C/1995 O1 Hale - Bopp on April 8, 1997 with open cluster M 34 in Perseus

This images is the composition of five separate images. Four B&W images were used in order to achieve the high contrast, a single color image was used for colors adding. As the comet is moving on the star background, it was necessary to decompose the image and match separately the comet and separately the stars.

Date08. 04. 1997
Time19:04-19:07, 19:09-19:13, 19:14-19:19, 19:20-19:21 UT (B&W images)
20:07-20:13 UT (color image)
PlaceStanovisko hillside near Všechovice, Bohemian-Moravian Highlands, Czech Republic
OpticsTair 3a 4.5/300 mm (B&W images)
Pentacon 4/200 mm (color image)
CameraPraktica MTL 50
FilmIlford Delta 400 - Microphen 14 min, 20° (B&W images)
Kodak Ektar 1000 (color image)
ProcessingComposition of 5 images, separate matching of comet and stars, LRGB process
image processing Miloslav Druckmüller
ScannerNikon LS 2000
SoftwareSofo ACC 5.0 with Match II module
NoteThe image processing was improved in 2009
Copyright© 2003, 2009 Miloslav Druckmüller

Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
Page last update: 21.2.2009