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DG 181,DG 182 : Tiny forgotten reflection nebulas (Cepheus), 





    
        

            Antonio F. Sánchez
DG 181,DG 182 : Tiny forgotten reflection nebulas (Cepheus)

Technical card

Resolution: 2400x1795

Dates:Sept. 26, 2014Sept. 29, 2014Oct. 2, 2014Oct. 17, 2014

Frames:
Optec 50mm B: 33x600" -25C bin 1x1
Optec 50mm G: 30x600" -25C bin 1x1
Optec 50mm L: 75x600" -25C bin 1x1
Optec 50mm R: 31x600" -25C bin 1x1

Integration: 28.2 hours

Avg. Moon age: 9.72 days

Avg. Moon phase: 30.67%

Bortle Dark-Sky Scale: 2.00

Astrometry.net job: 397505

RA center: 334.151 degrees

DEC center: 60.819 degrees

Pixel scale: 1.415 arcsec/pixel

Orientation: 0.152 degrees

Field radius: 0.589 degrees

Description

DG 181, DG 182 (Dorschner+Gurtler catalogue) are two tiny blue reflection nebulas located between the LDN´s 1175 and 1184, into the cloud TGU640 of Cepheus constellation..Rarely imaged (or never imaged ? ) the area also contains IR objects such as IRAS 22148+6033,IRAS 22151+6040,IRAS 22158+6041 ans X-Ray objects as 1RXS J221635.3+604813 .
The whole area is inmersed into a mix of dust and reflections , making it a difficult task for astrophotographers. A lot of hours were invested in order to present it with some detail and colour.
Many thanks to Sakib Rasool for pointing these targets.

Comments

Author

afesan
Antonio F. Sánchez
License: None (All rights reserved)
2727
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DG 181,DG 182 : Tiny forgotten reflection nebulas (Cepheus), 





    
        

            Antonio F. Sánchez