Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)

Image of the day 09/26/2018

Barnard 175 - Cosmic Curiosities, 



    
        

            Jason Guenzel
Barnard 175 - Cosmic Curiosities
Powered byPixInsight

Barnard 175 - Cosmic Curiosities

Image of the day 09/26/2018

Barnard 175 - Cosmic Curiosities, 



    
        

            Jason Guenzel
Barnard 175 - Cosmic Curiosities
Powered byPixInsight

Barnard 175 - Cosmic Curiosities

Technical card

Imaging telescopes or lenses: CELESTRON EdgeHD 800

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Orion Atlas Pro AZ/EQ-G

Guiding telescopes or lenses: CELESTRON EdgeHD 800

Guiding cameras: ASI120MM

Focal reducers: Celestron 0.7x Focal Reducer

Software: Sequence Generator Pro  ·  PixInsight  ·  Adobe Photoshop  ·  PHD 2

Filters: Astronomik Deep-Sky R 1.25"  ·  Astronomik Deep-Sky B 1.25"  ·  Astronomik Deep-Sky G 1.25"  ·  Astronomik L-3 UV-IR Block 1.25"  ·  Astronomik H-alpha 6nm CCD 1.25"

Accessory: Orion Thin Off-Axis Guider (TOAG)  ·  Moonlite CHL 2.5" Large Format Crayford Edge Focuser


Dates:Aug. 23, 2018Aug. 24, 2018Aug. 31, 2018Sept. 5, 2018Sept. 11, 2018Sept. 12, 2018Sept. 13, 2018Sept. 16, 2018Sept. 17, 2018Sept. 18, 2018

Frames:
Astronomik Deep-Sky B 1.25": 30x240" (2h) (gain: 0.00) -20C bin 1x1
Astronomik Deep-Sky G 1.25": 30x240" (2h) (gain: 0.00) -20C bin 1x1
Astronomik Deep-Sky R 1.25": 30x240" (2h) (gain: 0.00) -20C bin 1x1
Astronomik H-alpha 6nm CCD 1.25": 140x240" (9h 20') (gain: 139.00) -20C bin 1x1
Astronomik L-3 UV-IR Block 1.25": 215x180" (10h 45') (gain: 0.00) -20C bin 1x1

Integration: 26h 5'

Darks: 50

Flats: 50

Bias: 256

Avg. Moon age: 10.18 days

Avg. Moon phase: 48.58%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 2263494

RA center: 22h13m49s

DEC center: +70°1727

Pixel scale: 0.527 arcsec/pixel

Orientation: 180.545 degrees

Field radius: 0.396 degrees


Resolution: 3234x4348

Data source: Backyard

Description

In the constellation of Cepheus, a long pillar of dark dust (the Bok Globule, Barnard 175) terminates in a brilliant sapphire reflection nebula (vdB 152, Cederblad 201).

This image contains other curiosities, too. The long red hydrogen alpha filaments of a supernova remnant (SNR 110.3+11.3) appear to intertwine through the background. Embedded in the dusty pillar and showing a vibrant red, a forming star with polar jets of ionized gas interacts with the interstellar medium (Herbig Haro object, HH450). The inner pocket of the reflection nebula has some interesting arcs of material lit from within and is somewhat reminiscent of the Iris Nebula. I didn't have the FOV for it, but just off the lower right of the frame is an ancient planetary nebula that emits in Ha and OIII. We are peering through a fairly busy part of the Milky Way, but amazingly there are at least a couple background galaxies visible.

I found this image to be a particular challenge on the processing side. The dark nebula is exceedingly faint in luminance and the supernova remnant was even dimmer in hydrogen alpha emission.

If you ask me, this complex nebula looks most like a baby penguin looking skyward.

Enjoy!

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