British Astronomical Association
Supporting amateur astronomers since 1890

BAA Images Dean Ashton

Observation by Dean Ashton: Crescent Nebula

Uploaded by

Dean Ashton

Observer

Dean Ashton

Observed

2021 Jul 18 - 23:30

Uploaded

2021 Jul 23 - 16:42

Objects

The Crescent Nebula (NGC6888)

Planetarium overlay









Constellation

Cygnus

Field centre

RA: 20h11m
Dec: +38°20'
Position angle: -2°24'

Field size

0°47' × 0°31'

Equipment
  • Celestron 9.25 EdgeHD with 0.7x focal reducer (fl1,640mm)
  • QHY268c Camera
  • Optolong LeNhance Filter
Exposure

54x600s @ /f7

Location

St. Austell, Cornwall

Target name

NGC6888

Title

Crescent Nebula

About this image

Image captured on the nights of 17th, 18th and 19th July.  Total integration time 9-hours.

L-eNhance filter passing Ha and Oiii emission wavelengths.

Warm nights with ambient temperature averaging 20C but humidity relatively low at 60%.

Calibration, alignment, integration and processing all with PixInsight

QHY268C TEC at -15C; High Gain Mode; Gain56; Full well 30,000e

Files associated with this observation
Like this image
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.