Observation by Richard Sargent: NGC 2261 Hubble's Variable Nebula

Uploaded by

Richard Sargent

Observer

Richard Sargent

Observed

2022 Nov 29 - 00:21

Uploaded

2022 Dec 09 - 20:40

Objects

Hubble's Variable Nebula (NGC2261)

Equipment

C14 at f7 and Atik 460EX camera

Exposure

20 x 1 minute exposures each frame

Target name

NGC 2261 Hubble's Variable Nebula

Title

NGC 2261 Hubble's Variable Nebula

About this image

Following my previous animation of this nebula I thought I'd see if animation of other images I've taken would reveal any changes, and they do.

This repeating animation is in two parts separated by blank frames. The first part shows six images taken between 2020/12/14 and 2021/3/21 in which I can just make out a semicircular arc of light moving up the cone of the nebula from the base. This sequence ends with a couple of frames in which the arc (actually two of them) is revealed by subtracting a base image from each of the dated images and contrast stretching the difference.

In the second part of the animation four images taken between 2021/11/28 and 2022/11/28 show changes at the base of the cone, in particular the light bridge between the star R Mon and the base of the cone of the nebula. The light bridge moves from centre to left i.e. to the east. This is a slightly more detailed version of my previous animation.

This is a variable nebula where changes are sometimes more easily seen by blinking between or animating images taken.

Files associated with this observation

NGC2261 Animation.gif (1.9 MB)

Like this image

Jeremy Shears, Grant Privett, Peter Mulligan, Callum Potter

Comments

Grant Privett, 2022 Dec 09 - 22:46 UTC

Lovely piece of work! Looking forward to seeing more.

Richard Sargent

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