Hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7331  ·  NGC 7335  ·  NGC 7337
"A new hope - NGC 7331", 


"A new hope - NGC 7331"
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"A new hope - NGC 7331"

"A new hope - NGC 7331", 


"A new hope - NGC 7331"
Powered byPixInsight

"A new hope - NGC 7331"

Technical card

Imaging telescopes or lenses: Lacerta Newton ohne Namen 200/800

Imaging cameras: Atik 460 EX Mono

Mounts: 10 Micron GM 1000 HPS

Focal reducers: Lacerta GPU

Software: PixInsight  ·  CCDciel  ·  Darktable

Filters: Baader Planetarium Red 1.25"  ·  Baader Planetarium Blue 1.25"  ·  Baader Planetarium Green 1.25"  ·  Hutech IDAS 2" LPS P2

Accessory: Berlebach Planet

Dates:Oct. 14, 2017Oct. 15, 2017Oct. 16, 2017Oct. 18, 2017

Baader Planetarium Blue 1.25": 24x180" -15C bin 1x1
Baader Planetarium Green 1.25": 51x180" -15C bin 1x1
Baader Planetarium Red 1.25": 38x180" -10C bin 1x1
Baader Planetarium Red 1.25": 29x180" -15C bin 1x1

Integration: 7.1 hours

Darks: ~10

Flats: ~10

Bias: ~100

Avg. Moon age: 26.01 days

Avg. Moon phase: 15.27%

Basic astrometry details

Astrometry.net job: 1793222

RA center: 22h 37' 22"

DEC center: +34° 25' 37"

Pixel scale: 0.834 arcsec/pixel

Orientation: 208.454 degrees

Field radius: 0.410 degrees

Resolution: 1824x1529


This is my second attempt on this great galaxy. Due the 800mm FL the FoV is a bigger, so all those surrounding small galaxies in the field are visible too.
Also it's the first light for my first newtonian telescope.

I've created a 2x drizzle Lum out of all the RGB data , processed it and scaled to 70%.
This time the drizzling was possible with Gauss and Variablesize kernels, without seeing drizzle artifacts.

The white balance was done by the photometric script from PI. A really great tool.

After a second NGC7331 attempt, my personal feeling tells me, the blue component of this galaxy is not as strong as in other spirals. In regard of color and size, NGC7331 seems to match the Andromeda galaxy.


Sky plot

Sky plot


"A new hope - NGC 7331",