Cygnus

A 32 minute exposure at iso200 through a Canon 17-40/4L (17mm @ F/5.6) of Cygnus and surrouding constellations with the milky way in the background.

There is a tree at the bottom right, and some local light-pollution bottom left, otherwise I am quite happy with this first serious go at a wide-field milky way picture. A dew-heater will allow longer uninterrupted sessions, and the fine focus could be improved slightly. Perhaps I should use a higher iso setting?

Update: after some discussion it seems that the red problems in the lower left corner may be due to amplifier-noise in the camera. Stacking a number of shorter exposures, for example 6x 10 min, is a better way of achieving a long total exposure with a DSLR. Cooled CCD cameras made for astrophotography are better for very long exposures - but also cost significantly more than consumer DSLRs.

1 Comment

  1. Administrator

    September 1, 2008 at 21:10

    Jari Kankaanpää did a similar shot as a panorama of five shots at 18mm focal length with a Nikon D300:
    http://www.lakeudenursa.fi/galleria/v/jarik/deepsky/linnunrata.jpg.html?g2_imageViewsIndex=2

    the original is 10854 X 3549 pixels!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

© 2019 anderswallin.net

Theme by Anders NorénUp ↑