1 7th

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Dates & Location

12th - 22th September 2020 from the ICAstro site, Oria, Spain. Elevation 1022 m.
Lat 38°:45.4 N, Long 00°:02.1W https://icastronomy.com/services/oria/location-oria.html
 

Catalogue identification

M 31: Messier catalogue
NGC 224
Common name: Andromeda Galaxy or The Great Spiral Galaxy.

In this image, North is up.


Equipment Used

Tak FSQ106N at 530 mm focal length, F5.0.
Paramount ME German equatorial Mount.
Camera - Moravian Instruments G3-16200 with 7 position FW and OAG.
TheSkyX Pro telescope control.
SGP used for camera, PHD Guide and Focus control.

Starlight Instruments Boss Focuser with FSQ rear cell replacement.
Lodestar guide camera.


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Where it is in space

This field is approx 116 x 88 arcminutes - ie ~ 4 x 3 Moon diameters.
At a visual magnitude of 3.4 the M31 is one of the most distant objects that can be seen with the naked eye. It can be located approx 3 degrees NW of Mu Andromedae.


 

Acquisition

Remote session using Splashtop control from Ravenshead, UK.
Colour pallette:LRGB + Ha
Exposures: R:G:B 10 x 10 min each. Lum 20 x10 min
Narrowband exposures: Ha 20 x 10 min.
All sub-exposures
taken at -30°C.
All images binned 1x1.
Automated remote sessions using Sequence Generator Pro (SGP)

 

  What it is

M31 is some 2.5 million light years from us and is the nearest major galaxy to our own Milky Way galaxy. It is also one of the largest of the Local Group of 46 galaxies with a span of some 220.000 light Years. It is estimated to contain one trillion stars compared with our galaxy of 200 - 400 billion stars.
In about 4.5 billion years the M31 is expected to collide with the Milky Way and after a gravitational "dance" will orbit each other, eventually taking the form of a giant elliptical galaxy.
of the Local Group of galaxiesThese are
visual magnitude of 6.9

loud.

Processing Methods

All data reduction with CCDStack.
RGB masters and master Ha created in CCDStack.
Master RGB colour image created in PixInsight.
Master colour + Ha combine created in Photoshop CS6.
All finishing performed in PhotoShop
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