Milky Way, 12 years, 1250 hours of exposures and 125 x 22 degrees of sky

Last modified on March 17, 2021

Milky Methodology, 12 years, 1250 hours of exposures and 125 x 22 degrees of sky

 It took nearly twelve years to amass ample information for this excessive decision gigapixel class mosaic picture of the Milky Methodology.  Complete publicity time frail is spherical 1250 hours between 2009 and 2021.

The closing characterize is ready 100 000 pixels huge, it has 234 specific individual mosaic panels stitched collectively and 1,7 gigapixels. (Click on for an infinite picture) Your complete frames frail are marked on this picture. Since fairly so loads of sub-photos and mosaics are sincere artworks it leads to a extraordinarily advanced mosaic construction. 

" I can hear tune on this composition, from excessive sparcs and bubbles at left to a deep and big sounds at appropriate."

From Taurus to Cygnus

Click on for an infinite picture, or not it is really worth it! (7000 x 1300 pixels)

Image in mapped colours from the sunshine emitted by an ionized points, hydrogen=inexperienced, sulfur=pink and oxygen=blue. NOTE, the lifeless measurement of the Moon in a lower left nook. NOTE 2, there are two 1:1 scale enlargements from the fleshy measurement favourite at each ends of the picture

Taurus facet of the mosaic, https://astroanarchy.blogspot.com/2021/02/a-new-mosaic-image-from-taurus-to.html

A closeup from big panorama to show the overall decision

Click on for an infinite picture

The California Nebula, NGC 1499, might perchance seemingly properly moreover merely be thought-about at backside left of the massive mosaic picture.
There are about 20 million specific individual stars thought-about to your complete mosaic picture.

Orientation and primary points
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Imaging informationImage spans 125 x 22 degrees of  the Milky About 20 million specific individual stars are thought-about in my characterize!

It took practically twelve years to finalize this mosaic picture. The motive inside the once more of a in level of truth very long time interval is of course the size of the mosaic and the true truth, that picture is extremely deep. One different motive is that I really grasp soht most of the mosaic frames as an individual compositions and submit them as sincere artworks. That leads to a type of advanced picture scenario witch is partly overlapping with a an complete bunch unimaged areas between and spherical frames. I really grasp shot the missing information now and then all within the course of the years and closing yr I flip into able to submit many sub mosaic pictures as I obtained them ready first.

My processing workflow is extremely mounted so very minute tweaking flip into wished between the mosaic frames. Complete publicity time is over 1250 hours. About a of the frames has extra publicity time, than others. There are some extraordinarily murky objects clearly thought-about on this composition, take pleasure in a extraordinarily murky supernova remnant W63, the Cygnus Shell. It lays about six degrees up from North The United States nebula and it's going to moreover merely be thought-about as a pale blue ring. I spent about 100 hours for this SNR by myself. An different big and faint supernova remnant in Cygnus might perchance seemingly properly moreover merely be thought-about at conclude to appropriate fringe of the picture. G65.5+5.7 is as big as extra notorious Veil nebula. There are over 60 publicity hours for this SNR by myself.  (Veil SNR is factual out of doorways of the mosaic area for compositional causes however might perchance seemingly properly moreover merely be thought-about in "Detail" picture above.) 

The Mosaic Work, technical information

I really grasp frail a number of optical configurations for this mosaic picture all within the course of the years. As loads as 2014 I flip into utilizing an used Meade LX200 GPS 12" scope, QHY9 astrocam, Canon EF 200mm f1.eight digicam optics and baader narrowband filter scenario. After 2014 I really grasp had 10-micron 1000 equatorial mount, Apogee Alta U16 astro digicam, Tokina AT-x 200mm f2.eight digicam lens and the Astrodon 50mm sq. narrowband filter scenario. I really grasp shot many primary points with an extended focal measurement, earlier than 2014 by means of the use of Meade 12" scope with reducer and after 2014 Celestron EDGE 11" and reducer. Quider digicam has been Lodestar and Lodestar II.

I took my most modern toolset as a sinful instrument because it has a reasonably excessive decision blended to a extraordinarily big subject of leer. Also it collects photons in a transient time since or not it is undersampled and I can grasp very murky background nebulosity thought-about in very brief time (time and over once more 30 min physique is ample)

I kill all my mosaic work beneath the PhotoShop, Matching the separate panels by means of the use of stars as a trademark is type of uncomplicated work. My processing has grow to be so mounted, that very minute tweaking is wished between separate frames, factual some minor levels, curves and coloration steadiness. 

I really grasp frail an complete bunch longer focal measurement sub-frames in my mosaic to boost primary points. (Search the mosaic map at prime of the web page) To evaluate them with shorter focal measurement photographs I developed a brand new intention.

On the start I upscale the brief focal measurement frames about 25% to understand extra room for prime decision pictures.Then I match the excessive res characterize to a mosaic by means of the use of the celebs as a trademark. After that I care on your complete tiny stars from the excessive res picture. Next I separate stars from low res characterize and merge the starless excessive res information to a starless low res physique. And ultimately I area the eliminated low res stars once more at prime of the whole lot with zero information misplaced. Continuously there are some optical distortions and or not it is thought-about severely in a big title subject. Now all my stars are coming from a similar optical setup and I need to not grasp any problems with distortions. (I'm utilizing the identical monumental title taking away methodology as in my Tone Mapping Workflow)

Closeups from big panorama to show the overall decision
Click on for an infinite picture

Image in mapped colours from the sunshine emitted by an ionized points, hydrogen=inexperienced, sulfur=pink and oxygen=blue. 

A 1:three decision conclude up from the characterize above
Click on for an infinite picture,

A closeup from the predominant picture reveals the Sharpless 124 at up and the Cocoon nebula with a dejected gasoline hump at backside.

Sharpless 205, NGC 1491 and  Lynds Shining Nebula 696

IC 1396

From Bubble to Cave Nebula

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