British Astronomical Association
Supporting amateur astronomers since 1890

BAA Images Kevin Gurney

Observation by Kevin G.: M13

Uploaded by

Kevin Gurney

Observer

Kevin G.

Observed

2016 Aug 30 - 19:08

Uploaded

2016 Dec 20 - 19:17

Objects

M13

Planetarium overlay









Constellation

Hercules

Field centre

RA: 16h41m
Dec: +36°28'
Position angle: -7°12'

Field size

0°24' × 0°19'

Equipment
  • Celestron 8SE
  • Atik 460EX mono
  • Skywatcher AZ-EQ6-GT
  • OAG with AVS MkIV video cam
  • ASA 0.77 reducer corrector
Exposure

Lum (IDAS LPS-D1) 5 x 300s; Blue 4 x 300s; Red 5 x 300s: all bin 1x1 at -12C

Location

Sheffield

Target name

M13

Title

M13

About this image

Globular clusters present different challenges than nebulae. The core mustn't be too burnt out, while there should be a halo of fainter stars. I have compromised here... In addition, imaging over multiple nights (as here) is difficult; its hard to plate solve and reacquire the precise target coordinates from the previous session (maybe I'm missing a trick?). The star colours are probably not quite right here too... Still working on a good calibration method.

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.