Utah Desert Remote Observatories

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@hael8680 Күн бұрын

Do you remember the focal length of the lens/scope you used?

@utahdesertremoteobservator8328 Күн бұрын

This was with a Takahashi FSQ106 530mm focal length and a full-frame camera

@kevinivey8422 2 күн бұрын

I am so appreciative of your work and you teach so well. I have no questions yet because of all the information that you included in this video. It is going to take a while to digest. I think what I’m going to do is process my data a second time following these steps exactly. then I am sure I will have a few questions. The first time I processed my data, I split the color image into individual RGB channels and processed it like a narrow band image so that I could follow along with what you were doing. The results turned out very well I think and I was wondering if I’d be able to share my results with you?

@utahdesertremoteobservator8328 Күн бұрын

Splitting the RGB channels can be useful, especially if your system exhibits large amounts of chromatic aberrations. However, I would still combine them in PixInsight in order to take advantage of SPCC color calibration.

@kevinivey8422 Күн бұрын

I split the channels after I have done all the basic processing in Pixinsight with the little button at the top of the toolbar on the left-hand side.

@kevinivey8422 Күн бұрын

And after I have removed the stars.

@utahdesertremoteobservator8328 Күн бұрын

@@kevinivey8422 I don't think there's much value in splitting the RGB channels after WBPP. There is an option in WBPP to split and process the channels individually. The benefit there is that each channel is registered uniquely (before integration) which can correct for chromatic aberration. If you split the channels after the integration you don't get that benefit and probably just make processing more complex than it needs to be. SPCC is a big benefit, and In order to use it you need the RGB channels combined with stars still present.

@kevinivey8422 2 күн бұрын

I just started watching it, but thank you, i’m excited to learn something new today that I can apply to my workflow. I’ll save my questions for afterwards.

@sticksnowandyo 4 күн бұрын

Great Video Craig...As always. Quick question, could you not simply copy the first (Burn & Dodge) adjustment layer from the Sulfur to the Hydrogen? Those reflections are still in the same location of the image I assume.

@utahdesertremoteobservator8328 4 күн бұрын

That's a good idea. I did try that initially and even though the reflections look similar, they are different enough that it was easier to just start from scratch.

@georgiberle1227 6 күн бұрын

thanks a lot Craig!

@jtepsr 6 күн бұрын

Craig, you are a hard act to follow in photoshop. i love your final image. that hydrogen showing on the edge is beautiful.

@RigoFromSpain 7 күн бұрын

Very interesting, thanks Craig.

@RigoFromSpain 7 күн бұрын

Craig, Thank you very much for responding to my question, if I could I would buy you a coffee, many greetings from southern Spain!

@Nico.75 7 күн бұрын

Wow, that was exactly was I needed and asked for yesterday and whoop there's a video, thank you so much!! Great tip using that black layer in divide mode!

@markpetersen2130 7 күн бұрын

Great stuff. I recently helped a friend process two images shot from two side-by-side telescopes with different cameras. One thing that can be an issue in this instance is there are usually aberrations at the edges that can cause registration errors with two scopes. WBPP has a checkbox in the registration settings called distortion correction. This solved my friends issue and the images registered fine. Another issue is I think both cameras need to have the same bin setting. My friend was using bin1 on one and bin2 on the other and WBPP wouldn't integrate the two images together and kept them separated by bin in the output/master folder.

@utahdesertremoteobservator8328 6 күн бұрын

Thanks, those are a couple good tips.

@kevinivey8422 7 күн бұрын

I would definitely love to see more. 0SC processing tutorials. I am using a Antlia Tri-Band filter And a Optolong UVR cut filter that I’m assuming you were calling luminance. I have followed your instruction using the target NGC 7000 using a 533mc camera. I now have 14 hours collected in total. I know it’s not a lot but here in Ohio we have a lot of cloudy days. I cannot believe that you only have four comments so far.

@utahdesertremoteobservator8328 7 күн бұрын

I use a clear glass filter that I refer to as luminance. Since it’s in a filter wheel with the L-eNhance I have to have some kind of filter for focusing; the difference between a filter and no filter is too much of a difference for the autofocus to handle.

@samwarfelphotos 7 күн бұрын

I’m curious what in the world that fellow was doing with a million images…

@utahdesertremoteobservator8328 7 күн бұрын

snapshotsofthepast.com/

@jtepsr 7 күн бұрын

hi craig, on a mac, so if i did cntrl a, cntrl c, switch to other image and did cntrl V, it does not copy layer. what did i do wrong.

@Nico.75 7 күн бұрын

That's really an awesome workflow!! As a color blind and in order to avoid any background color bias which is difficult for me to identify, would it be an option to clip the blacks on all nb layers slightly and add "your" solid rgb(19,19,19) layer on top in lighten mode as long as you don't clip faint emission nebula signal?

@utahdesertremoteobservator8328 7 күн бұрын

You can, but perhaps a better option would be to set a sample point at the darkest point and then adjust the brightness of each layer so that that point is around 19,19,19 to neutralize the background.

