beamer3.6m

I previously purchased the Samyang 135mm (Canon mount) and I used it once and it worked well...

Unfortunately however, due to a multitude of reasons, I need to move this lens along... it is effectively brand new, fully boxed and comes with the lens pouch/bag and also a 3d printed bhatinov mask which I made.

I'm hoping to get back what I paid out as I need to recoup this ideally do I'm looking for offers around the £350 mark... its currently around £440 on Amazon...

Please pm if interested. I will put it in the for sale section shortly but thought best to post here amongst the specific users.

I know that the Photoshop apps for Android and Apple are limited paired down versions of the full software albeit Lightroom seems to be half decent, at least to my eyes.

So does anyone process their images on a tablet, and if so which one and what software works well.

I know the iPad is the market leader and a laptop can be had for less but the convenience of a tablet just fits my needs better.

Thank you

I dont see this Gallery HTH option... can you post a screen print of it??

I see 'gallery' but this shows everyones pics... how do we just find our own quickly

Is the usuable space full?

16 hours ago, raadoo said:

Here's a step by step that will hopefully this will clear things up:

1. Split your stars and background into two images
2. Use Photoshop's File > Scripts > Load Files Into Stack script to load the two images
3. Once you hit OK in the script dialog you should have the two images loaded as individual layers
4. Make sure the image of the stars is the layer above the background
5. Change the stars layer blending mode to Screen

I've attached a few screenshots of what these look like.

Brilliant, I will try this...

15 hours ago, woldsman said:

The basic idea is to create a starless image - which you have done using Starnet++. You then load the starless image and the original image as layers. Next you subtract the top image (which should be the starless image) from the bottom one . Now you have a stars only image. Finally, you load the starless image and the stars only image. You add the top image to the bottom one.

You can use Gimp for the above processes. Load the images as layers. After subtracting or adding, go to the images tab and click “merge visible layers” then export the merged image.  
 

Images should be aligned for subtraction or addition. You may want to work separately on an image that is going to result in a starless nebula and also an image that is going to result in stars only. In this case, align at the stacking stage and make sure any crops are the same dimensions. 
 

Your M45 looks good btw!

 

This is all a bit complicated to take in... how do you subtract one image from another for example...

It's SO complicated a photoshop is not intuitive at all.

I had a play and managed to produce a 'more natural' look I think...

I use Photoshop CS2 because I have it and I dont want to pay for the monthly CC versions.

I often see reference to processing an image without stars so I use Starnett++ to remove them. My question is, once I have processed the images (one with stars and one without) how do I merge/blend (or whatever you call it) back together.

Ive searched Google and watched tutorials but it just is not going in. I dont understand layers or how to work on them or set them up or anything really.

I NEED AN IDIOTS GUIDE. Can anyone help me in simple 1, 2, 3 like steps??

This is the best I can get with my processing skills. I just do not understand photoshop at all... 

Compared to my initial processing attempt:

Thank you... I will check out your vid

Can you clarify what you mean by stretched and unstretched images as I'm confused.

I stack in siril... do some simple processing and deal with the histogram then save it... do I remove the stars then in starnett++??

Then process the removed stars image in photoshop...

I'm confused

9 minutes ago, assouptro said:

Very nice! 
So many stars!! 
 

Thanks for sharing 

Bryan 

Thank you... I was surprised bh the number of stars...

I was hoping to bring out more nebulosity in the main star field but I struggle at that point.

The Plaides from Bortle 4 skies in Yorkshire.

30 x 180s lights

30 x flats

60 x bias

Unmodded 1100d

AZ-GTI (EQ and tracked)

Samyang 135

Stacked in Siril and processed in Lightroom.

Not brilliant but getting better

The Plaides from Bortle 4 skies in Yorkshire.

30 x 180s lights

30 x flats

60 x bias

Unmodded 1100d

AZ-GTI (EQ and tracked)

Samyang 135

Stacked in Siril and processed in Lightroom.

Not brilliant but getting better

The Veil (with some processing help from the forums)

55 x 180s

30 flats

60 biases

Unmodded 1100d

AZ-GTI mount (eq/guided)

13 minutes ago, Budgie1 said:

I had a go at the file using PixInsight and came up with this.

You can just see Pickering's Triangle starting to show and there is a tiny bit of Ha in there. I did have to go OTT with the Curves to bring it out but with more data it should get better.

 

That looks very good to my eyes.

Thank you, I appreciate the effort.

I always think that part of the trouble with processing is that, until you get enough experience under your belt, you just don't know what can be achieved from any given image so you never know when to stop or if going any further will just do nothing, or worse take the image backwards.

I appreciate the effort...

I tried using starnett++ (or whatever it is called) so I could try and just bring out the nebula but I got lost with how to then put the stars back into the image in photoshop.

I really need to learn some processing skills!!!!!!!

3 minutes ago, Elp said:

Your veil result seems okay, shooting at f2.8 will capture a lot of stars. As people have said because the camera is standard you may struggle to capture the nebulosity of the veil. Try imaging something bright next time like Orion, Pleiades or Andromeda, you should get a decent result.

Thank you.

It certainly captured a lot of stars!!! I was surprised just how many

3 minutes ago, Budgie1 said:

The standard DSLR is fitted with a filter which blocks most of the Ha signal you're trying to capture on this target. You're getting some of the OIII signal through but the only real way to resolve it is a camera without the offending filter.

Your normal DSLR is okay for reflection or dark nebula regions and galaxies but with SY135 you'll get so much more with an astro modified or full spectrum camera and it will allow you to use a Duel-Band filter to highlight even more Ha & OIII signal.

Who said this hobby was cheap or easy? 🤣

 

Agreed.

I'm on the lookout for an asi533 colour camera. Hopefully one will pop up in the for sale sectiob

A cropped view to try and concentrate on the veil itself.

So I have had a play, which is not saying much as I am inherently useless as this part of the process!

A little overdone perhaps

That's a fair point...

Is there anyway that this can be resolved... save for a dedicatedbastro camera?

Would any filters help on an unmodded camera or do I need to mod the dslr??

Managed to image with it and the result seemed OK after flats/bias frames... or at least to my eyes?

It is defo the canon version of the lens.

I once again call for help (like Gotham calling for Batman) with the processing of this image.

It is the veil nebula taken with my new Samyang 135 (first light with the lens) with my unmodded 1100d

180s lights x 55

30 flats

60 Biases

Initial process in Siril attached as a Tiff.

Veil 2.tif

My processing is attached here:

3 minutes ago, Elp said:

The table on the side of the box will have all the info. It should have come with a lens hood.

Not sure what I'm supposed to be looking for but it did have a lens hood and this is the box info??