Jkulin Posted November 14, 2020 Share Posted November 14, 2020 I last attempted this about 3 years ago, but the filters I was using created halos, time to try again.This has taken me 4 attempts in Pixinsight to get to this as with my skies it presented a challenge with the processing.Taken with my GSO/Altair 10" F7.9 Truss, Moravian G2-8300 MkII & FW, iOptron 120EC, Pegasus UPB & Focuser, Chroma 2" Unmounted Filters.A nice way to fully christen the new replacement dome ?More info: - https://www.astrobin.com/vpgt3u/Here's the Bumpf: -The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across. 4 Quote Link to comment Share on other sites More sharing options...
Dmack1 Posted November 14, 2020 Share Posted November 14, 2020 Wow that's super! You have got great detail right in to the centre and I like the way the stars behind the dust really emphasise how thick and brown the dust clouds are. Quote Link to comment Share on other sites More sharing options...
Bob-c Posted November 14, 2020 Share Posted November 14, 2020 Very nice image love the dust , you have it showing well.Bob. Quote Link to comment Share on other sites More sharing options...
Jkulin Posted November 15, 2020 Author Share Posted November 15, 2020 Thanks David and Bob, much appreciated, it was a real pig to achieve that and if it hadn't been for @Peter-shah then I would not have resolved the issue on the colour calibration. 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 15, 2020 Share Posted November 15, 2020 Looks great. Nice to see an image of the Iris, without the central star blown out.Brian 1 Quote Link to comment Share on other sites More sharing options...
Gina Posted November 15, 2020 Share Posted November 15, 2020 Very nice Iris John. That's a difficult one but well done - nice processing. ? 1 Quote Link to comment Share on other sites More sharing options...
MarkAR Posted November 17, 2020 Share Posted November 17, 2020 Nice work John, not an easy target. 1 Quote Link to comment Share on other sites More sharing options...
Jkulin Posted November 17, 2020 Author Share Posted November 17, 2020 Posted by: @MarkAR Nice work John, not an easy target.Thanks Mark and all, there's a bit too much noise in the brown stuff, and I may have another look at that, but I am quite pleased with the centre. Quote Link to comment Share on other sites More sharing options...
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