Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
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M31 - Image The Universe First Light, 


            Paddy Gilliland
M31 - Image The Universe First Light
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M31 - Image The Universe First Light

Technical card

Imaging telescopes or lenses: Borg 125

Imaging cameras: QSI 683WSG-8 OAG QSI 683

Guiding cameras: QSI 683WSG-8 OAG QSI 683

Focal reducers: Borg Super reducer f/4

Software: Pixinsight 1.8

Filters: Astronomik Deep-Sky G Filter  ·  Astronomik Ha 6nm  ·  Astronomik Deep-Sky B Filter  ·  Astronomik Deep-Sky R Filter  ·  Astronomik SII 6nm

Dates:Oct. 24, 2017

Astronomik Deep-Sky B Filter: 20x300" bin 1x1
Astronomik Deep-Sky G Filter: 20x300" bin 1x1
Astronomik Deep-Sky R Filter: 20x300" bin 1x1
Astronomik Ha 6nm: 18x600" bin 1x1
Astronomik L2 Lum: 50x10" bin 1x1
Astronomik L2 Lum: 24x300" bin 1x1

Integration: 10.1 hours

Avg. Moon age: 4.33 days

Avg. Moon phase: 19.76%

Basic astrometry details

Astrometry.net job: 1786280

RA center: 0h 42' 45"

DEC center: +41° 18' 28"

Pixel scale: 2.299 arcsec/pixel

Orientation: 271.100 degrees

Field radius: 1.300 degrees

Resolution: 3240x2468

Locations: Image The Universe Remote Telescopes, Fregenal de la Sierra, Extremadura, Spain


Some first light from the first of 3 initial setups in Spain.
Started off with something easy but pleased with the results so thought I would post.
Some nice HA showing through and great details for a short test run.

M31 Ha Review
Now we I am able to look more in depth at the objects I image thanks to the superb seeing.
This image highlights some of the HII (Hydrogen areas) in the first light M31 image. The red areas are HII nebulae in the galaxy - like the HII nebulae we see in our galaxy just a lot further away! It is remarkable how much HII is present in this image not to mention it has definition and structure, astounding! As it has not been possible to capture until we started imaging at the location they are mainly all new nebulae to me (M33 is well known for its Ha to see so much in M31 was a surprise) so now off to learn the details behind each of these areas.
As well as the nice pictures its great to be able to get additional data and information to learn from.

A speck of light that changed our Universe
This little speck of light (a Cepheid Varible star) changed the Universe as we knew it in 1923! This is Hubble's Variable Star Number 1.
Cepheid variable stars had already been shown to be reliable distance markers due to the rate at which they brighten and fade proportional to their peak brightness. The brighter it is the slower the fluctuation. Through comparison of the star’s apparent brightness versus the brightness predicted by the fluctuations, astronomers can deduce how far away they are.
Edwin Hubble's measurement on this star, in what was then known as the Andromeda Nebula proved it is far beyond our Milky Way.
With this finding confirmed our understanding of the Universe changed, it became a far bigger place, expanding from just the Milky Way to billions of galaxies almost overnight.
Thanks to Rick Stevenson for spotting in the image.


Sky plot

Sky plot


M31 - Image The Universe First Light, 


            Paddy Gilliland

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