Jkulin Posted April 18, 2021 Share Posted April 18, 2021 Well we have had a run of clear nights with very little moon, so it has allowed me to build up quite a few subjects to process, the latest being M44 Beehive Cluster. To some it may seem boring or not of much interest, to me it is just another wonder of the universe that this collection of stars should gyrate together. Captured with my Esprit 100, Altair 26c, iOptron 40ec, Pegasus UPB, ZWO OAG, Lodestar x2 Guide Camera, this was mounted outside of my Observatory on one of iOptron heavy weight Piers. Further Details: - https://www.astrobin.com/z68wdg/ As usual here is the bumf: - The Beehive Cluster (also known as Praesepe (Latin for "manger"), M44, NGC 2632, or Cr 189), is an open cluster in the constellation Cancer. One of the nearest open clusters to Earth, it contains a larger population of stars than other nearby bright open clusters. Under dark skies, the Beehive Cluster looks like a small nebulous object to the naked eye, and has been known since ancient times. Classical astronomer Ptolemy described it as a "nebulous mass in the breast of Cancer". It was among the first objects that Galileo studied with his telescope. Age and proper motion coincide with those of the Hyades, suggesting they may share similar origins. Both clusters also contain red giants and white dwarfs, which represent later stages of stellar evolution, along with many main sequence stars. Distance to M44 is often cited to be between 160 and 187 parsecs (520–610 light years),[6][7][8] but the revised Hipparcos parallaxes (2009) for Praesepe members and the latest infrared color-magnitude diagram favors an analogous distance of 182 pc. There are better age estimates of around 600 million years (compared to about 625 million years for the Hyades). The diameter of the bright inner cluster core is about 7.0 parsecs (23 light years). At 1.5° across, the cluster easily fits within the field of view of binoculars or low-powered small telescopes. 6 Quote Link to comment Share on other sites More sharing options...
Bob-c Posted April 18, 2021 Share Posted April 18, 2021 Looking good John,very nice. Bob. 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 18, 2021 Share Posted April 18, 2021 Beautiful star colour John. Repaired HSV Separation? Brian 1 Quote Link to comment Share on other sites More sharing options...
Jkulin Posted April 18, 2021 Author Share Posted April 18, 2021 13 minutes ago, AstronomyUkraine said: Beautiful star colour John. Repaired HSV Separation? Brian Yep Brian, The HSV repair tool is brilliant 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 18, 2021 Share Posted April 18, 2021 2 minutes ago, Jkulin said: Yep Brian, The HSV repair tool is brilliant I use it on all my RGB images now. I don't think it is as effectice on NB images. Quote Link to comment Share on other sites More sharing options...
Jkulin Posted April 18, 2021 Author Share Posted April 18, 2021 3 minutes ago, AstronomyUkraine said: I use it on all my RGB images now. I don't think it is as effectice on NB images. I use it all the time now Brian as even with my NB images I use it for the RGB stars, did I send you the repaired script? 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 18, 2021 Share Posted April 18, 2021 (edited) 5 minutes ago, Jkulin said: I use it all the time now Brian as even with my NB images I use it for the RGB stars, did I send you the repaired script? I believe the script is installed as standard in PI now John. I think you sent me the SHO AIP, or maybe another script, can't remember now. Update: just checked the PI thread, you sent me the script repaired by Fred, now I remember. Edited April 18, 2021 by AstronomyUkraine 1 Quote Link to comment Share on other sites More sharing options...
Jkulin Posted April 18, 2021 Author Share Posted April 18, 2021 Fredvanner on the PI site rewrote the script as it kept bombing out, attached is his revision which never fails Freds Repairs Script RepairedHSVSeparation.zip 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 18, 2021 Share Posted April 18, 2021 1 minute ago, Jkulin said: Fredvanner on the PI site rewrote the script as it kept bombing out, attached is his revision which never fails Freds Repairs Script RepairedHSVSeparation.zip 11.49 kB · 0 downloads Just replied before you, regarding the one repaired by Fred. 1 Quote Link to comment Share on other sites More sharing options...
MarkAR Posted April 18, 2021 Share Posted April 18, 2021 Lovely image John, good star colours. 1 Quote Link to comment Share on other sites More sharing options...
PeterBolt Posted April 19, 2021 Share Posted April 19, 2021 Very nice 👍 1 Quote Link to comment Share on other sites More sharing options...
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