Bunglesastroimaging Posted September 6, 2021 Share Posted September 6, 2021 Busy part of the night sky in the constellation of Cassiopeia. Lobster Claw Nebula, Bubble Nebula, Northern Lagoon Nebula, M52 Star Cluster and Nova Cas 2021 a new star that appeared around spring time as a result of it going super Nova. Targets range from 4,500 light year to 11,500 light year from my garden. 5hrs of 4min subs at unity gane 30 of each bias framesBortle 5AA Wave 80mmAA 269c OSCLextreme filterCaptured in NINA Stacked in APP, processed in Pixinsight 5 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 4 minutes ago, Bunglesastroimaging said: Busy part of the night sky in the constellation of Cassiopeia. Lobster Claw Nebula, Bubble Nebula, Northern Lagoon Nebula, M52 Star Cluster and Nova Cas 2021 a new star that appeared around spring time as a result of it going super Nova. Targets range from 4,500 light year to 11,500 light year from my garden. 5hrs of 4min subs at unity gane 30 of each bias framesBortle 5AA Wave 80mmAA 269c OSCLextreme filterCaptured in NINA Stacked in APP, processed in Pixinsight Nice one, love the colours. The background seems a touch green though. Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 Ran scnr to get rid of any. Didn't appear so when I looked on my laptop screen. Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 1 hour ago, Bunglesastroimaging said: Ran scnr to get rid of any. Didn't appear so when I looked on my laptop screen. Maybe my monitor is calibrated differently to yours. Just did a quick check in PI. Your red and green are reading 0.25, your blue is way low at 0.03. Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 The tutorial I followed deletes the blue chsnnel and remakes one using the red and green in pixelmath to make a false hubble palette using an OSC. Might explain the numbers you mention. I've no clue as to what those numbers are or how to locate them. Second time using pixinsight. Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 (edited) 20 minutes ago, Bunglesastroimaging said: The tutorial I followed deletes the blue chsnnel and remakes one using the red and green in pixelmath to make a false hubble palette using an OSC. Might explain the numbers you mention. I've no clue as to what those numbers are or how to locate them. Second time using pixinsight. The easiest way is to see if your colours are balanced is just look at your histogram transformation in PI. The numbers I refer to are located at the bottom of the PI window, they will show the relevant RGB readings when you hover your mouse over the image. When I looked at the histogram, your black point in the red and green was nowhere near the curve, hence the high readings. This is what it looks like after a slight adjustment in PI. Hope you don't mind. Edited September 6, 2021 by AstronomyUkraine 1 Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 That looks much better. Feel free to send it me. Any chance you could try show me what you have done to alter it. Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 5 minutes ago, Bunglesastroimaging said: That looks much better. Feel free to send it me. Any chance you could try show me what you have done to alter it. I'll send a few screenshots for you. The top one is the original, showing the histogram. The second one shows the adjustment made to the histogram. Color Calibration should balance your colours without touching the histogram. Original Adjusted Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 What did you do to then change it? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 16 minutes ago, Bunglesastroimaging said: What did you do to then change it? Select the red and green channels, and moved the black point slider until the channels matched. The blue is already correct. Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 I'll try have a play tomorrow. So I just load the image up and open the Histogram Transformation tool? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 13 minutes ago, Bunglesastroimaging said: I'll try have a play tomorrow. So I just load the image up and open the Histogram Transformation tool? Yes, but don't forget to click the little tick box in the histogram, that way it will track your changes. You can see it highlighted in the images I uploaded. Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 This tick thing? Do I go into each channel separate and do them. Or the RGB tab ? Where are the numbers you mentioned earlier that show the difference? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted September 6, 2021 Share Posted September 6, 2021 (edited) 19 minutes ago, Bunglesastroimaging said: This tick thing? Do I go into each channel separate and do them. Or the RGB tab ? Where are the numbers you mentioned earlier that show the difference? Go into the seperate channels. Here you can see the numbers outlined. But don't forget to hover your mouse over the image. Edited September 6, 2021 by AstronomyUkraine Quote Link to comment Share on other sites More sharing options...
Bunglesastroimaging Posted September 6, 2021 Author Share Posted September 6, 2021 Thanks. Will have a play tomorrow. My laptop I left at work. 1 Quote Link to comment Share on other sites More sharing options...
Dmack1 Posted September 8, 2021 Share Posted September 8, 2021 thats a great image of a fantastic FOV - Brians balanced version is even better so let us see yours once you've done it. 1 Quote Link to comment Share on other sites More sharing options...
MarkAR Posted September 8, 2021 Share Posted September 8, 2021 Lovely FOV getting so many targets in one. 1 Quote Link to comment Share on other sites More sharing options...
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