Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7023
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Iris and Ghost (NGC7023 and VdB 141 [Sh2-136]), 



    
        

            snakagawa
Iris and Ghost (NGC7023 and VdB 141 [Sh2-136])
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Iris and Ghost (NGC7023 and VdB 141 [Sh2-136])

Getting plate-solving status, please wait...
Iris and Ghost (NGC7023 and VdB 141 [Sh2-136]), 



    
        

            snakagawa
Iris and Ghost (NGC7023 and VdB 141 [Sh2-136])
Powered byPixInsight

Iris and Ghost (NGC7023 and VdB 141 [Sh2-136])

Technical card


Basic astrometry details

Astrometry.net job: 2133560

RA center: 21h 9' 31"

DEC center: +68° 15' 14"

Pixel scale: 2.536 arcsec/pixel

Orientation: 180.847 degrees

Field radius: 2.091 degrees


Resolution: 4945x3284

Data source: Unknown

Description

Modified Celestron 8SE (with DIY mirror locks + cooling fan) + New prototype Hyperstar (Hyperstar IV?) thanks to Dean (Starizona).

ZWO ASI071MC PRO (APS-C size chip). Aperture mask was used (F/2 was "tamed" to be F/3). T=-5 deg C. Gain 90 offset 20. Focal length is ~400 mm (maybe slightly longer).

10 min x 46
1 min x 10
10 s x 10
Baader L filter

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Iris and Ghost (NGC7023 and VdB 141 [Sh2-136]), 



    
        

            snakagawa