modified Canon 1000d

Guiding: SW EQ6 Pro / SW ED80 Pro / Mono Toucam

Filters/Correctors: Baader MPCC, Astronomik 12nm HA

Exposures: 27 x 600s / ISO1600 / Darks / Flats / Bias

Something doesn't look completely right to me, focus was spot on using bahnitov mask, so maybe guiding wasn't good or the sky was a bit misty perhaps? All subs look a little soft to me?

Thanks for looking

Adam

[Deneb]

Maybe the sky was a bit misty, it ruined my session last night...

Something is amiss..

Nadeem.

[steppenwolf]

I had the same problem last night - it looked clear but there was some very high level moisture that killed my subs.

[tooth_dr]

Thanks guys. So hopefully not a technical problem on my part.

[tooth_dr]

Had another go at this. I'm finding the monochrome difficult to process as it all looks a little washed out atm.

[Psychobilly]

The moon certainly lit up the sky much more than I expected last night.. interested to see how you get on with that 12nm filter Adam...

[Deneb]

im wondering is this any better..

Nadeem.

[Psychobilly]

How have you handled the RGB from the Camera Adam...?

[tooth_dr]

Nadeen that is 100 times better than any of my efforts! Thanks for that!

Peter - good question. I just converted to 16bit on CS2, then deleted the G and B channels, then converted to greyscale and processed. Wrong?

[Psychobilly]

Tryign to remeber what I used to do.. my filters 30-35nm wide...

Will have a look around...

Did you try processing it as a narrowband image in DSS?

Peter...

[tooth_dr]

I think so - as a narrow band superpixel mode is that right? I'd really appreciate a quick work flow, or advise starting with DSS!

[Psychobilly]

I'll see if i can find some old narrowband data to play with

[tooth_dr]

Cheers Peter!

[Psychobilly]

Looking back at the Autosave###.html files that I have for the mono Ha images it looks like I used standard stacking with Lights , Flats and Bias and then took the R channel fromthe RGTB to make the mono image...

With my filter there was some "signal" form the Ha in the green channel as well as the stars with the blue only having the stars...

Peter...

[tooth_dr]

Thanks Peter

The blue channel I find has nothing, and the green just a few stars. So by deleting the G and B, that is the same as just taking the R I take it!??

[Psychobilly]

I tend to select the red channel and create a new grayscale doc from it...

Peter...

[tooth_dr]

How do you do that?

[Psychobilly]

Make sure the channels window is visible (Window - Channels)

then select just the red channel - click on it in the channel window - it should be highlighted in blue

then select all (Ctrl -A)

then File New (Ctrl - N)

then paste in the red channel (Ctrl -V)

Finally flatten the image (Layer - Flatten Image)

[tooth_dr]

Tanks!