Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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SH-2 155 Cave Nebula in Cepheus (RGB), 



    
        

            Mike Oates
SH-2 155 Cave Nebula in Cepheus (RGB)
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SH-2 155 Cave Nebula in Cepheus (RGB)

Getting plate-solving status, please wait...
SH-2 155 Cave Nebula in Cepheus (RGB), 



    
        

            Mike Oates
SH-2 155 Cave Nebula in Cepheus (RGB)
Powered byPixInsight

SH-2 155 Cave Nebula in Cepheus (RGB)

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106 ED

Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

Mounts: Sky-Watcher EZ-EQ6 GT

Guiding telescopes or lenses: Opticstar AR80S (f5) Gold Guidescope

Guiding cameras: Starlight-XPress Lodestar Autoguider

Software: Sequence Generator Pro  ·  Photoshop CS6  ·  PIXINSIGHT 1.8

Filters: Red  ·  Green  ·  Blue

Accessory: Lakeside Astro Motor Focus System  ·  Starlight Instruments FTF3545B-A Focuser  ·  Starlight-XPress Filter Wheel


Dates:Oct. 14, 2015

Frames: 42x500" (5h 50')

Integration: 5h 50'

Avg. Moon age: 1.35 days

Avg. Moon phase: 2.04%


Basic astrometry details

Astrometry.net job: 847501

RA center: 22h 56' 9"

DEC center: +62° 22' 40"

Pixel scale: 1.436 arcsec/pixel

Orientation: 179.644 degrees

Field radius: 0.875 degrees


Resolution: 3379x2798

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

I have not been posting images for a while as I have been rather busy - building an observatory. It took rather longer than I thought it would being 11 months since I started the pier foundations. But it's worth it, now I can get imaging a lot faster and be protected from the wind as well as allowing me to stay warm while imaging.

This image, the Cave Nebula is my first light from the observatory.

I am really surprised how well this has turned out as I live in light polluted Manchester, UK and I have only used R, G & B filters. I was also going to take Ha subs, but I don't think I need to. The average SQM reading was 18.7.

The actual sub exposures over 3 nights were:

Red 6x300s bin 2x2 + 9x600s bin 1x1

Green 5x300s bin 2x2 + 10x600s bin 1x1

Blue 3x300s bin 2x2 + 9x600s bin 1x1

The updated version is the same image with a different border which is now the format I intend to keep.

Comments

Revisions

  • SH-2 155 Cave Nebula in Cepheus (RGB), 



    
        

            Mike Oates
    Original
  • Final
    SH-2 155 Cave Nebula in Cepheus (RGB), 



    
        

            Mike Oates
    B

Sky plot

Sky plot

Histogram

SH-2 155 Cave Nebula in Cepheus (RGB), 



    
        

            Mike Oates