Observation by Graham Winstanley: Crescent and soap bubble nebula

Uploaded by

Graham Winstanley

Observer

Graham Winstanley

Observed

2026 Jun 19 - 01:00

Uploaded

2026 Jun 22 - 19:20

Objects

The Crescent Nebula (NGC6888)

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Constellation

Cygnus

Field centre

RA: 20^h13^m
Dec: +38°07'
Position angle: -30°45'

Field size

1°40' × 1°07'

Equipment

Altair Astro 115mm ED refractor
Altair Hypercam 26C
Optolong L-ultimate filter
ASI120MM guide camera
Celestron OAG

Exposure

56 x 300s

Location

Bassingham, Lincolnshire

Target name

Crescent nebula

Title

Crescent and soap bubble nebula

About this image

Captured over 2 nights 17/18 and 18/19 June. The soap bubble has evaded my imaging until now. Full marks to the Optolong L-Ultimate filter.

Files associated with this observation

NGC 6888 starry.jpg (6.2 MB)

Like this image

Callum Potter, Simon Paul Davis, Dominic Ford, Andy Wilson, Gary Poyner, Karen Smith

Comments

Simon Paul Davis, 2026 Jun 26 - 08:54 UTC

Very nice capture of soap bubble alonside the crescent

Graham Winstanley

Kwong Man, 2026 Jun 26 - 11:23 UTC

Nice, but I thought the shell of the crescent nebula was blue?

Graham Winstanley

Graham Winstanley, 2026 Jul 13 - 20:39 UTC

Regarding the green colour. I thought the same, though narrow band (even dual band) is not true colour. I tried to use ColorMask in Pixinsight to enhance the OIII and according to the blue selection there was almost no signal. The signal was strongest in green and yellow.

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