Adreneline Posted June 4, 2022 Share Posted June 4, 2022 Taken over two nights of none-astro-darkness this is a four pane mosaic of the Sadr region taken with the Samyang 135mm + ASI183MM; in total it comprises 60 x 300s subs. Each pane was processed in APP and then the mosaic compiled from the separate masters, again using APP. Processed in PI. I think the starless version helps to see the structure more clearly. The trouble is knowing where to stop! This project might grow to encompass more of the surrounding nebula. Thanks for looking. Adrian 15 Link to comment Share on other sites More sharing options...
juno16 Posted June 4, 2022 Share Posted June 4, 2022 Beautiful mosaic Adrian! This is a very rich area and I am very fond of Ha (monochrome) images. I guess that it somewhat reminds me of my old b&w film processing days. The starless is nice, but the stars in your first image are very tastefully done and to me add quite a bit to the overall view. Very nice work! 1 Link to comment Share on other sites More sharing options...
geeklee Posted June 4, 2022 Share Posted June 4, 2022 (edited) That's a cracker Adrian. Excellent processing with the weak and strong nebulosity flowing together so well alongside the excellent star control. The starless one is so good - for a change enjoyed viewing the image in its entirety as big as you can - brilliant depth throughout. Edited June 4, 2022 by geeklee 1 Link to comment Share on other sites More sharing options...
Adreneline Posted June 4, 2022 Author Share Posted June 4, 2022 2 hours ago, juno16 said: Beautiful mosaic Adrian! This is a very rich area and I am very fond of Ha (monochrome) images. I guess that it somewhat reminds me of my old b&w film processing days. The starless is nice, but the stars in your first image are very tastefully done and to me add quite a bit to the overall view. Very nice work! Thanks Jim. Considering it was not astro-dark it worked pretty well really - even without astro-dark the skies here are pretty dark fortunately. I tried a new approach to adding stars back (thanks to @Rodd) and it has worked really well. AstroPixelProcessor makes assembling mosaics so easy - some experimentation was required to home in on the optimum values but in the end the star field looked really good across the whole image. I cannot begin to imagine doing the above with a film camera. 1 hour ago, geeklee said: That's a cracker Adrian. Excellent processing with the weak and strong nebulosity flowing together so well alongside the excellent star control. The starless one is so good - for a change enjoyed viewing the image in its entirety as big as you can - brilliant depth throughout. Thank you Lee. It's turned out better than I expected. It needed a few runs in APP to get the stars sorted at the overlaps but in the end it has worked pretty well. Also tried a new approach to assembling the finished image from the component parts (see PM). I think it might be a few weeks before I can add anymore Ha or OIII - the OIII might spoil it so might be best left as is. Adrian Link to comment Share on other sites More sharing options...
tomato Posted June 4, 2022 Share Posted June 4, 2022 Very nice, I think monochrome really works in this region. 1 Link to comment Share on other sites More sharing options...
Adreneline Posted June 4, 2022 Author Share Posted June 4, 2022 For those who might be interested this is the APP screen upon completion of the mosaic from the four master frames: A slight rotation and a small crop to arrive at the image shown above. I used the ASIair SkyAtlas to plan the image - nothing technical - just lined the panes up by eye Adrian 1 Link to comment Share on other sites More sharing options...
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