British Astronomical Association

Supporting amateur astronomers since 1890


Gallery

Observers

Objects

Sky map

Histogram

FAQs

Search

Observation by Graeme Coates: Sh2-73 (LBN105/106) and Faint Distant Fr...

Uploaded by

Graeme Coates

Observer

Graeme Coates

Observed

2021 Apr 01 - 00:00

Uploaded

2021 May 25 - 09:53

Objects

Sharpless 73

Planetarium overlay









Constellation

Hercules

Field centre

RA: 16h11m
Dec: +21°46'
Position angle: -4°57'

Field size

1°51' × 2°28'

Equipment
  • Skywatcher Esprit 80ED
  • MI250
  • STF8300M
  • Baader Filters
Exposure

29h10m (L:R:G:B 12h10m:5h40m:6h40m:5h50m)

Location

EEYE

Target name

Sh2-73

Title

Sh2-73 (LBN105/106) and Faint Distant Friends

About this image

Mistakenly catalogued as an HII region, and included in the Sharpless catalogue, this area of dust in Hercules is in fact an example of an integrated flux nebula - shining only through combined light of stars in our own galaxy reflected back to us. Also catalogued as LBN 105/106, MBM 40 and IREC 53.

There are lots of faint, small background galaxies and galaxy groups and clusters in the image - the annotated revision highlights some of these from the PGC/LEDA catalogue.

The data channel amounts look a little odd as quite a lot of frames were affected by high thin cloud!

Image Capture: P Tribe, G Coates (April/May 2021)
Processing: G Coates

Files associated with this observation
Like this image
Comments
Graeme Coates
Graeme Coates, 2021 May 25 - 12:41 UTC
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.

© British Astronomical Association 2024

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.

The BAA image gallery was designed and
built by Dominic Ford.

Image gallery software © Dominic Ford 2020–2024