@Nico.75 7 күн бұрын

I tried that before as seen on your older videos but the results were quite different depending on the chosen sample point. So one really should find the absolute darkest background area to neutralize it successfully (?)

@utahdesertremoteobservator8328 7 күн бұрын

@@Nico.75 Yes. I'm going to do a video to show how to do that

@gomanastro 7 күн бұрын

Great idea using the actions to speed things up on the set up!

@RigoFromSpain 7 күн бұрын

Craig is it possible how to make a video of Macro recording ? Thx

@RigoFromSpain 7 күн бұрын

Thanks Craig as always

@carlosfranco5978 7 күн бұрын

Thanks a lot for your video. Great and very interesting. How can I get your photoshop action???

@qx3V45p 8 күн бұрын

I've learned a ton over the past year or so from your videos. Always great stuff. Thank you!

@indysbike3014 8 күн бұрын

I saw that video too. Your method is easier and better in my opinion.

@MatthewHolevinski 8 күн бұрын

What implications are there regarding moving the data into the RGB documents channels instead of layers?

@utahdesertremoteobservator8328 8 күн бұрын

Moving the individual layers into channels tends to be destructive and much less flexible. For instance if you decide you want yhe Ha to be slightly more cyan than pure green it becomes much more complicated with channels. With this technique you simply move the hue slider on the Ha hue adjustment layer.

@MatthewHolevinski 8 күн бұрын

@@utahdesertremoteobservator8328 would that be an option if only doing RGB? I haven't been acquainted with Photoshop in about 30 years, I figured you could still apply adjustment layers with the data being in the channels.

@utahdesertremoteobservator8328 8 күн бұрын

@@MatthewHolevinski Maybe I'm not understanding your question. The data ultimately is always in "channels" but we generally don't work directly with the channels. We use layers and adjustment layers which ultimately affect the way the channels are mixed and displayed, but that's all happening in the background.

@MatthewHolevinski 8 күн бұрын

@@utahdesertremoteobservator8328 gotcha, thank you :)

@SassePhoto 8 күн бұрын

Love the action button, it makes Narrowband so easy and we can focus on creativity, adjusting sliders to taste

@yvangarcia3535 11 күн бұрын

Hi, can you put a link to see where to download that Photoshop and its price ? Is it the standard Photoshop or would we need to download Photoshop + some extras like Pixinsight ? Pisi is quite expensive. Thanks. Yvan

@utahdesertremoteobservator8328 11 күн бұрын

For Photoshop, check www.adobe.com/creativecloud/photography/pricing-info.html or Google "adobe photoshop photography plan" It should be around $10 a month and includes Lightroom. I also use PixInsight along with the RC-Astro plugins BlurXTerminator, NoiseXTerminator and StarXTerminator.

@roseschmedding5705 12 күн бұрын

Very useful thanks so much

@Nico.75 12 күн бұрын

Thank your for your updated workflow regarding nb color mapping, very helpful! If you only have Ha and Oiii, do you have to copy the Oiii layer and colorize one Oiii layer with hue 120 and the copied Oiii layer with hue 240?

@utahdesertremoteobservator8328 12 күн бұрын

For HOO you wou color Ha red and Oiii cyan (hue 180) as a starting point, but may find shifting the Oiii hue higher or lower is more pleasing.

@hael8680 13 күн бұрын

Thank you! Great video! That's a lot of reflection!!

@georgiberle1227 14 күн бұрын

thanks a lot Craig for showing us this powerful workflow!! Best regards George

@glennvonk 15 күн бұрын

Best method I've tried - thanks!

@gregpierens1882 15 күн бұрын

Thanks Craig, would you be able to attach the actions. I have tried several time to program it without problems. Cheers!

@utahdesertremoteobservator8328 15 күн бұрын

As far as I know, KZbin doesn't support attaching download files.

@grigoryvidishev1810 15 күн бұрын

Thank you Craig for another great video! I see that you are not assigning colors through switching off certain channels and adding curves, like you switched off red in Oxygen like in Natural SHO workflow. Are these workflows generally produce the same images? I adopted your processing techniques and I am watching all your videos and I am trying to put all these workflows in my head in order seeing the nuances. Many thanks for all these tricks.

@utahdesertremoteobservator8328 15 күн бұрын

I still use both techniques, but the Hue/Saturation method is easier to teach since it's universal and you can use the same structure for each filter group. I eventually convinced myself that you can produce the same result either way.

@Calzune 15 күн бұрын

Thank you for sharing all your tips and tricks! These videos are golden and I always come back and rewatch them when I need ideas and help.

@RigoFromSpain 15 күн бұрын

So wonderful explained, finally i am getting somewhere in PS Many THANKS Craig 👍

@josephburian8716 16 күн бұрын

I can see I'll be watching this several times, but one thing I miss the first time through. You set the Ha Hue to 120, then set the Oxygen to 240, at this point you talked about making actions (great idea) but I missed the Hue setting for the Sulfur.

