All the material on this website is copyrighted to J-P Metsavainio, if not otherwise stated. Any content on this website may not be reproduced without the author’s permission.

Have a visit in my portfolio

Sunday, December 27, 2020

From Cassiopeia to Cepheus, eight years and 300 hours of exposures

I started this imaging project back at 2012.  During the years I have shot more frames for this active region of the sky. Now there are 26 panels and 22 high resolution sub-panels stitched together. Photo covers about 35 x 17 degrees of sky and the physical resolution is over 25.000 x 12.000 pixels.  There are about 4,5 million individual stars visible in this image.

This is my second large mosaic image finalized in this month, a very large mosaic image of Cygnus can be seen here,

From Cassiopeia to Cepheus
Click for a large image, it's really worth it! (2000 x 4000 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.

A horizontal version
Click for a large image, it's really worth it! (1500 x 3000 pixels)

Orientation and size
Click for a large image

Upper one in the map is a new mosaic image, lower is another large new mosaic image about Cygnus.
Info about the Cygnus mosaic can be seen here,

Closeups from the large mosaic
You should click the images to see them in full glory, it's worth the effort!

Supernova remnant CTB1

From Bubble to Cave Nebula

IC 1396

Sharpless 132

Zoom out series
This zoom out series gives a good view to the resolution. (Photo is 6500 pixel long)


Evolution of the mosaic between 2012 and 2020
Click for a large image

There are 26 base panels with shorter focal length tools (200mm f2.8 Tokina and 200mm f1.8 Canon) There is also 22 sub-panels used, they are shot with my old 12" Meade and 11" Celestron Edge scopes.


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.


Cosmorer said...

This is so beautiful!!��♥️

Unknown said...

Awesome work

Smarty said...

Really incredible work!