Re: Editing help

[Kenboy]

Hi all, 

Took a shot of Orion last night, with a Canon 50mm lens  

I've got PixInsight, but can't seem to get much out of the image...

anyone fancy a try with editing?? 

I've attached the stacked picture

Orion 11-02-21.TIF

[Aramcheck]

Thanks for sharing the data. I had a very quick go... but I think dealing with the flare on the bright stars will be a challenge!
Cheers
Ivor

[Kenboy]

 

3 hours ago, Aramcheck said:

Thanks for sharing the data. I had a very quick go... but I think dealing with the flare on the bright stars will be a challenge!
Cheers
Ivor

 

Hey man, awesome thanks 

What is causing these flares? was it a smudge on my lens? 

Also this was my set-up: 

Astro-modified Canon 550d, Svbony CLS filter, Canon 50mm lens f/1.8 STM, Bortle sky 5 

ISO 800, f/2.8, 1 min exposures x 40

Any suggestions on how I can improve to capture more detail and colour? 

[Aramcheck]

16 hours ago, Kenboy said:

What is causing these flares?

I think it's lens flare, but as I don't have any camera lenses I can't advise on that (so far I've only taken prime focus pictures with the DLSR attached to a 'scope). I've read that it can be reduced by more careful processing, i.e. creating & applying a mask of the flare when stretching... It may be worth trying to take some images without the filter, to check that isn't the problem & also with different lens if you have one.

Colours are largely down to the the choices made in processing. You can alter the colour saturation, to help bring out the nebulous regions, but you'd benefit I think from a longer total exposure time. Here's a DLSR image of the same region but with 230mins total exposure:- https://britastro.org/observations/observation.php?id=20190204_195500_3b5f179fe8536100

M42 - Orion Nebula, is quite bright in comparison to the Barnard's Loop, so it'll be difficult to bring out the loop without blowing-out the core of M42... (You can always process the image twice & then combine them)

The amount of detail you can capture is down to the resolution of the equipment (focal length and camera pixel size) & sky conditions. The Canon 550d has a pixel size of 4.3 microns, so with a 50mm lens the resolution won't be better than 17.74 arcseconds/pixel. (See https://astronomy.tools/calculators/ccd) M42 is about 52 arcmins across (i.e 52 x 60 = 3120 arc seconds), so will only cover about 175 pixels on the camera. Longer focal length lens (or scope) will enable you to see more detail, but then you won't see as much of the sky...

Hopefully somebody more knowledgeable will chime in & provide some better advice!

Cheers
Ivor

 

[Kenboy]

39 minutes ago, Aramcheck said:

I think it's lens flare, but as I don't have any camera lenses I can't advise on that (so far I've only taken prime focus pictures with the DLSR attached to a 'scope). I've read that it can be reduced by more careful processing, i.e. creating & applying a mask of the flare when stretching... It may be worth trying to take some images without the filter, to check that isn't the problem & also with different lens if you have one.

Colours are largely down to the the choices made in processing. You can alter the colour saturation, to help bring out the nebulous regions, but you'd benefit I think from a longer total exposure time. Here's a DLSR image of the same region but with 230mins total exposure:- https://britastro.org/observations/observation.php?id=20190204_195500_3b5f179fe8536100

M42 - Orion Nebula, is quite bright in comparison to the Barnard's Loop, so it'll be difficult to bring out the loop without blowing-out the core of M42... (You can always process the image twice & then combine them)

The amount of detail you can capture is down to the resolution of the equipment (focal length and camera pixel size) & sky conditions. The Canon 550d has a pixel size of 4.3 microns, so with a 50mm lens the resolution won't be better than 17.74 arcseconds/pixel. (See https://astronomy.tools/calculators/ccd) M42 is about 52 arcmins across (i.e 52 x 60 = 3120 arc seconds), so will only cover about 175 pixels on the camera. Longer focal length lens (or scope) will enable you to see more detail, but then you won't see as much of the sky...

Hopefully somebody more knowledgeable will chime in & provide some better advice!

Cheers
Ivor

 

That's really sound advice 

Thanks so much. 

Yes I am planning on moving to a larger lens, but wanted to get bit better at taking wide field shots. 

This flares hasn't happened on my previous images, so it might be my CLS filter...

 

[Kenboy]

5 hours ago, Aramcheck said:

I think it's lens flare, but as I don't have any camera lenses I can't advise on that (so far I've only taken prime focus pictures with the DLSR attached to a 'scope). I've read that it can be reduced by more careful processing, i.e. creating & applying a mask of the flare when stretching... It may be worth trying to take some images without the filter, to check that isn't the problem & also with different lens if you have one.

Colours are largely down to the the choices made in processing. You can alter the colour saturation, to help bring out the nebulous regions, but you'd benefit I think from a longer total exposure time. Here's a DLSR image of the same region but with 230mins total exposure:- https://britastro.org/observations/observation.php?id=20190204_195500_3b5f179fe8536100

M42 - Orion Nebula, is quite bright in comparison to the Barnard's Loop, so it'll be difficult to bring out the loop without blowing-out the core of M42... (You can always process the image twice & then combine them)

The amount of detail you can capture is down to the resolution of the equipment (focal length and camera pixel size) & sky conditions. The Canon 550d has a pixel size of 4.3 microns, so with a 50mm lens the resolution won't be better than 17.74 arcseconds/pixel. (See https://astronomy.tools/calculators/ccd) M42 is about 52 arcmins across (i.e 52 x 60 = 3120 arc seconds), so will only cover about 175 pixels on the camera. Longer focal length lens (or scope) will enable you to see more detail, but then you won't see as much of the sky...

Hopefully somebody more knowledgeable will chime in & provide some better advice!

Cheers
Ivor

 

 

Hey are you able to bring anything much out of this shot of Rosette I took? 

Again I think maybe my exposure time was not long enough. it's 1.5min shots x 20

Rosette 1.5 min.tif