NGC 2261 - Hubble's Variable Nebula (with animation) (Prath Pavaskar)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: Hubble's Nebula · Hubble's variable neb · NGC 2261

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NGC 2261 - Hubble's Variable Nebula (with animation)

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NGC 2261 - Hubble's Variable Nebula (with animation)

The data are from Telescope.Live (CHI-1).

L: 50X600" + 72X300"
R: 4X600"
G: 4X600"
B: 4X600"

Telescope: Planewave CDK24
Mount: Mathis MI-1000/1250
Camera: FLI PL 9000

NGC 2261 aka Hubble's Variable Nebula is a reflection nebula located in the constellation Monoceros illuminated by the star R Monocerotis. R Mon lights up a nearby cloud of gas and dust, but the shape and brightness slowly changes visibly over weeks and months, and the nebula looks like a small comet. There is no predictable periodicity to the variation. One explanation proposed for the variability is that dust near R Mon periodically blocks the illumination from the star. This casts a temporary shadow on the nearby clouds.

This dataset containing over 19 hrs of images spread out over 4 months was captured at Telescope.Live (CHI-1), requested by Astrobiscuit. The main image is of course the integration of all data, but I have also included a gif of 22 frames showing some signs of change in the morphology of the nebula. Unfortunately, the nebula wasn't very dynamic over this period of time. Nevertheless, you can see some rippling effect.

Please watch this interesting video on Astrobiscuit's channel: https://www.youtube.com/watch?v=LeiVERr2J2Q

Final
Original
J

J

Description: Animation showing variability over 4 months (7th Jan to 8th Apr)

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Status	Advanced success
Started	...
Astrometry.net job	4888203
PixInsight job	HTF03VT2C1QDWDAO728VXE8HDKFUXTOZ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h39m08s.424
RA (top/left)	06h39m52s.930
RA (top/right)	06h38m26s.237
RA (bottom/right)	06h38m24s.723
RA (bottom/left)	06h39m50s.560

Dec (center)	+08°46′07″.37
Dec (top/left)	+08°57′00″.63
Dec (top/right)	+08°57′20″.89
Dec (bottom/right)	+08°35′12″.18
Dec (bottom/left)	+08°34′52″.100

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NGC 2261 - Hubble's Variable Nebula (with animation)

NGC 2261 - Hubble's Variable Nebula (with animation)

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NGC 2261 - Hubble's Variable Nebula (with animation)

NGC 2261 - Hubble's Variable Nebula (with animation)

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