Pixinsight Combination Methods: SHO vs Dynamic Narrowband Combinations
Night Sky Pics
[{'start': '0.160', 'end': '3.760', 'text': "Today we're going to be going over two"}, {'start': '1.680', 'end': '5.759', 'text': 'methods. The first one is the classic'}, {'start': '3.760', 'end': '9.080', 'text': 'show. The second one is the newer'}, {'start': '5.759', 'end': '12.279', 'text': 'dynamic narrowand'}, {'start': '9.080', 'end': '12.279', 'text': '[Music]'}, {'start': '14.280', 'end': '17.920', 'text': "combination. Everybody's familiar with"}, {'start': '16.320', 'end': '19.680', 'text': "the classic show palette. It's the"}, {'start': '17.920', 'end': '22.400', 'text': 'palette used for the Hubble telescope'}, {'start': '19.680', 'end': '25.119', 'text': 'which maps red to C, green to hot, and'}, {'start': '22.400', 'end': '27.560', 'text': 'blue to 03. The dynamic narrowband'}, {'start': '25.119', 'end': '29.840', 'text': 'combinations approach was created by an'}, {'start': '27.560', 'end': '32.239', 'text': 'astrophotographer who runs a blog on a'}, {'start': '29.840', 'end': '35.000', 'text': 'website called the coldest nights. It'}, {'start': '32.239', 'end': '37.600', 'text': 'was introduced in a post in'}, {'start': '35.000', 'end': '40.160', 'text': '2020. Dynamic narrowband combinations'}, {'start': '37.600', 'end': '42.559', 'text': 'use a complex pixel math formula that'}, {'start': '40.160', 'end': '45.920', 'text': 'mathematically measures the signal in'}, {'start': '42.559', 'end': '48.320', 'text': 'each master channel and outputs a proper'}, {'start': '45.920', 'end': '50.239', 'text': 'combination based on those signals.'}, {'start': '48.320', 'end': '53.600', 'text': 'Hence the word dynamic. Since the'}, {'start': '50.239', 'end': '55.440', 'text': 'combined photo is based on your on'}, {'start': '53.600', 'end': '57.760', 'text': 'Well, I guess a mathematical'}, {'start': '55.440', 'end': '61.440', 'text': 'interpretation of your signal in each'}, {'start': '57.760', 'end': '64.080', 'text': 'master file. That was complicated and'}, {'start': '61.440', 'end': '67.439', 'text': 'that that sounds complex, but it does'}, {'start': '64.080', 'end': '69.439', 'text': 'yield great results. Uh neither of these'}, {'start': '67.439', 'end': '70.360', 'text': 'techniques to me anyway is better than'}, {'start': '69.439', 'end': '73.680', 'text': 'the other'}, {'start': '70.360', 'end': '75.280', 'text': "one. And on my photos, I'd say about"}, {'start': '73.680', 'end': '77.600', 'text': 'half are done with the show technique'}, {'start': '75.280', 'end': '80.479', 'text': 'and half are done using the dynamic'}, {'start': '77.600', 'end': '82.880', 'text': 'narrow band combinations.'}, {'start': '80.479', 'end': '84.799', 'text': "But when I'm developing, it doesn't"}, {'start': '82.880', 'end': '86.560', 'text': 'really take that much time to try out'}, {'start': '84.799', 'end': '88.720', 'text': 'both of these. So, I usually try both'}, {'start': '86.560', 'end': '91.439', 'text': 'processes just to see which one gives me'}, {'start': '88.720', 'end': '93.520', 'text': "better results. So, today I'm going to"}, {'start': '91.439', 'end': '95.920', 'text': 'do just that with the Christmas tree'}, {'start': '93.520', 'end': '98.640', 'text': 'cluster and use both of these methods to'}, {'start': '95.920', 'end': '100.159', 'text': 'process it. I already know which one I'}, {'start': '98.640', 'end': '101.920', 'text': "like better, and I'll share that at the"}, {'start': '100.159', 'end': '104.079', 'text': "end of this video, but I'd love to hear"}, {'start': '101.920', 'end': '105.680', 'text': 'your opinion as well.'