Hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7327  ·  NGC 7331  ·  NGC 7335  ·  NGC 7336  ·  NGC 7337  ·  NGC 7340  ·  NGC7331  ·  NGC7333  ·  NGC7335  ·  NGC7336  ·  NGC7337  ·  NGC7338  ·  NGC7340
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ngc 7331  15th and 16th September 2020 + combined with 2019 image, 



    
        

            Stefano Ciapetti
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ngc 7331 15th and 16th September 2020 + combined with 2019 image

Getting plate-solving status, please wait...
ngc 7331  15th and 16th September 2020 + combined with 2019 image, 



    
        

            Stefano Ciapetti
Powered byPixInsight

ngc 7331 15th and 16th September 2020 + combined with 2019 image

Imaging telescopes or lenses: Orion USA 10" Astrograph F/3,9

Imaging cameras: QHYCCD 183m

Mounts: Ioptron Cem60

Software: Astroart

Filters: Baader Planetarium H-alpha 50nm narrowband filter

Accessory: Baader MPCC Mark III


Dates:Sept. 15, 2020Sept. 16, 2020

Frames:Baader Planetarium H-alpha 50nm narrowband filter: 820x60" (13h 40') -20C bin 2x2

Integration: 13h 40'

Darks: ~360

Avg. Moon age: 27.87 days

Avg. Moon phase: 3.42%

Bortle Dark-Sky Scale: 8.00


Astrometry.net job: 4154646

RA center: 22h 37' 11"

DEC center: +34° 24' 40"

Pixel scale: 0.983 arcsec/pixel

Orientation: 150.065 degrees

Field radius: 0.386 degrees


Resolution: 2434x1444

Locations: Prato - S.Lucia Home Terrace Observatory, Prato, Prato, Italy

Data source: Backyard

Description

820 60 secs unguided frames taken on the nights of 15th and 16th of September 2020. Image has also combined with below one:

https://astrob.in/z765m6/0/

taken on the same days of 2019 (strange coincidence).

Imaging train was Orion 250 F 3.9 Telescope, camera QHY183M and mount Ioptron CEM60. Only changement is the filter. In 2019 I have used a UHC filter and in 2020 a Baader 35nm HA filter. Aquisition, stacking and some little processing wiht Astroart. With PS I have just reduced the gradient using AstroFlat pro.

NGC 7331, also known as Caldwell 30, is an unbarred spiral galaxy about 40 million light-years (12 Mpc) away in the constellation Pegasus. It was discovered by William Herschel in 1784. NGC 7331 is the brightest galaxy in the field of a visual grouping known as the NGC 7331 Group of galaxies. The other members of the group are the lenticular or unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These galaxies lie far in the background at distances of approximately 332, 365, 348 and 294 million light years, respectively (Wikipedia)

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