gorann Posted February 7, 2021 Share Posted February 7, 2021 (edited) This two-panel mosaic was taken under rather difficult conditions with the moon partially up, a snow-covered ground brightening the sky and poor seeing due to ice crystals in the air, so a wise person would not have aimed at this very faint object. But given the circumstances I am relatively pleased with the result. From Wikipedia: Simeis 147, also known as the Spaghetti Nebula, SNR G180.0-01.7 or Sharpless 2-240, is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. The nebulous area is fairly large with an almost spherical shell and filamentary structure. The remnant has an apparent diameter of approximately 3 degrees, an estimated distance of approximately 3000 (±350) light-years, and an age of approximately 40,000 years. It is believed that after its stellar explosion a rapidly spinning neutron star known as pulsar PSR J0538+2817 was left behind in the nebula core, emitting a strong radio signal. Equipment: RASA 8 and ASI2600MC (gain 100) with an IDAS NBX OiiiHa filter. 92 x 5 min subs so totally 7.7 hours. Collected during two nights on February 3-4. Stacked and stitched in PI and processed mainly in PI. Edited February 7, 2021 by gorann 18 Link to comment Share on other sites More sharing options...
Laurin Dave Posted February 7, 2021 Share Posted February 7, 2021 Another excellent image Goran.. How did you do the stitching? The new Photometric Mosaic script is worth looking at. Dave Link to comment Share on other sites More sharing options...
MartinB Posted February 7, 2021 Share Posted February 7, 2021 That's superb. The amount of OIII you have picked up is amazing, a tribute not just to the fast scope set up and the NBX filter but also your processing skills. Well done indeed! Link to comment Share on other sites More sharing options...
gorann Posted February 7, 2021 Author Share Posted February 7, 2021 3 minutes ago, Laurin Dave said: Another excellent image Goran.. How did you do the stitching? The new Photometric Mosaic script is worth looking at. Dave Thanks Dave! I just did the ordinary mosaic star alignment in PI. Where do I find that script? Will it both align the stars and match the brightness and colours? Link to comment Share on other sites More sharing options...
gorann Posted February 7, 2021 Author Share Posted February 7, 2021 Just now, MartinB said: That's superb. The amount of OIII you have picked up is amazing, a tribute not just to the fast scope set up and the NBX filter but also your processing skills. Well done indeed! Thanks a lot Martin! Yes I was also surprised how much Oiii signal I collected, more than in many other spagetti images I have seen. Great filter and the only issue I have had with it are Ha halos around bright red stars but Hutech are now replacing the NBX filter with the new NBZ for free. Apparently they have fixed the halo issue and FLO will send me one when they get it. Link to comment Share on other sites More sharing options...
Laurin Dave Posted February 7, 2021 Share Posted February 7, 2021 Hi Goran Its in "Script" .... "Mosaic" ... then there are three scripts "Photometric Mosaic" " SplitMosaic Tile" and "Trim Mosaic Tile*.. There's a very good Helpfile top get you started .. But in short.. you a) Plate Solve each integration... use the "Mosaic by Co-ordinates" script (in Script.. Utilities) to register everything .. Trim each tile to remove any edge effects caused by registering ... then use the Photometric mosaic to join it all together.. I've found it works well. Dave 1 Link to comment Share on other sites More sharing options...
Chefgage Posted February 7, 2021 Share Posted February 7, 2021 1 hour ago, gorann said: This two-panel mosaic was taken under rather difficult conditions with the moon partially up, a snow-covered ground brightening the sky and poor seeing due to ice crystals in the air, so a wise person would not have aimed at this very faint object. But given the circumstances I am relatively pleased with the result. From Wikipedia: Simeis 147, also known as the Spaghetti Nebula, SNR G180.0-01.7 or Sharpless 2-240, is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. The nebulous area is fairly large with an almost spherical shell and filamentary structure. The remnant has an apparent diameter of approximately 3 degrees, an estimated distance of approximately 3000 (±350) light-years, and an age of approximately 40,000 years. It is believed that after its stellar explosion a rapidly spinning neutron star known as pulsar PSR J0538+2817 was left behind in the nebula core, emitting a strong radio signal. Equipment: RASA 8 and ASI2600MC (gain 100) with an IDAS NBX OiiiHa filter. 92 x 5 min subs so totally 7.7 hours. Collected during two nights on February 3-4. Stacked and stitched in PI and processed mainly in PI. Impressive image. Can I ask what was the sky quality/ bortle when this was taken please. Link to comment Share on other sites More sharing options...
MartinB Posted February 7, 2021 Share Posted February 7, 2021 54 minutes ago, gorann said: Thanks a lot Martin! Yes I was also surprised how much Oiii signal I collected, more than in many other spagetti images I have seen. Great filter and the only issue I have had with it are Ha halos around bright red stars but Hutech are now replacing the NBX filter with the new NBZ for free. Apparently they have fixed the halo issue and FLO will send me one when they get it. I have just received my NBZ filter! For use with a new ZWO2600MC and 200mm F2.8 lens Link to comment Share on other sites More sharing options...
gorann Posted February 7, 2021 Author Share Posted February 7, 2021 2 minutes ago, Chefgage said: Impressive image. Can I ask what was the sky quality/ bortle when this was taken please. Thanks! On good clear nights without a moon my SQM may reach 21.6 (so Bortle 2) here but for this image with the moon partially up and snow on the ground reflecting light my SQM meter showed 20.4 (Bortle 4). 1 Link to comment Share on other sites More sharing options...
gorann Posted February 7, 2021 Author Share Posted February 7, 2021 Just now, MartinB said: I have just received my NBZ filter! For use with a new ZWO2600MC and 200mm F2.8 lens Great news! Then mine may also be on its way Good luck with it and CO! Link to comment Share on other sites More sharing options...
Chefgage Posted February 7, 2021 Share Posted February 7, 2021 54 minutes ago, gorann said: Thanks! On good clear nights without a moon my SQM may reach 21.6 (so Bortle 2) here but for this image with the moon partially up and snow on the ground reflecting light my SQM meter showed 20.4 (Bortle 4). I am jealous of your skies. Here I am usually at about bortle 8 according the clear outside app. 1 Link to comment Share on other sites More sharing options...
Stuf1978 Posted February 7, 2021 Share Posted February 7, 2021 Great work, the 2600MC Pro was already on my shopping list..... May need to add a RASA 8 onto it as well 😂 Link to comment Share on other sites More sharing options...
gorann Posted February 7, 2021 Author Share Posted February 7, 2021 42 minutes ago, Stuf1978 said: Great work, the 2600MC Pro was already on my shopping list..... May need to add a RASA 8 onto it as well 😂 Thanks! That is a great camera and the RASA 8 is a must! Just keep looking for anyone having these jems in stock. 1 Link to comment Share on other sites More sharing options...
Stuf1978 Posted February 7, 2021 Share Posted February 7, 2021 5 hours ago, gorann said: Thanks! That is a great camera and the RASA 8 is a must! Just keep looking for anyone having these jems in stock. Yeah, FLO had stock of the camera last time I checked, unfortunately a bit more saving is required yet ☹ 1 Link to comment Share on other sites More sharing options...
peter shah Posted February 9, 2021 Share Posted February 9, 2021 great rendition Goran very dep too Link to comment Share on other sites More sharing options...
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