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Tuesday, March 10, 2020

Great Mosaic of Cepheus

At 2014 I published a large mosaic image out of Constellation Cepheus. I have now shot new photos from the area and I was able to update my original panoramic photo mosaic.
This is the second updated mosaic image in a week, first one was the Grande Mosaic of Auriga, it can be seen here,

I have now somehow better tools but also my skills has been improved. I have also reprocessed the original photo for better colors and details.

Original mosaic had 10 panels, since my current imaging system has much large image sensor, I was able to cover several panels with just two photos. The mosaic photo has resolution of 13.000 x 7000 pixels and it has twelve panels.
Originally I used The Canon EF 200mm f1.8 camera lens and QHY9 astronomical camera with Baader narrowband filter set. new material is shot with Tokina AT-x 300mm f2.8 camera lens and Apogee Alta U16 astronomical camera with Astrodon 50mm square narrowband filter set.
The total exposure time before current additions was around 92h. With new photos, the exposure time is now over 160h. (Most time is spend for the planetary nebula OU4 at upper right corner. 48 hours.)

Panoramic Photo of Cepheus
Click for a large image, it's worth it! (2400 x 1300 pixels)

Mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Large image 2400 pixels wide and ~4MB. Original resolution was about 13000 x 7000 pixels.

A detalji from a full size image
Click to see a large image

Dense starfield from about center of the full size photo.

Labeled image

Some main objects are labeled here

Photos used to upgrade the mosaic

Sharpless 132

IC 1396

From the bubble to Cave Nebula


Sharpless 157 (Sh2-157)


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