}, {'start': '104.079', 'end': '108.320', 'text': 'All my master files are already'}, {'start': '105.680', 'end': '110.880', 'text': 'stretched and all we will be doing is'}, {'start': '108.320', 'end': '114.000', 'text': 'combining the narrow band files and then'}, {'start': '110.880', 'end': '116.000', 'text': 'doing a few small tech um tweaks to'}, {'start': '114.000', 'end': '118.640', 'text': "bring out the photo. So, let's get"}, {'start': '116.000', 'end': '120.479', 'text': 'going. So, I have everything as I'}, {'start': '118.640', 'end': '122.719', 'text': 'mentioned before right over here. What'}, {'start': '120.479', 'end': '124.159', 'text': "I'm going to do is open up channel"}, {'start': '122.719', 'end': '126.399', 'text': "combination first. I'm going to go to"}, {'start': '124.159', 'end': '128.920', 'text': 'process and let me just move this mic a'}, {'start': '126.399', 'end': '132.000', 'text': "little bit there. I'm going to go to"}, {'start': '128.920', 'end': '133.840', 'text': 'process color spaces channel'}, {'start': '132.000', 'end': '139.080', 'text': 'combination.'}, {'start': '133.840', 'end': '141.720', 'text': 'And from here I am going to map red to'}, {'start': '139.080', 'end': '147.200', 'text': 'C, green to'}, {'start': '141.720', 'end': '148.920', 'text': "ha, and 03 to blue. And let's just see."}, {'start': '147.200', 'end': '150.440', 'text': 'Made an'}, {'start': '148.920', 'end': '154.640', 'text': 'error.'}, {'start': '150.440', 'end': '158.720', 'text': 'Okay, there we go. And now you can see'}, {'start': '154.640', 'end': '160.920', 'text': 'we have our classic show problem. And'}, {'start': '158.720', 'end': '164.400', 'text': 'this problem is is that the photo turns'}, {'start': '160.920', 'end': '167.280', 'text': "out green. And that's mainly because you"}, {'start': '164.400', 'end': '170.160', 'text': 'are mapping your ha to green. Ha is the'}, {'start': '167.280', 'end': '171.680', 'text': 'largest signal in the show palette. So'}, {'start': '170.160', 'end': '173.360', 'text': "when you're doing that, it it's"}, {'start': '171.680', 'end': '175.680', 'text': 'definitely going to turn out green if'}, {'start': '173.360', 'end': '178.480', 'text': "you uh when you do this. It's very"}, {'start': '175.680', 'end': '179.560', 'text': "simple. So what I'm going to do now is I"}, {'start': '178.480', 'end': '183.200', 'text': 'am going'}, {'start': '179.560', 'end': '187.640', 'text': 'to use a formula from James Lamb called'}, {'start': '183.200', 'end': '191.200', 'text': 'modified SCNR. And this formula'}, {'start': '187.640', 'end': '192.800', 'text': 'basically like SCNR takes out the green'}, {'start': '191.200', 'end': '195.920', 'text': "in the photo. So I'm just going to add"}, {'start': '192.800', 'end': '197.920', 'text': 'this right here. Um the only advantage'}, {'start': '195.920', 'end': '199.200', 'text': 'to using this over SCNR, well I'}, {'start': '197.920', 'end': '201.599', 'text': "shouldn't say the only advantage, it's a"}, {'start': '199.200', 'end': '204.159', 'text': 'huge advantage to using this over SCNR'}, {'start': '201.599', 'end': '206.560', 'text': 'is that your photo is not going to lose'}, {'start': '204.159', 'end': '208.840', 'text': 'as much signal. So I prefer using this'}, {'start': '206.560', 'end': '212.000', 'text': 'because I just think it works a lot'}, {'start': '208.840', 'end': '213.360', 'text': "better. So uh all right, we're just"}, {'start': '212.000', 'end': '215.599', 'text': 'going to wait for this to finish and it'}, {'start': '213.360', 'end': '217.200', 'text': "shouldn't take that long. Okay. So, now"}, {'start': '215.599', 'end': '219.120', 'text': "that we finished that, what I'm going to"}, {'start': '217.200', 'end': '220.239', 'text': 'do is actually invert this. And the'}, {'start': '219.120', 'end': '222.080', 'text': "reason I'm going to invert this right"}, {'start': '220.239', 'end': '225.519', 'text': 'here is because you see some magenta'}, {'start': '222.080', 'end': '228.080', 'text': 'here in the corner. And the opposite of'}, {'start': '225.519', 'end': '230.000', 'text': "magenta is actually green. It's green."