Orion Nebula - M42

AndyMc — Thu, 20 Mar 2025 14:53:04 GMT

Unfortunately, I have pretty terrible visibility to the east, so my window of observation is pretty narrow on targets like M42. I can get maybe 3 hours a night between the time a target clears a building and then disappears behind some trees on its way to the horizon. As a result, this is the first time I've put any time into the Orion Nebula.

This image consists of Ha, Oiii, and Sii data for the nebula and broadband stars.

This was also the first test of the EF 500mm f/4L IS USM w/ my refined EAF mount.

Orion Nebula

Capture Details:

Location:

Chesapeake, VA, USA

Bortle:

Bortle 8

Dates:

March 2, 2025
March 3, 2025
March 8, 2025
March 11, 2025
March 18, 2025

Shooting Data:

Askar Colour Magic C2 Duo-band Filter (SII+OIII) 2": 131×100″(3h 38′ 20″) ISO1000 f/4
Optolong UV/IR cut 2": 214×15″(53′ 30″) ISO1000 f/5.6
SVBony SV220 7nm 2": 85×100″(2h 21′ 40″) ISO1000 f/4
SVBony SV220 7nm 2": 72×120″(2h 24′) ISO1000 f/4

Equipment:

EOS Ra Body
EF 500mm f/4L IS USM Lens
Celestron AVX Mount
SVBONY SV106 Guide Scope
ZWO ASI120MM Mini Guide Camera
ZWO EAF
ZWO ASIAir Pro
SVBony SV220 Dual Narrowband Ha/OIII Filter
Askar Colour Magic C2 Duo-band Sii/Oiii Filter
Optolong UV/IR cut Filter

Software:

Siril
StarNet++
GraXpert
Adobe Photoshop

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Orion Nebula - M42