@utahdesertremoteobservator8328 16 күн бұрын

The hue setting for sulfur is zero, which is red. In this image I adjusted Ha and Oiii (green and blue) to be more red to get a more pleasing, less green image, but I didn't change Sii since it was already red.

@RigoFromSpain 17 күн бұрын

Great video for Pix and PS Love it Thx Craig and PLEASE do them regularly ! Greetings from a retired Belgian from South of Spain

@RigoFromSpain 17 күн бұрын

I love these explanations in PS Thx Craig

@qx3V45p 22 күн бұрын

Very useful and NOT confusing. Every video you post is a treasure of great info. Amazing stuff.

@greatpix 22 күн бұрын

When using a brush you want to make sure to feather the edge.

@utahdesertremoteobservator8328 21 күн бұрын

When painting with a brush, yes. The Remove tool uses a hard edge since it creates its own transition.

@NeilCorke 22 күн бұрын

Thank you Craig. This is just what I am looking for my current working image!

@jtepsr 22 күн бұрын

Craig, as always great processing

@grigoryvidishev1810 22 күн бұрын

Thank you Craig yet another great video! Currently I am in the process of assembling a rig with two scopes CDK14" and Esprit 100ED, so focal lengths are 2563mm and 550mm. Essentially I will have two images with those FL, do you think the method you propose in this video could be a good one to combine results of such two scopes?

@utahdesertremoteobservator8328 22 күн бұрын

The technique will work, but with that much difference in focal length it may not be very useful.

@AmyAstro 22 күн бұрын

Excellent video. Thank you for creating this.🤩

@jameschase9002 24 күн бұрын

Great video Craig. Thanks for sharing! If you don't mind my asking... Which scope/camera combination did you use to capture the sub exposures?

@rodneymiller9439 26 күн бұрын

Question. How do you insure that everything aligns properly, especially if your narrowband and rgb sessions are a month apart? Is this accomplished during the stacking process, perhaps? Or is it best to align in post with photoshop?

@utahdesertremoteobservator8328 26 күн бұрын

Normally all of the light frames are processed together in the same WBPP run so they are all alignred to the same frame. If you want to process a set of lights separately you can choose Manual as the reference frame selection process and specify the same frame that was used in an earlier run. You can find the reference frame chosen in the log file.

@rodneymiller9439 26 күн бұрын

@utahdesertremoteobservator8328 Unfortunately I used Sirilic to stack my narrowband data and it appears as though it doesn't use a reference frame during its processing. I'll do more research, but I might end up just eyeballing it in photoshop.

@utahdesertremoteobservator8328 26 күн бұрын

@@rodneymiller9439 I'm sure it uses a reference frame for registration, but the frame it selected may not be readily available. You can align frames in Photoshop. Sometimes Auto Align works, but it's also easy to manually align them using either Lighten or Difference blending modes.

@riverrat2944 29 күн бұрын

This video was perfect timing. I recently went mono and was having problems with blending mode. Thank you for the simple and awesome video. Clear skies

@Zealor365 Ай бұрын

Wow, I've been using Photoshop for 25 years and this taught me something new. Brilliant video!

@grigoryvidishev1810 Ай бұрын

Thank you Craig for another good video. You mentioned in prior videos that this approach is used by NASA. Question- how you make letters displaying colors of the particular layers? You did not use letter adjustment layers like you did in prior videos. Possibly I missed it. Thank you.

@CraigStocksArts Ай бұрын

In this example I had already added the text to each image so it simply takes on the color of the layer. You can also add a text layer witheach layer group and it will take on the color of the group.

@kevinivey8422 Ай бұрын

I noticed that you color mapped using the hue and saturation on this particular image, but on other past videos, you would left click and select red green blue. What is the difference between the two and when would you apply one versus the other? Does it have anything to do with one image being RGB and another image being grayscale? And I have never understood how a grayscale image can be RGB. I don’t know if I’m making any sense. I have tried finding the answer to these few questions within your videos and I don’t think I have an answer to these questions

@CraigStocksArts Ай бұрын

Both techniques work and can produce the same result. I’ve started demonstrating this approach as a universal technique that can be easier to understand.

@indysbike3014 Ай бұрын

A grayscale image can be seen as an RGB image with the same RGB values. For example 120,120,120 has equal rgb values but looks grayscale. So 0,0,0 is black and 255,255,255 is white. Everything in between is gray. In PS under Image-->Mode you can change a grayscale image into RGB. It will look the same but now you got 3 channels RGB with the same value.

@NeilCorke Ай бұрын

Thank you, Craig. An excellent tutorial as always!

@gomanastro Ай бұрын

great example, thanks

@hael8680 Ай бұрын

Very useful and well done! What are the keyboard keys you are using here 9:43

@utahdesertremoteobservator8328 Ай бұрын

The W key to select the Polygonal Lasso tool (but you might have to select it from the toolbar), the mouse and mouse buttons to select the corners of the selection with the Polygonal Lasso, and the Delete key to delete the selected region.

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