}, {'start': '228.080', 'end': '231.440', 'text': 'So, you want to get rid of the magenta,'}, {'start': '230.000', 'end': '232.720', 'text': "too. So, I'm going to invert this. And"}, {'start': '231.440', 'end': '235.200', 'text': 'you could probably see little green'}, {'start': '232.720', 'end': '238.080', 'text': "patches here. And let's do this. And"}, {'start': '235.200', 'end': '238.080', 'text': "we'll be back on this"}, {'start': '239.400', 'end': '247.040', 'text': 'one. Okay, that is finished now. And'}, {'start': '243.760', 'end': '248.959', 'text': "let's just bring the invert back. And"}, {'start': '247.040', 'end': '251.040', 'text': "there we go. It's looking pretty good so"}, {'start': '248.959', 'end': '254.159', 'text': 'far. So now I want to do the dynamic'}, {'start': '251.040', 'end': '255.840', 'text': 'narrowand combination to uh compare'}, {'start': '254.159', 'end': '258.239', 'text': 'this. And here I have I just have the'}, {'start': '255.840', 'end': '260.160', 'text': 'formula right here or this is it. This'}, {'start': '258.239', 'end': '261.919', 'text': 'is the dynamic narrowand combinations.'}, {'start': '260.160', 'end': '265.199', 'text': 'As you can see see each of the signals'}, {'start': '261.919', 'end': '267.280', 'text': 'is uh or master files is uh represented'}, {'start': '265.199', 'end': '269.120', 'text': 'here under the red channel. And then you'}, {'start': '267.280', 'end': '270.960', 'text': 'got another more complex formula here'}, {'start': '269.120', 'end': '274.080', 'text': 'under the green channel. And then the'}, {'start': '270.960', 'end': '276.759', 'text': 'blue is just simply 03. But you can see'}, {'start': '274.080', 'end': '279.120', 'text': "how this works out because it's kind of"}, {'start': '276.759', 'end': '282.720', 'text': 'mathematically, you know, using the'}, {'start': '279.120', 'end': '285.680', 'text': 'actual master files to uh put together'}, {'start': '282.720', 'end': '287.360', 'text': 'what red, green, and blue should be. So'}, {'start': '285.680', 'end': '290.960', 'text': "I'm going to click this. Oh, got it"}, {'start': '287.360', 'end': '290.960', 'text': 'wrong again. And there we'}, {'start': '291.080', 'end': '295.759', 'text': 'go. This takes a second. This is so'}, {'start': '293.759', 'end': '298.160', 'text': 'fast. Okay. So that is the result of the'}, {'start': '295.759', 'end': '300.600', 'text': "dynamic narrowand combinations. It's"}, {'start': '298.160', 'end': '304.080', 'text': 'this one right over here.'}, {'start': '300.600', 'end': '306.240', 'text': 'And I think it looks pretty good. I like'}, {'start': '304.080', 'end': '307.759', 'text': "it, you know. I mean, it's a lot red"}, {'start': '306.240', 'end': '310.160', 'text': 'more red than this. You could tell how'}, {'start': '307.759', 'end': '311.840', 'text': 'dramatically different these two are.'}, {'start': '310.160', 'end': '313.759', 'text': "So, the next thing I'm going to do is"}, {'start': '311.840', 'end': '316.160', 'text': "I'm going to add a luminance layer. And"}, {'start': '313.759', 'end': '317.919', 'text': "what I'm going to do is just add in my"}, {'start': '316.160', 'end': '319.280', 'text': 'HA as the luminance layer. This is a'}, {'start': '317.919', 'end': '321.440', 'text': 'common technique when people are doing'}, {'start': '319.280', 'end': '322.800', 'text': 'narrow narrow band. They use their ha as'}, {'start': '321.440', 'end': '325.759', 'text': "the luminance layer. So, what I'm going"}, {'start': '322.800', 'end': '328.639', 'text': 'to do is I have LRGB combination open. I'}, {'start': '325.759', 'end': '330.160', 'text': 'checked off L. I unchecked RG and B. I'}, {'start': '328.639', 'end': '332.160', 'text': 'checked off chromminance noise'}, {'start': '330.160', 'end': '334.880', 'text': "reduction. And what I'm going to do is"}, {'start': '332.160', 'end': '337.680', 'text': 'just load my HA file right into here.'