Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian
LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian

LDN 1251 - Humpback Anglerfish Nebula

Getting plate-solving status, please wait...
LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian
LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian

LDN 1251 - Humpback Anglerfish Nebula

Equipment

Imaging Telescopes Or Lenses
Explore Scientific ED127 FCD 100 Air-Spaced Triplet Apochromatic Refractor
Imaging Cameras
ZWO ASI1600MM-Cool
Mounts
SkyWatcher EQ6-R Pro (EQMOD)
Filters
ZWO 1.25" Lum · ZWO 1.25" Red · ZWO 1.25" Green · ZWO 1.25" Blue
Accessories
Pegasus Astro Dual Motor Focus Controller · Moonlite CFL 2.5 w/ Stepper Motor · ZWO EFW 8x1.25" Filter Wheel · Explore Scientific 0.7 Reducer/Flattener
Software
N.I.N.A. · PHD2 · PixInsight
Guiding Telescopes Or Lenses
Orion ShortTube 80
Guiding Cameras
ZWO ASI290MM Mini

Acquisition details

Dates:
June 16, 2020 ·  June 17, 2020 ·  June 18, 2020 ·  June 19, 2020
Frames:
ZWO 1.25" Blue: 50x90" (1h 15') (gain: 75.00) -20°C bin 1x1
ZWO 1.25" Green: 98x90" (2h 27') (gain: 75.00) -20°C bin 1x1
ZWO 1.25" Lum: 367x90" (9h 10' 30") (gain: 75.00) -20°C bin 1x1
ZWO 1.25" Red: 92x90" (2h 18') (gain: 75.00) -20°C bin 1x1
Integration:
15h 10' 30"
Darks:
50
Flats:
50
Flat darks:
50
Bias:
50
Avg. Moon age:
26.41 days
Avg. Moon phase:
11.56%
Bortle Dark-Sky Scale:
5.00
Temperature:
12.00

Basic astrometry details

Astrometry.net job: 3629917

RA center: 22h32m21s.6

DEC center: +75°1330

Pixel scale: 1.168 arcsec/pixel

Orientation: 358.327 degrees

Field radius: 0.898 degrees

Resolution: 4406x3348

Locations: -= αrα αd αsτrα =- observatory, Cape Elizabeth, ME, United States

Data source: Backyard

Description

Lynds Dark Nebula (LDN) 1251 is a large star forming molecular cloud located about 1,000 light-years away in the constellation Cepheus. It is one of many sites of low and intermediate mass star formation making up the region known as the Cepheus Flare. My FOV is estimated to be ~10 light-years in width.

Within the various patches of faint clouds captured here lurk some ever-interesting Herbig-Haro objects, a few of which are labelled in my annotated version, including HH 149, HH 189, and HH 189 C. A few distant galaxies are also visible around the edges of the cloud, barely visible through our dusty line-of-sight.

I really love this object. The chaotic clouds and the striking resemblance to a hellish humpback anglerfish is unsettling and beautiful at the same time.

Comments

Revisions

  • Final
    LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian
    Original
    LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian
    B

B

Description: PixInsight annotated revision.

Uploaded: ...

Sky plot

Sky plot

Histogram

LDN 1251 - Humpback Anglerfish Nebula, 



    
        

            Ara Jerahian