Observation by Dr Ollie Garrett: NGC 6888 The Crescent Nebula

Uploaded by

Dr Ollie Garrett

Observer

Dr Ollie Garrett

Observed

2015 Sep 18 - 21:30

Uploaded

2017 Mar 03 - 14:21

Objects

The Crescent Nebula (NGC6888)

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Constellation

Cygnus

Field centre

RA: 20^h12^m
Dec: +38°20'
Position angle: -93°36'

Field size

1°09' × 0°46'

Equipment

115mm f7 APO refractor
NEQ6 mount
SBIG STF-8300M CCD
Autoguiding: SX Lodestar and 80mm f5.25 APO (mounted side by side with imaging telescope)
Baader 36mm unmounted filters in SX USB filter wheel

Exposure

Sulphur II: 5 x 1200 & 3 x 900 secs; Hydrogen Alpha: 2 x 1800, 7 x 1200 & 5 x 900 secs; Oxygen III: 3 x 1200 & 2 x 900 secs

Location

Dartmoor, UK

Target name

The Crescent Nebula

Title

NGC 6888 The Crescent Nebula

About this image

The data for this observation were collected during the nights of 23.6.14, 24.6.14, 8.7.14, 30.7.15, 18.8.15, 1.9.15 and 18.9.15. Despite a painstaking approach to setup, I experienced numerous problems with differential flexure during these imaging sessions. The image presented here is created with the better subframes I managed to capture and, as a result, is rather limited in OIII exposure in particular. The total image integration time is 8 hours and 30 minutes.

Files associated with this observation

N6888_OGarrett.jpg (1.9 MB)

Like this image

Jeremy Shears, Dawson, Graham Winstanley, Thomas Killestein, Peter Carson, Callum Potter

Comments

Dawson, 2017 Mar 03 - 21:24 UTC

Stunning image. It will be interesting to see how much this changes over time as it continues to expand outwards.

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