}, {'start': '334.880', 'end': '340.960', 'text': "And then I'm going to drag it onto here."}, {'start': '337.680', 'end': '344.240', 'text': "And this takes a minute. So we'll be"}, {'start': '340.960', 'end': '344.240', 'text': "back or we'll speed this"}, {'start': '347.639', 'end': '354.320', 'text': 'up. Okay. So that is finished. And right'}, {'start': '350.400', 'end': '357.840', 'text': 'now you could see what a difference this'}, {'start': '354.320', 'end': '360.560', 'text': "really makes. So let's go back here."}, {'start': '357.840', 'end': '363.039', 'text': "Let's go forward. And yeah, and the"}, {'start': '360.560', 'end': '364.400', 'text': 'luminance layer definitely makes a'}, {'start': '363.039', 'end': '366.720', 'text': "difference. So, I'm going to do the same"}, {'start': '364.400', 'end': '370.800', 'text': 'thing and apply it to the dynamic narrow'}, {'start': '366.720', 'end': '370.800', 'text': "band combination one. And we'll be"}, {'start': '375.479', 'end': '380.560', 'text': 'back. Okay, that is done. And now you'}, {'start': '378.240', 'end': '382.160', 'text': "could see I'm going to close this. What"}, {'start': '380.560', 'end': '384.319', 'text': "a difference it made on this one. Let's"}, {'start': '382.160', 'end': '386.479', 'text': 'just go back.'}, {'start': '384.319', 'end': '389.240', 'text': 'Wow, look at the signal difference'}, {'start': '386.479', 'end': '392.880', 'text': "between these two. It's It's absolutely"}, {'start': '389.240', 'end': '395.479', 'text': "amazing. Uh so if you don't do that, I"}, {'start': '392.880', 'end': '398.880', 'text': 'strongly recommend you'}, {'start': '395.479', 'end': '401.360', 'text': 'do. And right now, I think as the next'}, {'start': '398.880', 'end': '403.600', 'text': "step, we're just going to add some"}, {'start': '401.360', 'end': '406.000', 'text': 'intensity transformation, some contrast'}, {'start': '403.600', 'end': '407.759', 'text': "and whatnot to these photos. I'm going"}, {'start': '406.000', 'end': '410.639', 'text': 'to start with the show image first on'}, {'start': '407.759', 'end': '412.720', 'text': "the left. And I'm just going to add a"}, {'start': '410.639', 'end': '416.000', 'text': "little bit of contrast. And we're just"}, {'start': '412.720', 'end': '418.560', 'text': 'going to do some small tweaks here. Oh'}, {'start': '416.000', 'end': '422.720', 'text': 'yeah, look at that. That looks amazing.'}, {'start': '418.560', 'end': '426.639', 'text': 'I love it. I love this this show. Uh I'}, {'start': '422.720', 'end': '428.880', 'text': "mean this show this uh 03 signal that's"}, {'start': '426.639', 'end': '431.840', 'text': "coming out right here. So next I'm just"}, {'start': '428.880', 'end': '433.919', 'text': 'going to add some saturation in here.'}, {'start': '431.840', 'end': '436.319', 'text': "And that's a lot of saturation. It needs"}, {'start': '433.919', 'end': '436.319', 'text': 'a lot of'}, {'start': '437.319', 'end': '442.160', 'text': "saturation. There we go. Let's just take"}, {'start': '440.319', 'end': '444.599', 'text': "down that. Let's just add a little bit"}, {'start': '442.160', 'end': '446.200', 'text': 'more. Not too much'}, {'start': '444.599', 'end': '447.880', 'text': 'more.'}, {'start': '446.200', 'end': '450.520', 'text': '[Music]'}, {'start': '447.880', 'end': '453.919', 'text': 'And there we'}, {'start': '450.520', 'end': '455.680', 'text': "go. All right. Let's do the same thing."}, {'start': '453.919', 'end': '459.280', 'text': "I think that looks pretty good. Let's do"}, {'start': '455.680', 'end': '461.440', 'text': 'the same thing over here. Um, so what'}, {'start': '459.280', 'end': '463.479', 'text': "I'm going to do is just reset this. I'm"}, {'start': '461.440', 'end': '465.919', 'text': 'going to go back to my'}, {'start': '463.479', 'end': '469.199', 'text': 'RGBK. And let me close this. It looks'}, {'start': '465.919', 'end': '472.199', 'text': 'like I opened up that one mistakenly.'