M31 Andromeda Galaxy (Jesco)

M31 Andromeda Galaxy

Evolution of my M31 captures during the autumn/winter 2019. This shows my learning curve nicely. I started with a simple mechanical star tracker and learnt a lot from that point on...

Revision A: My first try using the Omegon LX2 star tracker. Messed up the polar align. Managed only 8s subs at 105mm. Stacked in DSS, edited in GIMP.

Revision B: Added 18x30s and 30x60s subs at 105mm, same LX2 tracker. Started using a light-pollution filter.

Revision C: Re-edited the previous data in APP and GIMP.

Revision D: 2h of new data, StarAdventurer mount, longer focal length. Better processing in APP and GIMP.

Revision F: Combined all 105mm and 195mm data for my final revision. I stacked the 195mm subs in APP with SuperPixel debayering to result in 8 arcsec/px scale, which is close to the 7.7 arcsec/px scale of my 105mm lens. I then let APP stack both stacked images at each focal length. I then removed gradients, did a color calibration and stretch in APP. In GIMP I created an artifical luminance layer so I can edit L and RGB seperately. I set the blackpoint, did a targeted curve stretch for some more detail. I lowered the color temperature to 5000K. For the first time, the faint blue tones at the outer edges of the galaxy become visible.

Revision H: I tried some minor deconvulution in SIRIL (no starmasks, so I couldn't do too much). I also improved in stretching and post-processing in APP and GIMP.

Revision J: Post-processed the Stack from APP in PixInsight, using the trial. Colors could be better but denoise is far better. I understand why people like PI.

Revision K: Revision J from PixInsight with some slight star size reduction.

There is still much room for improvement. Longer integration time (!) & better editing. The former is hard because weather was awful this season and my balcony only allows for 3h imaging at a time.

B

Description: added 18x30s and 30x60s subs, same LX2 tracker

Uploaded: ...

C

Description: re-edited previous 45min of data in AstroPixelProcessor

Uploaded: ...

D

Description: 2h of new data, StarAdventurer mount, longer focal length lens at 195mm.

Uploaded: ...

F

Description: combined all previous data for 2.h integration

Uploaded: ...

H

Description: did some minor decon in SIRIL; improved in post-processing in APP and GIMP

Uploaded: ...

I

Description: First try with PixInsight

Uploaded: ...

J

Description: PixInsight plus saturation enhancement in Lifhtroom

Uploaded: ...

K

Description: reduced star sizes with MorphologicalTransformation

Uploaded: ...

	Distinct awarded users	Total awarded images
Image of the day
Top picks
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Basic success
Started	...
Astrometry.net job	3287173
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M31 Andromeda Galaxy

M31 Andromeda Galaxy

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M31 Andromeda Galaxy

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