Observation by Simon Paul Davis: Crescent Nebula Wide HOO

Uploaded by

Simon Paul Davis

Observer

Simon Paul Davis

Observed

2026 Jun 23 - 23:00

Uploaded

2026 Jul 10 - 10:13

Objects

The Crescent Nebula (NGC6888)

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Constellation

Cygnus

Field centre

RA: 20^h12^m
Dec: +38°20'
Position angle: +156°41'

Field size

2°19' × 1°47'

Equipment

Sharpstar HNT15028 150mm Newtonian
ASI1600MM Pro (-10 C)
OAG with ASI2900MM
Ha, Sii and Oiii 4nm filters

Exposure

40 x 120 Seconds Ha, 40 x 240 Seconds Oiii

Location

Hampshire

Target name

Crescent Nebula

Title

Crescent Nebula Wide HOO

About this image

4 hours overnight capture of the crescent nebula in its widefield context. I have been disappointed in the past with how little Oiii I get in the composition so doubled the time per subframe (4 minutes cf 2 minutes for Ha). I think that the seeing was particularly good for this HOO narrowband image.

Files associated with this observation

Cres_final.jpg (2.0 MB)

Like this image

Mr Ian David Sharp, Dominic Ford, Callum Potter

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