Astrophotography - The Moon page - Home
 M42, the Orion Nebula

M42, the Orion Nebula

M42, the Great Orion Nebula is the brightest nebula. It is visible even with the unaided eye, but the vivid colors appear only in photographs.
The Orion nebula is a cloud of glowing Hydrogen ( = HII-Region ), in which new stars are formed.

© Philipp Salzgeber

Film: Kodak Multispeed / PJM-2
Telescope/Lens: Vixen 130mm (5,1") f/5,5 Newton on a Super Polaris mount
Exposure: 20 min.
Date: 16 January 1999
Unsharp Masking

Comments:Guiding was done manually using a guidescope. This image should be regarded as a test/preliminary result, because many things were sub-optimal:

  • Guiding errors
  • Manual declination corrections because of lack of declination motor
  • Film was 1 1/2 years old (stored uncooled).
  • Polar alignment was done with polar alignment scope only, no drift alignment.
  • I forgot the viewfinder magnifier and the F4 had run out of batteries, so I achieved no good focus.
  • Some light-leaks in the film can, the resulting uneven film-fog could be removed only partially.
  • Imaging with prime focus/guidescope for the first time.
  • Guidescope deliverd bad images because of misalignment of focuser and lens cell.
  • Main telescope was not collimated
To see images of my telescope look at my setup page.

All images Copyright © 1998 Philipp Salzgeber, unless otherwise noticed. All rights reserved. No form of reproduction is authorized unless accompanied by a written agreement of the Author.

Astrophotography - The Moon page - Home