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Contains:  B168, Cocoon Nebula, Cocoon nebula, IC 5146, IC5146, Sh2-125, VdB147
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The Cocoon Nebula through L-eNhance

Imaging telescopes or lenses: Celestron C9.25 Edge HD

Imaging cameras: ZWO ASI071MC

Mounts: Losmandy G-11 Gemini 2

Guiding telescopes or lenses: Orion CT-80

Guiding cameras: Starlight Xpress Loadestar X2

Focal reducers: Celestron .7x Focal Reducer, for 9.25 edgeHD .7x Focal Reducer, for 9.25 edgeHD

Software: Pleiades Astrophoto PinInsight 1.8.8-5  ·  Sequence Generator Pro  ·  PHD2

Filters: Optolong 2" L-eNhance Dualband

Accessory: ZWO M42 Filter Drawer  ·  Dew-Not 10" Dew Heater Strip  ·  Moonlite CHL 2.5" Large Format Crayford Edge Focuser  ·  Dew-Not 4" Heater Strip

Dates:July 13, 2020

Frames:Optolong 2" L-eNhance Dualband: 226x180" (gain: 125.00) -10C bin 1x1

Integration: 11.3 hours

Darks: ~60

Flats: ~60

Flat darks: ~60

Bias: ~100

Avg. Moon age: 22.61 days

Avg. Moon phase: 45.12%

Bortle Dark-Sky Scale: 7.00

Mean FWHM: 2.30

Temperature: 30.00 job: 3683501

RA center: 21h 53' 33"

DEC center: +47° 16' 15"

Pixel scale: 0.597 arcsec/pixel

Orientation: -18.257 degrees

Field radius: 0.470 degrees

Resolution: 4744x3104

Locations: SkyShed roll-off, Upper Providence, PA, United States

Data source: Backyard


The Cocoon Nebula

Again the L-eNhance proved its worth through suburban skies. Each subframe was incredibly weak and showed virtually no nebulosity at all. Fortunately after stacking and processing, more than sufficient data was present to achieve the desired object. This dual band filter does cut back on the small amount of light collected, so increasing the gain from the ASI071MC's standard of 90 to 125 was found to be of value.



License: None (All rights reserved)

Sky plot

Sky plot


The Cocoon Nebula through L-eNhance,