Anthony1979

think this is the best im going to get it.... But it still doesnt look right to me..

9 minutes ago, alacant said:

Increase Size X

Just the X or do i unlink it... Because Y changes with it

What do i do here 

On 27/04/2020 at 10:51, alacant said:

Hi

GIMP? To remove vignetting and gradient. Quick method.

Layers:

Duplicate the layer

Blur the layer until you see no stars

Invert the blurred layer

Merge it. I found around 14% did it.

Merge down the layers

Re-adjust the levels

Experiment with layers, %, layer masks, masked stretches

You could also consider getting an astro processing program but learning GIMP first would be my recommended method; you're in total control rather than the computer;)

HTH

I cant work out how to Blur the Duplicate image.... Sorry for the bother but im thick when it comes to this

4 hours ago, alacant said:

Hi

GIMP? To remove vignetting and gradient. Quick method.

Layers:

Duplicate the layer

Blur the layer until you see no stars

Invert the blurred layer

Merge it. I found around 14% did it.

Merge down the layers

Re-adjust the levels

Experiment with layers, %, layer masks, masked stretches

You could also consider getting an astro processing program but learning GIMP first would be my recommended method; you're in total control rather than the computer;)

HTH

Looks really complicated that... Thank you for getting this far.. Think i would had given up by now.... It is really hard work isnt it

OK this is where im at with this image.. i added my dark to it..... so i am getting somewhere arnt i....... My processing is poor because i havent got a clue

11 minutes ago, alacant said:

Here we are, luminance only in GIMP.

It's fine. conclusion: the flat frames were wrong. Easy fix. you now know exactly where to look next;)

Cheers and HTH.

 

Thank you so much.... Ive just put mine in gimp and only adjusted the levels and it come out green

OK here is  the lights only stack

M101 LIGHTS ONLY.TIF

1 minute ago, david_taurus83 said:

Yes

Even though RGB graph isnt aligned

Do i leave this as it is now and just save

What about this

Is this right

I deleted everything ive stacked in frustration so im just restacking the lights only....

Is there a certain setting i should be using in dss.. I am using an unmodded dlsr 

1 minute ago, alacant said:

Hi

The single frame looks pretty good to me. 

Thats what i thought this is why im trying not to give up on it.... To me it seem theres detail there

8 minutes ago, david_taurus83 said:

What software are you using to process after it's been stacked in DSS?

I use GIMP 2.10

29 minutes ago, alacant said:

Hi

The single flat frame shows off centre optics. The master-flat less so. the dust has been removed so in that respect, the flat frames are working. The stack shows intense gradient which is not present on the -quite nice- single frame. It looks like there was a change in orientation and /or light leak into camera or telescope when you took the flat frames.

It's rescuable, but it needed a big hammer to remove the irregularities. I fixed the stars whilst I was at it; there seems to be coma toward the edges.

Anyway, HTH and stay safe.

 

 

 

 

 

 

I did accidently remove camera when i was packing everything up forgetting i had to take flats then put it back on.... So is this where i went wrong ( bad mistake) 

So it is down to my flats being bad

I will do a stack of just lights

2 minutes ago, Anthony1979 said:

Ive never had this problem from my back yard... Ive done all my imaging from my back yard and this is the first problem ive had... 

The one i put on saying stacked lights was with flats darks and bias. Its not just lights sorry

23 minutes ago, MarkAR said:

Just done an extreme stretch of the stacked lights and it looks like it might be light pollution.

Ive never had this problem from my back yard... Ive done all my imaging from my back yard and this is the first problem ive had... 

28 minutes ago, Anthony1979 said:

stacked lights

M101 TEST 4.TIF 276.49 MB · 2 downloads

Sorry this is a full stack of lights,flats,darks and bias... The pic above

stacked lights

master flat

MasterFlat_ISO400.tif

single light frame

_DSC0007.NEF