}, {'start': '469.199', 'end': '475.879', 'text': "And let's hit preview over"}, {'start': '472.199', 'end': '480.879', 'text': 'here. And'}, {'start': '475.879', 'end': '480.879', 'text': 'oh, look who it is. Come here.'}, {'start': '481.479', 'end': '487.599', 'text': 'You my little cat. He just dropped'}, {'start': '484.840', 'end': '491.319', 'text': 'in. What are you doing? Huh? What are'}, {'start': '487.599', 'end': '493.000', 'text': "you doing? You're interrupting one of my"}, {'start': '491.319', 'end': '495.680', 'text': 'videos. All'}, {'start': '493.000', 'end': '498.720', 'text': "right. Sorry about that. He just he's"}, {'start': '495.680', 'end': '500.400', 'text': 'sleeping in here and he likes to uh I'}, {'start': '498.720', 'end': '502.800', 'text': "don't know just come along. So, where"}, {'start': '500.400', 'end': '506.120', 'text': 'were we? We were going to do some'}, {'start': '502.800', 'end': '508.800', 'text': 'contrast enhancements on'}, {'start': '506.120', 'end': '510.280', 'text': 'here. And let me just move this out of'}, {'start': '508.800', 'end': '515.680', 'text': 'the'}, {'start': '510.280', 'end': '515.680', 'text': 'way. And I think this looks pretty'}, {'start': '516.519', 'end': '520.599', 'text': 'good. All right.'}, {'start': '524.080', 'end': '527.839', 'text': 'And then we were going to do some'}, {'start': '528.839', 'end': '533.480', 'text': 'saturation. All right. O, that might be'}, {'start': '532.480', 'end': '536.760', 'text': 'too'}, {'start': '533.480', 'end': '540.920', 'text': 'much. That might be too'}, {'start': '536.760', 'end': '544.160', 'text': 'much. Okay, there we'}, {'start': '540.920', 'end': '546.640', 'text': 'go. Let me reset this. So, I think'}, {'start': '544.160', 'end': '549.680', 'text': "that's all that we're going to do today."}, {'start': '546.640', 'end': '552.480', 'text': 'So, if you look at these two photos, you'}, {'start': '549.680', 'end': '555.760', 'text': 'could seriously see how different they'}, {'start': '552.480', 'end': '558.640', 'text': 'really are and what the kind of results'}, {'start': '555.760', 'end': '560.399', 'text': "each of these yields. It's It's just"}, {'start': '558.640', 'end': '563.839', 'text': "different. And that's why I try both of"}, {'start': '560.399', 'end': '565.920', 'text': "them out when I'm doing a photo because,"}, {'start': '563.839', 'end': '568.240', 'text': 'you know, either of them could work. In'}, {'start': '565.920', 'end': '569.760', 'text': 'this case, I think the show method works'}, {'start': '568.240', 'end': '571.680', 'text': 'for the Christmas tree cluster only'}, {'start': '569.760', 'end': '573.519', 'text': 'because I really, really, really like'}, {'start': '571.680', 'end': '575.760', 'text': 'the 03 here coming out a little bit'}, {'start': '573.519', 'end': '578.080', 'text': "more. I'm sure I could work this one a"}, {'start': '575.760', 'end': '579.480', 'text': 'little bit more to get get the 03 out a'}, {'start': '578.080', 'end': '581.839', 'text': 'little bit here, but'}, {'start': '579.480', 'end': '583.920', 'text': "it's I'm not I don't want to work. I'm"}, {'start': '581.839', 'end': '585.839', 'text': "lazy, you know? I don't want to do that."}, {'start': '583.920', 'end': '588.320', 'text': 'So, I I just want to take the method'}, {'start': '585.839', 'end': '591.160', 'text': 'that I feel looks the best right from'}, {'start': '588.320', 'end': '594.000', 'text': "the start and go with it. And that's it."}, {'start': '591.160', 'end': '596.560', 'text': 'So, let me know down in the comments'}, {'start': '594.000', 'end': '599.600', 'text': 'which one you think works better. I told'}, {'start': '596.560', 'end': '602.080', 'text': "you what I think. I love the show. I'd"}, {'start': '599.600', 'end': '604.480', 'text': 'like to hear from you, too. Thanks. Talk'}, {'start': '602.080', 'end': '604.480', 'text': 'to you soon.'}]