Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Checkmark Nebula  ·  IC 4706  ·  IC 4707  ·  LBN 60  ·  Lobster Nebula  ·  M 17  ·  NGC 6618  ·  Sh2-45  ·  Swan Nebula  ·  omega Nebula
Getting plate-solving status, please wait...
M17 HaO3, 



    
        

            John
Powered byPixInsight

M17 HaO3

Getting plate-solving status, please wait...
M17 HaO3, 



    
        

            John
Powered byPixInsight

M17 HaO3

Acquisition details

Dates:
Sept. 13, 2020 ·  Sept. 17, 2020 ·  Sept. 18, 2020 ·  Sept. 19, 2020
Frames:
Baader Ha 3.5 nm: 25×180(1h 15′) bin 1×1
Baader Ha 3.5 nm: 16×180(48′) (gain: 139.00) -20°C bin 1×1
Baader OIII 8.5 nm 1.25": 37×180(1h 51′) bin 1×1
Baader OIII 8.5 nm 1.25": 17×180(51′) (gain: 139.00) -20°C bin 1×1
Integration:
4h 45′
Darks:
50
Avg. Moon age:
7.20 days
Avg. Moon phase:
6.95%
Bortle Dark-Sky Scale:
4.00

RA center: 18h20m55s.756

DEC center: -16°1313.10

Pixel scale: 0.656 arcsec/pixel

Orientation: -174.179 degrees

Field radius: 0.528 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 4656x3460

File size: 17.2 MB

Locations: Home base Full Observatory, Assen, Drenthe, Netherlands

Data source: Backyard

Description

Did some testing with a achromate refractor,the bresser 127/1200,just for narrowband.

Got some good results with the Asi1600mm,even without a flattner.

But maybe i will do a starless version too,see how it goes.

greetings John.

Comments

Sky plot

Sky plot

Histogram

M17 HaO3, 



    
        

            John