Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7419  ·  NGC7419  ·  PK110+01.1  ·  Sh2-154  ·  Sh2-155  ·  VdB155
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Cave Nebula Wide Field (Sh2-155, Sh2-154, VdB155, NGC 7419), 



    
        

            Gary Lopez
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Cave Nebula Wide Field (Sh2-155, Sh2-154, VdB155, NGC 7419)

Imaging telescopes or lenses: William Optics GT71 71mm f/5.9 Apo Refractor

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

Guiding cameras: ZWO ASI1600MM Cooled PRO

Focal reducers: William Optics 0.8X Field Flattener

Software: Adobe Lightroom CC  ·  Photoshop CC  ·  Main Sequence Software Sequence Generator Pro, v3.0  ·  Pleaides PixInsight Core 1.8

Filters: Astrodon R Gen 2 E-series 31mm  ·  Astrodon G Gen 2 E-series 31mm  ·  Astrodon B Gen 2 E-series 31mm  ·  Astrodon OIII 3nm-31mm  ·  Astrodon SII 3nm-31mm  ·  Astrodon Ha 3nm-31mm


Dates:Oct. 15, 2020Oct. 16, 2020Oct. 17, 2020Oct. 21, 2020

Frames:
Astrodon B Gen 2 E-series 31mm: 30x60" (gain: 139.00) -15C bin 1x1
Astrodon G Gen 2 E-series 31mm: 30x60" (gain: 139.00) -15C bin 1x1
Astrodon Ha 3nm-31mm: 233x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 110x180" (gain: 139.00) -15C bin 1x1
Astrodon R Gen 2 E-series 31mm: 30x60" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 87x180" (gain: 139.00) -15C bin 1x1

Integration: 23.0 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 15.80 days

Avg. Moon phase: 8.00%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 4167507

RA center: 22h 54' 24"

DEC center: +61° 54' 1"

Pixel scale: 2.298 arcsec/pixel

Orientation: -96.163 degrees

Field radius: 1.866 degrees


Resolution: 4656x3520

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard

Description

These are data that I previous processed as a SHO rendition with traditional Hubble color assignment. The data were so good (23 hours with HFR ranging from 1.5-1.9) I decided to also process them using narrowband natural color approach that I have devised. I posted a description of the approach and the Pixel Math formula on AB in December 2020, https://www.astrobin.com/0th11x/?nc=user. For this object, I prefer this “natural” color rendition over the SHO Hubble palette version (posted here as Version B).

Comments

Revisions

  • Final
    Cave Nebula Wide Field (Sh2-155, Sh2-154, VdB155, NGC 7419), 



    
        

            Gary Lopez
    Original
  • Cave Nebula Wide Field (Sh2-155, Sh2-154, VdB155, NGC 7419), 



    
        

            Gary Lopez
    B

B

Description: SHO rendition

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Cave Nebula Wide Field (Sh2-155, Sh2-154, VdB155, NGC 7419), 



    
        

            Gary Lopez