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NGC 1555 Hind's Variable Nebula
PixInsight SVG DocumentGenerated with PixInsight Core 1.8.8-10 (x64)Struve's Lost nebulaNGC1554NGC1555Hind's variable nebulaVdB28LBN 817+18°30′+18°45′+19°+19°15′+19°30′+19°45′4ʰ20ᵐ4ʰ21ᵐ4ʰ22ᵐ4ʰ23ᵐ4ʰ24ᵐ
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NGC 1555 Hind's Variable Nebula Feb 3, 2022 2k views3612×49404.18 MB

NGC 1555 Hind's Variable Nebula
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Comments
Luigi Ghilardi Feb 3, 2022
Beautiful ❤️
Dawn Lowry Feb 3, 2022
thank you so very much!
Christoph Lichtblau Feb 3, 2022
Really nice pic of that difficult target Dawn.
Congratulations..

Christoph
Dawn Lowry Feb 3, 2022
Thank you very very much
Alan Brunelle Feb 3, 2022
Great image!  I will have to add this to my list of stars to follow.  Variable nebulae are very interesting.  It is not uncommon for the nebula to only gradually react to the causative star's output.  While there may be various reasons, the reason I think is really cool has to do with the fact that these nebulae can be several light years in extent and if the star erupts quickly, it literally takes the light a year or more to spread out across the surface of the clouds being illuminated.  Such is the case for McNeil's nebula in M78, which now seems to be dark.  If one is lucky enough to catch an erupting star early enough, imaging the otherwise dark nebula over weeks, months and years could catch a cool animation that actually shows the speed of light as it transits from the star across the light years of the cloud.
Dawn Lowry Feb 3, 2022
This target is very very intriguing. M78 is another that I truly enjoy!
Terry Feb 3, 2022
Very nice
Dawn Lowry Feb 3, 2022
Thank you SO MUCH
wsg Feb 4, 2022
Hi Dawn.  I am comfortable with Pixinsight but what is INVERT SCNR?
Thanks,
scott
Dawn Lowry Feb 4, 2022
I had some residual magenta:  I inverted the image and applied SCNR.  (its also used as a possible tactic against those pesky magenta stars too.
wsg Feb 4, 2022
Thank Dawn, I have learned a new PI process!
Eddy Cochez Feb 4, 2022
Waaw. 
Great job Dawn.

Congrats,
Eddy
Dawn Lowry Feb 5, 2022
Thank you Eddy!
sydney Feb 10, 2022
Woo hoo!  Congratulations on your APOD Dawn!
Dawn Lowry Feb 10, 2022
Thank you so so so much!
Scott Denning Feb 10, 2022
Fantastic and beautiful image! Congratulations on your APOD!
Dawn Lowry Feb 10, 2022
Thank you so much   I was so pleasantly surprised!!!
(deleted) Feb 11, 2022
(deleted)
Dawn Lowry Feb 11, 2022
Thank you so so much!   Definitely a joint effort for acquisition.
Anthony Fuller Jul 11, 2022
Very nice work!