California Nebula: A huge hydrogen cloud in the constellation of Perseus visible only as a brighter shade in very clear and dark nights. It seems to resemble the state of California. Some very bright stars, predominantly the one in the lower part of the image make the dense dust and hydrogen clouds shine in the emission line of hydrogen H-alpha.

The gray-tone image has been captured using this emission line with an exposure of nearly 4 hours.

Object California Nebula
Category H-alpha Images
Designation NGC 1499
Constellation Perseus
Optics TMB 80 f/6 x 0.8 Tele Vue Reducer/Flattener
Mount Takahashi EM-11
Camera QHY8/ALccd 6c
Exposure 23 x 10min Astronomik H-alpha filter, Maxim DL for image acquisition
Calibration Flat frame
Guiding Meade DSI Pro II and Vixen R200SS as Guide Scope, Guiding Software: Maxim DL
Processing ImagesPlus, Photoshop
Location-Date Eningen, Germany - 24 Oct 2008
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