The many faces of the Andromeda (Wei-Hao Wang)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda galaxy · Great Nebula in Andromeda · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

Image of the day 10/25/2015

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The many faces of the Andromeda

Image of the day 10/25/2015

Powered byPixInsight

The many faces of the Andromeda

This is a 3-frame, very deep mosaic of the Andromeda Galaxy. The total exposure time is 29.28 hr. The full mosaic has 84 Mega pixels. Different versions show the various layers of the very faint outer halo of M31.

Ver A: A normally processed image. Full image area, 25% size reduction.

Ver B: Same process as version A, but a 100% crop around the main body of M31.

Ver C: A strongly contrast-stretched version, to show the faint outer halo.

Ver D: An extremely stretched version, to show the dwarf galaxy, tidal streams, and some Galactic cirrus around M31.

Ver E (no longer available, will try to create it in the future when have time): Just for fun, this is the exposure time distribution of the image. The deepest region has an integration time of 14.62 hr (red area). The median integration time of the image is 7.66 hr (light green-cyan area).

Ver F: This picture was used as the cover photo of the 2018 Sep issue of Nature Astronomy (https://www.nature.com/natastron/volumes/2/issues/9)

Enjoy.

Original
B
Final
C
D
F

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Status	Advanced success
Started	...
Astrometry.net job	3279372
PixInsight job	SNZJ7PTQWXWLAADNSRWQAI3F8IQD72HY
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m45s.65
RA (top/left)	00h48m10s.74
RA (top/right)	00h48m23s.50
RA (bottom/right)	00h37m06s.36
RA (bottom/left)	00h37m21s.57

Dec (center)	+41°15′04″.4
Dec (top/left)	+39°51′39″.1
Dec (top/right)	+42°37′40″.9
Dec (bottom/right)	+42°37′29″.6
Dec (bottom/left)	+39°51′28″.2

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Image of the day 10/25/2015

The many faces of the Andromeda

Image of the day 10/25/2015

The many faces of the Andromeda

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Image of the day 10/25/2015

The many faces of the Andromeda

Image of the day 10/25/2015

The many faces of the Andromeda

Equipment

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Comments

Revisions

Sky plot

Histogram

In these public groups

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