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Contains:  IC 4628
Getting plate-solving status, please wait...

Prawn nebula, in Hubble palette

Technical card

Imaging telescope or lens:SkyWatcher 200P

Imaging camera:ZWO ASI1600MM-COOL Pro

Mount:Sky-Watcher EQ6R-Pro

Guiding telescope or lens:ZWO OAG

Guiding camera:ZWO ASI183MM

Filters:ZWO OIII 1.25" 7nmZWO SII 1.25" 7 nmZWO Ha 1.25" 7nm

Resolution: 4656x3520

Dates:April 8, 2019

ZWO Ha 1.25" 7nm: 120x180" (gain: 138.96) -20C
ZWO OIII 1.25" 7nm: 50x180" (gain: 139.00) -20C bin 1x1
ZWO SII 1.25" 7 nm: 50x180" (gain: 139.00) -23C bin 1x1

Integration: 11.0 hours

Darks: ~29

Flats: ~40

Bias: ~96

Avg. Moon age: 3.00 days

Avg. Moon phase: 9.85%

Bortle Dark-Sky Scale: 9.00 job: 2635532

RA center: 254.312 degrees

DEC center: -40.409 degrees

Pixel scale: 0.850 arcsec/pixel

Orientation: 61.716 degrees

Field radius: 0.689 degrees

Data source: Backyard


These past nights in BsAs were dreamed for astrophotography : no wind, no moon and no clouds. For the last 3 nights I imaged the Prawn Nebula, IC4628, my main obstacle was my guiding which unfortunatley got worse night by night, but in the end I managed to capture some good data and I'm very pleased with the results.
Here's to celebrate our first image of a Black Hole
clear skies everyone!



Diego Gravinese
License: None (All rights reserved)



Enhanced contrast and definition.

Sky plot

Sky plot


Prawn nebula, in Hubble palette, 


            Diego Gravinese