Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  NGC 7023  ·  VdB139
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ngc7023 - over 16 hours unguided exposures in 4 nights, 



    
        

            Stefano Ciapetti
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ngc7023 - over 16 hours unguided exposures in 4 nights

Getting plate-solving status, please wait...
ngc7023 - over 16 hours unguided exposures in 4 nights, 



    
        

            Stefano Ciapetti
Powered byPixInsight

ngc7023 - over 16 hours unguided exposures in 4 nights

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

Imaging cameras: QHYCCD 183m

Mounts: Ioptron Cem60

Software: Astroart

Filters: Astronomik H-alpha 12nm Ha 12nm CCD

Accessory: Baader MPCC Mark III


Dates:July 19, 2020July 20, 2020July 21, 2020July 22, 2020

Frames:
Astronomik H-alpha 12nm Ha 12nm CCD: 500x60" (8h 20') (gain: 16.00) -20C bin 2x2
Astronomik H-alpha 12nm Ha 12nm CCD: 600x60" (10h) (gain: 16.00) -20C

Integration: 18h 20'

Darks: 360

Avg. Moon age: 15.07 days

Avg. Moon phase: 1.67%

Bortle Dark-Sky Scale: 7.00


RA center: 21h00m31s.971

DEC center: +68°1140.51

Pixel scale: 0.984 arcsec/pixel

Orientation: 154.345 degrees

Field radius: 0.404 degrees

More info:Open 


Resolution: 2477x1625

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

Data source: Backyard

Description

Image taken during the nights of 19, 20, 21 and 22nd of July with a Newton Orion 250 f 3.9, a QHY183M cooled camera on top of a Ioptron CEM60 EC. The exposures are 1100 60 secs unguided exposures. Taken with Astroart.

Some processing (stacking, dark substraction, star elongation correction) with Astroart. Remaining with PS.

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487.

The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated SAO 19158. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across. (Wikipedia)

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  • ngc7023 - over 16 hours unguided exposures in 4 nights, 



    
        

            Stefano Ciapetti
    Original
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    ngc7023 - over 16 hours unguided exposures in 4 nights, 



    
        

            Stefano Ciapetti
    B

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Description: increased contrast using curves

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ngc7023 - over 16 hours unguided exposures in 4 nights, 



    
        

            Stefano Ciapetti