Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4628
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Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer, 



    
        

            robonrome
Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer
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Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer

Getting plate-solving status, please wait...
Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer, 



    
        

            robonrome
Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer
Powered byPixInsight

Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer

Acquisition details

Dates:
May 31, 2021
Frames:
144×300(12h)
Integration:
12h
Avg. Moon age:
20.36 days
Avg. Moon phase:
68.61%

Basic astrometry details

Astrometry.net job: 4574828

RA center: 16h57m38s.4

DEC center: -40°3039

Pixel scale: 1.615 arcsec/pixel

Orientation: 183.051 degrees

Field radius: 1.074 degrees

Resolution: 2782x3895

File size: 7.0 MB

Locations: Backyard, Brisbane, Queensland, Australia

Data source: Backyard

Description

I do like the prawn nebula. Maybe not quite the same detail and Lobster or Running Chicken, but plenty of interest and a lot of fainter background nebulosity that frames the brighter portions.

I imaged this earlier in the year, but with a straight flatenner which at 780mm FL on my APM stretched my guiding a tad.

So I've revisited over a couple of nights using the riccardi 0.75x reducer giving me 585mm and faster F4.5, so with the 12 hours here should be effectively gathering a lot more "light" than previous 11hour integration at F6.

Also decided to do this one in portrait orientation for a bit more differentiation than simply a wider field shot of previous image.

Stacked into separate Ha, OIII, and SII channels in APP and recombined as SHO in Startools 1.7.

Comments

Sky plot

Sky plot

Histogram

Prawn revisited - IC 4628 in SHO APM130 with 0.75x reducer, 



    
        

            robonrome

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Southern Hemisphere Astro