Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  HD212955  ·  HD213021  ·  HD214710  ·  HD215038  ·  LBN 558  ·  LDN 1251
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LDN 1251 - CHEPEUS CONSTELLATION - NASA APOD 24 NOVEMBER 2022 - THIRD PRIZE ON OPTOLONG CONTEST 2022, 



    
        

            Stefano Attalienti
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LDN 1251 - CHEPEUS CONSTELLATION - NASA APOD 24 NOVEMBER 2022 - THIRD PRIZE ON OPTOLONG CONTEST 2022

Getting plate-solving status, please wait...
LDN 1251 - CHEPEUS CONSTELLATION - NASA APOD 24 NOVEMBER 2022 - THIRD PRIZE ON OPTOLONG CONTEST 2022, 



    
        

            Stefano Attalienti
Powered byPixInsight

LDN 1251 - CHEPEUS CONSTELLATION - NASA APOD 24 NOVEMBER 2022 - THIRD PRIZE ON OPTOLONG CONTEST 2022

Acquisition details

Dates:
Aug. 26, 2022
Frames:
Optolong UV/IR cut 2": 33×600(5h 30′) (gain: 100.00) f/5 -5°C bin 1×1
Integration:
5h 30′
Darks:
15
Flats:
15
Flat darks:
11
Avg. Moon age:
28.74 days
Avg. Moon phase:
0.71%
Mean SQM:
21.30
Temperature:
13.00

RA center: 22h27m56s.20

DEC center: +75°1031.6

Pixel scale: 1.158 arcsec/pixel

Orientation: -10.120 degrees

Field radius: 1.183 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 6144x4056

File size: 15.5 MB

Locations: Piano Visitone, Viggianello, Basilicata, Italy

Data source: Traveller

Description

LDN 1251, is a molecular cloud that is part of the vast molecular cloud of Cepheus. About 1000 light-years away from the solar system, its clouds reach temperatures close to absolute zero, making it one of the coldest objects in the cosmos.
LDN 1251 is an east-west elongated cloud on the eastern edge of the complex; its comet shape suggests that it is interacting with the large superbubble caused by the supernova explosion. Its distance from us has been determined in various ways and the cloud has been mapped to different emission lines, such as 13CO, SiO, NH3, HCN and more. By studying the population of young stellar objects, some authors found a dozen Hα stars and a source of infrared radiation, from which emerges an optical jet, classified as HH 149. There are also two sources of thermal radio waves.

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