Something I am not geting right

[Starlight 1]

This is only old subs I keep playing around with, It never come out right think its 25 x 300s ha,S2,03, no Darks or flats just subs .

it look like I am taking subs in the fog. some help please.

[Steve Ward]

I guess the lack of Darks and Flats has some part to play ... ?

[Starlight 1]

The Starlight camera do not use Darks, and it cleaned before any subs taking.

[triton1]

Hey you split Alnitak well done.

[D4N]

I think it would help to see the component mono images, your star colour is quite neutral to have come from Ha/SII/OIII data how have you mapped the colours?

/Dan

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[Starlight 1]

I think it would help to see the component mono images, your star colour is quite neutral to have come from Ha/SII/OIII data how have you mapped the colours?

/Dan

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 Good point Dan , Ha R, 0III B, S2 G,

[ChrisLX200]

You (probably) have a high background on all channels, so likely you need to use a different stretch ('Wipe' in StarTools, 'DBE' in PixInsight, 'Levels' in PS) to remove it then stretch what remains.

ChrisH

[Starlight 1]

You (probably) have a high background on all channels, so likely you need to use a different stretch ('Wipe' in StarTools, 'DBE' in PixInsight, 'Levels' in PS) to remove it then stretch what remains.

ChrisH

I move file to my mac have PixInsight on that one. every thing was done in nebulosity 4 on window I have no paint programs on this one.

[Steve Ward]

The Starlight camera do not use Darks, and it cleaned before any subs taking.

Well as there was no shooting info included regarding equipment ...... 

[Starlight 1]

Well as there was no shooting info included regarding equipment ...... 

Sorry Steve forgot to put it in.

[Starlight 1]

You (probably) have a high background on all channels, so likely you need to use a different stretch ('Wipe' in StarTools, 'DBE' in PixInsight, 'Levels' in PS) to remove it then stretch what remains.

ChrisH

Dbe is not showing any blue.

[Starlight 1]

I have move ha, 0II,S2, around. do it look odd .

[D4N]

It might be that you just don't have enough data in your OIII and SII channels, I get this all the time. The Ha data is great on its own but when I bring in the other channels it looks poor because the OIII and SII is overstretched.

/Dan

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[Starlight 1]

Thanks Dan , I got 2 hours of 03, S2 last week trying to save all new subs till the end Feb , as I am new to CCD with fillers , Some make easy work of it " but not me"!!!!!!!

[D4N]

Yeh it seems the Ha is both more resilient to unwanted signal from light pollution and much richer in desirable signal than the SII and OIII.

Even when I am trying to get more OIII than Ha I often end up with more Ha as OIII on moonlit nights isn't very good.

On some targets there isn't any OIII anyway and all the OIII filter picks up is reflection nebulosity that is broad band and stars.

/Dan

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