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Thursday, January 21, 2021

Mosaic image gets large, 400 hours and 41 panels

Nine years and over 350 hours of exposures, 41 panels and 31 high resolution sub-panels stitched together seamlessly. This mosaic image spans about 45 x 18 degrees of sky, the original resolution is 14.000 x 41.000 pixels.

Previous version of this mosaic image can be seen here,

From cassiopeia to Cepheus
Click for a full size image, it's really worth it! (3700 x 1400 pixels)

Image is in mapped colors from a light from the ionized elements, hydrogen = green, sulfur = red and oxygen = blue. NOTE, there is an image of the Moon at the same scale in lower left corner.
The heart and Soul nebulae are at upper left corner and the IC 1396 with the Elephant's Trunk Nebula at center right. There are many well known objects in this massive mosaic image including the Bubble and Cave Nebulae at just a little right from the center. 
There are about six million stars in this composition.

Click for a full size image

Evolution of the mosaic image shot between 2012 - 2021
Click for a full size image


I have used several optical configurations for this mosaic image during the years. Up to 2014 I was using an old Meade LX200 GPS 12" scope, QHY9 astrocam, Canon EF 200mm f1.8 camera optics and baader narrowband filter set. After 2014 I have had 10-micron 1000 equatorial mount, Apogee Alta U16 astro camera, Tokina AT-x 200mm f2.8 camera lens and the Astrodon 50mm square narrowband filter set. I have shot many details with a longer focal length, before 2014 by using Meade 12" scope with reducer and after 2014 Celestron EDGE 11" and reducer. Quider camera has been Lodestar and Lodestar II.

Some reduced size details from the full size mosaic image

Sharpless 132

IC 1396

Supernova remnant CTB1

Sharpless 124

From Bubble to Cave Nebula