Observation by Mr Kevin Gurney: Cocoon nebula

Uploaded by

Kevin Gurney

Observer

Mr Kevin Gurney

Observed

2023 Jul 17 - 23:58

Uploaded

2023 Aug 07 - 16:17

Objects

The Cocoon Nebula (IC5146)

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Constellation

Cygnus

Field centre

RA: 21^h53^m
Dec: +47°15'
Position angle: +178°29'

Field size

0°21' × 0°15'

Equipment

Celestron C11 Edge HD
ZWO ASI 1600MM pro
Fornax 102 mount
Atik EFW
LodestarX2 guide camera
Baader LRGB Filters

Exposure

Total 3hrs 45min. 300s subs, bin 1x1, gain 0.

Location

Charente, France

Target name

Cocoon nebula

Title

Cocoon nebula

About this image

I have an 'early' cocoon taken in 2016, but things have moved on (techniques and know-how) so it was worth a revist. Thus, this one is properly colour calibrated with the spectrophotometric color calibration tool in Pixinsight. This uses a GAIA database of spectra, together with a description of your 'instrument response' (Filters, and camera quantum efficiency as a function of wavelength) to calibrate using stars in this database found in your image. I have also used the new AI tools in PI (Blur Exterminator, Noise Exterminator).

Files associated with this observation

proc2_1_BAA.jpg (1.2 MB)

Like this image

David Strange, Callum Potter, Simon Paul Davis

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