Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  IC 1274  ·  IC 4684  ·  IC 4685  ·  NGC 6546  ·  NGC 6559
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IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO, 



    
        

            robonrome
IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO
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IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO

Getting plate-solving status, please wait...
IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO, 



    
        

            robonrome
IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO
Powered byPixInsight

IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO

Technical card

Imaging telescopes or lenses: APM LZOS 130/780

Imaging cameras: ZWO ASI294MM Pro

Mounts: iOptron CEM70

Guiding telescopes or lenses: APM LZOS 130/780

Guiding cameras: ASI290MM Mini ASI 290 Mini

Focal reducers: Riccardi RIRED-M63

Software: Aries Production astro pixel processor  ·  Photoshop CC  ·  StarTools 1.7

Filters: Antlia SII 3.5nm  ·  Antlia 3.5nm Ha  ·  Antlia 3.5nm OIII

Accessory: ZWO ASI OAG  ·  ZWO EAF Focuser  ·  ZWO EFW 36mm  ·  PrimaLuceLab ECCO ECCO  ·  PRIMALUCE LAB Eagle 3s


Dates:July 10, 2021

Frames: 157x300" (13h 5')

Integration: 13h 5'

Avg. Moon age: 0.43 days

Avg. Moon phase: 0.21%


Basic astrometry details

Astrometry.net job: 4727918

RA center: 18h 8' 54"

DEC center: -23° 49' 4"

Pixel scale: 1.620 arcsec/pixel

Orientation: 90.358 degrees

Field radius: 1.077 degrees


Resolution: 3912x2761

Locations: Backyard, Brisbane, Queensland, Australia

Data source: Backyard

Description

Having the Lagoon recently "in the bag" I decided to see if I could make a decent image out of it's near neighbour IC4685 here ...I see it like a backwater pond flowing off the Lagoon itself.

Taken over three nights. Starting to get some decent results with an OAG - seems to have overcome some of the elongated stars I've been getting toward zenith ... tilt is still a struggle but at least don't feel I'm losing a bunch of subs from poor guiding/flexure anymore.

Stacked in APP and separated into Ha, OIII, and SII and processed in Startools... I also combined in APP as SHO and saved as a TIF and layered that in with the Startools result in PS to taste to try and get more natural looking stars.

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IC 4685 - a backwater neighbour of the Lagoon Nebula in SHO, 



    
        

            robonrome